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| 1. general description the PCA8543 is a peripheral device which interf aces to almost any liquid crystal display (lcd) 1 with low multiplex rates. it generates the drive signals for any static or multiplexed lcd containing up to four backplanes, 60 segments, and up to 240 elements. the PCA8543 is compatible with most microcont rollers and communicates via the two-line bidirectional i 2 c-bus. communication overheads are mi nimized using a display ram with auto-incremented addressing and display me mory switching. the PCA8543 features an internal charge pump with internal capacitors for on-chip generation of the lcd driving voltages. for a selection of nxp lcd segment drivers, see table 40 on page 59 . 2. features and benefits ? aec q100 grade 2 compliant for automotive applications ? low power consumption ? extended operating temperature range from ? 40 ? c to +105 ? c ? 60 segments and 4 backplanes allowing to drive: ? up to 30 7-segment alphanumeric characters ? up to 15 14-segment alphanumeric characters ? any graphics of up to 240 elements ? selectable backplane drive configuration: static, 2, or 4 backplane multiplexing ? programmable internal charge pump for on-chip lcd voltage generation up to 3 ? v dd2 ? 400 khz i 2 c-bus interface ? selectable linear temperature compensation of v lcd ? selectable display bias configuration ? wide range for digital and analog power supply: from 2.5 v to 5.5 v ? wide lcd supply range: from 2.5 v for lo w threshold lcds and up to 9.0 v for high threshold (automobile) twisted nematic lcds ? on-chip ram for display data storage arranged in two banks ? display memory bank switching ? programmable frame frequency in steps of 10 hz in the range of 60 hz to 300 hz; factory calibrated with a tolerance of ? 15 % covering the whole temperature and voltage range ? selectable inversion scheme for lcd driving waveforms: frame or line inversion PCA8543 4 x 60 automotive lcd segment driv er with integrated charge pump rev. 1 ? 21 january 2014 product data sheet 1. the definition of the abbreviations and acr onyms used in this data sheet can be found in section 19 on page 62 . free datasheet http://www.0pdf.com
PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 2 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump ? integrated temperature sensor with temperature readout ? on chip calibration of intern al oscillator frequency and v lcd 3. applications ? instrument cluster ? car radio ? climate control units 4. ordering information 4.1 ordering options 5. marking table 1. ordering information type number package name description version PCA8543ahl lqfp80 plastic low prof ile quad flat package; 80 leads; body 12 ? 12 ? 1.4 mm sot315-1 table 2. ordering options product type number sales item (12nc) orderable part number ic revision delivery form PCA8543ahl/a 935303762518 PCA8543ahl/ay 1 tape and reel, 13 inch, dry pack table 3. marking codes type number marking code PCA8543ahl PCA8543ahl free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 3 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 6. block diagram (1) the charge pump can generate a maximum output voltage of 3 ? v dd2 . fig 1. block diagram of PCA8543 d d d / & ' 9 2 / 7 $ * ( 6 ( / ( & 7 2 5 & / 2 & . 6 ( / ( & 7 $ 1 ' 7 , 0 , 1 * 2 6 & , / / $ 7 2 5 3 2 : ( 5 2 1 5 ( 6 ( 7 & / . 6 & / 6 ' $ $ % $ & . 3 / $ 1 ( 2 8 7 3 8 7 6 ' , 6 3 / $ < & 2 1 7 5 2 / % 3 w r % 3 ' , 6 3 / $ < 6 ( * 0 ( 1 7 2 8 7 3 8 7 6 ' , 6 3 / $ < 5 ( * , 6 7 ( 5 2 8 7 3 8 7 % $ 1 . 6 ( / ( & 7 6 w r 6 3 & $ / & ' % , $ 6 * ( 1 ( 5 $ 7 2 5 9 6 6 9 / & ' & 2 0 0 $ 1 ' ' ( & 2 ' ( 5 : 5 , 7 ( ' $ 7 $ & 2 1 7 5 2 / $ 9 ' ' 9 ' ' & + $ 5 * ( 3 8 0 3 9 2 / 7 $ * ( 0 8 / 7 , 3 / , ( 5 7 7 7 ( 0 3 ( 5 $ 7 8 5 ( 6 ( 1 6 2 5 7 , & % 8 6 & 2 1 7 5 2 / / ( 5 ' $ 7 $ 3 2 , 1 7 ( 5 $ 8 7 2 , 1 & 5 ( 0 ( 1 7 ' , 6 3 / $ < 5 $ 0 free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 4 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 7. pinning information 7.1 pinning top view. for mechanical details, see figure 49 on page 55 . fig 2. pin configuration for lqfp80 (PCA8543ahl) 3 & $ $ + / 6 6 ' $ 6 6 & / 6 $ 6 $ 6 & / . 6 7 6 7 6 7 6 9 6 6 6 9 ' ' 6 9 ' ' 6 9 / & ' 6 q f 6 q f 6 q f 6 q f 6 % 3 6 % 3 6 % 3 6 % 3 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 d d d free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 5 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 7.2 pin description [1] when the internal v lcd generation is used, this pin drives the v lcd voltage. in this case pin v lcd is an output. when the external supply is requested, then pin v lcd is an input and v lcd can be supplied to it. in this case, the internal charge pump must be disabled (see table 9 on page 8 ). table 4. pin description input or input/output pins must always be at a defined level (v ss or v dd ) unless otherwise specified. symbol pin type description s0 to s59 61 to 80 and 1 to 40 output lcd segment bp0 to bp3 41 to 44 output lcd backplane n.c. 45 to 48 - not connected; do not connect and do not use as feed through v lcd 49 supply/output [1] lcd supply voltage v dd2 50 supply supply voltage 2 (charge pump) v dd1 51 supply supply voltage 1 (analog and digital) v ss 52 supply ground supply voltage t1 to t3 53 to 55 input test pins; must be tied to v ss in applications clk 56 input/output internal oscillator output, external oscillator input a0, a1 57, 58 input i 2 c-bus slave address selection bit scl 59 input i 2 c-bus serial clock sda 60 input/output i 2 c-bus serial data free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 6 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 8. functional description the PCA8543 is a versatile peripheral device designed to interface any microcontroller to a wide variety of lcds. it can directly drive any static or multiplexed lcd containing up to 240 elements. 8.1 commands of PCA8543 the PCA8543 is controlled by the commands defined in table 5 . any other combinations of operation code bits that are not mentioned in this document may lead to undesired operation modes of the PCA8543. table 5. commands of PCA8543 command name bits reference 7 6 5 4 3 2 1 0 initialize section 8.1.1 initialize-msb00111010 initialize-lsb00000100 otp-refresh 11010000 section 8.1.2 oscillator-ctrl 110011coeosc section 8.1.3 charge-pump-ctrl110000cpe cpc section 8.1.4 temp-msr-ctrl 110010tce tme section 8.1.5 temp-comp-sla00011sla[2:0] ta b l e 3 0 temp-comp-slb00100slb[2:0] temp-comp-slc00101slc[2:0] temp-comp-sld00110sld[2:0] set-vpr-msb 0100vpr[7:4] section 8.1.6 set-vpr-lsb 0101vpr[3:0] display-enable 0011100e section 8.1.7 set-mux-mode00000m[2:0] section 8.1.8 set-bias-mode 110001b[1:0] section 8.1.9 load-data-pointer 1 0 p[5:0] section 8.1.10 frame-frequency011f[4:0] section 8.1.11 input-bank-select00001ib00 section 8.1.12.1 output-bank-select 00010ob00 write-ram-data b[7:0] section 8.1.13 temp-read td[7:0] section 8.1.14 , section 8.4.7 invmode_cpf_ctrl110101lf cpf section 8.1.15 temp-filter 1101001tfe section 8.1.16 free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 7 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 8.1.1 command: initialize this command generates a chip-wide reset. it consists of two bytes which have both to be sent to the device. it must be sent to the PCA8543 after power-on. after this command is sent, it is possible to send additional commands without the need to re-initialize the interface. for further information, see section 8.3 on page 15 . 8.1.2 command: otp-refresh in order to achieve the specified accuracy of v lcd , the frame frequency, and the temperature measurement, each ic is calibrated during production and testing of the device. this calibration is performed on eprom cells called one time programmable (otp) cells. these cells are read by the device at power-on and every time when the initialize command or the ot p-refresh command is sent. this command will take approximately 10 ms to finish. 8.1.3 command: oscillator-ctrl the oscillator-ctrl command swit ches between internal and ex ternal oscillator and enables or disables pin clk. [1] default value. table 6. initialize - initialize command bit description bit symbol value description initialize-msb 7 to 0 - 00111010 fixed value initialize-lsb 7 to 0 - 00000100 fixed value table 7. otp-refresh - otp-re fresh command bit description bit symbol value description 7 to 0 - 11010000 fixed value table 8. oscillator-ctrl - oscillator control command bit description for further information, see section 8.5 on page 35 . bit symbol value description 7 to 2 - 110011 fixed value 1 coe control pin clk 0 [1] clock signal not available on pin clk; pin clk is in 3-state and may be left floating 1 clock signal available on pin clk 0 osc oscillator source 0 [1] internal oscillator running 1 external oscillator used; pin clk becomes an input free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 8 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 8.1.4 command: charge-pump-ctrl the charge-pump-ctrl command enables or disables the internal v lcd generation and controls the charge pump voltage multiplier setting. [1] default value. 8.1.5 command: temp-msr-ctrl the temp-msr-ctrl command enables or disables the temperature measurement block and the temperature compensation of v lcd . [1] default value. 8.1.6 command: set-vpr-msb and set-vpr-lsb with these two instructions, it is possible to set the target v lcd voltage for the internal charge pump, see section 8.4.3 on page 28 . [1] default value. table 9. charge-pump-ctrl - charge pump control command bit description bit symbol value description 7 to 2 - 110000 fixed value 1 cpe charge pump switch 0 [1] charge pump disabled; no internal v lcd generation; external supply of v lcd 1 charge pump enabled 0 cpc charge pump voltage multiplier setting 0 [1] v lcd = 2 ? v dd2 1v lcd = 3 ? v dd2 table 10. temp-msr-ctrl - temperature measurement control command bit description for further information, see section 8.4.8 on page 33 . bit symbol value description 7 to 2 - 110010 fixed value 1 tce temperature compensation switch 0 no temperature compensation of v lcd possible 1 [1] temperature compensation of v lcd possible 0 tme temperature measurement switch 0 temperature measurement disabled; no temperature readout possible 1 [1] temperature measurement enabled; temperature readout possible table 11. set-vpr-msb - set vpr msb command bit description bit symbol value description 7 to 4 - 0100 fixed value 3 to 0 vpr[7:4] 0000 [1] to 1111 the four most si gnificant bits of vpr[7:0] free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 9 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump [1] default value. 8.1.7 command: display-enable [1] default value. 8.1.8 command: set-mux-mode [1] default value. 8.1.9 command: set-bias-mode [1] default value. 8.1.10 command: load-data-pointer the load-data-pointer command defines one of the 60 display ram addresses where the following display data will be sent to. for further information, see section 8.9.1 on page 38 . table 12. set-vpr-lsb - set vpr lsb command bit description bit symbol value description 7 to 4 - 0101 fixed value 3 to 0 vpr[3:0] 0000 [1] to 1111 the four least significant bits of vpr[7:0] table 13. display-enable - display enable command bit description bit symbol value description 7 to 1 - 0011100 fixed value 0e 0 [1] display disabled; backplane and segment outputs are internally connected to v ss 1 display enabled table 14. set-mux-mode - set multiplex drive mode comman d bit description bit symbol value description 7 to 3 - 00000 fixed value 2 to 0 m[2:0] 001 static drive mode: 1 backplane 010 1:2 multiplex drive mode: 2 backplanes 100 [1] 1:4 multiplex drive mode: 4 backplanes table 15. set-bias-mode - set bias mode command bit description bit symbol value description 7 to 2 - 110001 fixed value 1 to 0 b[1:0] 00 [1] , 01 1 4 bias 11 1 3 bias 10 1 2 bias table 16. load-data-pointer - load data pointer command bit description bit symbol value description 7 to 6 - 10 fixed value 5 to 0 p[5:0] 000000 to 111111 6-bit binary value of 0 to 59 free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 10 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 8.1.11 command: frame-frequency with the frame-frequency command, the frame frequency and the out put clock frequency can be configured. [1] nominal frame frequency calculated for the default clock frequency of 9600 hz. [2] duty cycle definition: % high-level time : % low-level time. [3] default value. 8.1.12 bank select commands it is possible to write data to one area of th e ram while displaying it from another. these areas are named as ram banks. input and ou tput banks can be set independently from one another with the input-bank-select and the output-bank-select command. for further information, see section 8.9.2 on page 41 . table 17. frame frequency - frame frequency and output clock frequency command bit description bit symbol value description 7 to 5 - 011 fixed value 4 to 0 f[4:0] see ta b l e 1 8 nominal frame frequency (hz) table 18. frame frequency values f[4:0] nominal frame frequency, f fr (hz) [1] resultant oscillator frequency, f osc (hz) duty cycle (%) [2] 00000 60 2880 20 : 80 00001 70 3360 7 : 93 00010 80 3840 47 : 53 00011 91 4368 40 : 60 00100 100 4800 33 : 67 00101 109 5232 27 : 73 00110 120 5760 20 : 80 00111 129.7 6226 13 : 87 01000 141.2 6778 5 : 95 01001 150 7200 50 : 50 01010 160 7680 47 : 53 01011 171.4 8227 43 : 57 01100 177.8 8534 41 : 59 01101 192 9216 36 : 64 01110 [3] 200 9600 33 : 67 01111 208.7 10018 30 : 70 10000 218.2 10474 27 : 73 10001 228.6 10973 23 : 77 10010 240 11520 20 : 80 10011 252.6 12125 16 : 84 10100, 10101 266.7 12802 10 : 90 10110, 10111 282.4 13555 5 : 95 11000 to 11111 300 14 400 50 : 50 free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 11 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 8.1.12.1 command: input-bank-select [1] default value. 8.1.12.2 command: output-bank-select [1] default value. 8.1.13 command: write-ram-data the write-ram-data command writes data byte-wise to the ram. after power-on reset (por) the ram content is random and should be br ought to a defined status by clearing it (setting it logic 0). [1] for this command bit rs of the control byte has to be set logic 1 (see table 34 on page 46 ). more information about the display ram can be found in section 8.9 on page 37 . 8.1.14 command: temp-read the temp-read command allows reading out the temperature values measured by the internal temperature sensor. [1] for this command bit r/w of the i 2 c-bus slave address byte has to be set logic 1 (see table 33 on page 45 ). table 19. input-bank-select - input ba nk select command bit description bit symbol value description 7 to 3 - 00001 fixed value 2 ib selects ram bank to write to 0 [1] bank 0 1 bank 1 1 to 0 - 00 fixed value table 20. output-bank-select - output bank select command bit description bit symbol value description 7 to 3 - 00010 fixed value 2 ob selects ram bank to read from to the lcd 0 [1] bank 0 1 bank 1 1 to 0 - 00 fixed value table 21. write-ram-data - write ram data command bit description [1] bit symbol value description 7 to 0 b[7:0] 00000000 to 11111111 writing data byte-wise to ram table 22. temp-read - temperature readout command bit description [1] for further information, see table 10 on page 8 and section 8.4.7 on page 32 . bit symbol value description 7 to 0 td[7:0] 00000000 to 11111111 readout representing the digital temperature free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 12 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 8.1.15 command: invmode_cpf_ctrl the invmode_cpf_ctrl command allows changing the drive scheme inversion mode and the charge pump frequency. the waveforms used to drive lcd displays inherently produce a dc voltage across the display cell. the PCA8543 compensates for the dc voltage by inverting the waveforms on alternate frames or alternate lines. the choice of compensation method is determined with the lf bit. [1] default value. in frame inversion mode, the dc value is compensated across two frames and not within one frame. changing the inversion mode to frame inversion reduces the power consumption, therefore it is useful when power consumption is a key point in the application. frame inversion may not be suitable for all applications. the rms voltage across a segment is better defined, however since the switching frequency is reduced there is possibility for flicker to occur. the waveforms of figure 15 on page 24 to figure 18 on page 27 are showing line inversion mode. 8.1.16 command: temp-filter [1] default value. table 23. invmode_cpf_ctrl - inversion mode and charge pump frequency prescaler command bit description bit symbol value description 7 to 2 - 110101 fixed value 1 lf set inversion mode 0 [1] line inversion mode 1 frame inversion mode 0 cpf set charge pump oscillator frequency 0 [1] f osc(cp) ~1mhz 1f osc(cp) ~ 500 khz table 24. temp-filter - digital temper ature filter command bit description bit symbol value description 7 to 1 - 1101001 fixed value 0 tfe digital temperature filter switch 0 [1] digital temperature filter disabled; the unfiltered digital value of td[7:0] is immediately available for the readout and v lcd compensation, see section 8.4.7 on page 32 1 digital temperature filter enabled free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 13 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 8.2 possible display configurations the PCA8543 is a versatile peripheral device designed to interface between any microcontroller to a wide variety of lcd segment or dot matrix displays (see figure 3 ). it can directly drive any static or multiplexed l cd containing up to four backplanes and up to 60 segments. the display configurations possible with t he PCA8543 depend on the number of active backplane outputs required. a selection of po ssible display configurations is given in ta b l e 2 5 . all of the display configurations in ta b l e 2 5 can be implemented in the typical systems shown in figure 4 (internal v lcd ) and in figure 5 (external v lcd ). fig 3. example of displa ys suitable for PCA8543 table 25. selection of possi ble display configurations number of backplanes icons digits/characters dot matrix/ elements 7-segment 14-segment 4 240 30 15 240 dots (4 ? 60) 2 120 15 7 120 dots (2 ? 60) 1607360dots (1 ? 60) v h j p h q w z l w k g r w v h j p h q w z l w k g r w d q g d f f h q w d d d g r w p d w u l [ free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 14 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump the host microcontroller maintains the two line i 2 c-bus communication channel with the PCA8543. the appropriate biasing voltages for the multiplexed lcd waveforms are generated internally. the only other connection s required to complete the system are the power supplies (v dd1 , v dd2, v ss , v lcd ), the external capacitors, and the lcd panel selected for the application. the minimum recommended values for external capacitors on v dd1 , v dd2 , and v lcd are nominal 100 nf. when using bigger capacitors, especially on the v lcd , the generated ripple will be consequently smaller. however it will take longer for the internal charge pump to reach the target v lcd voltage first. if v dd1 and v dd2 are connected externally, the capacitors on v dd1 and v dd2 can be replaced by a single capacitor with a minimum value of 200 nf. remark: in the case of insufficient decoupling, ripple of v dd1 and v dd2 will create additional v lcd ripple. the ripple on v lcd can be reduced by making the v ss connection as low-ohmic as possible. excessive ripple on v lcd may cause flicker on the display. v dd1 from 2.5 v to 5.5 v and v dd2 from 2.5 v to 5.5 v. fig 4. typical system configuration when using the internal v lcd generation v dd1 from 2.5 v to 5.5 v, v dd2 from 2.5 v to 5.5 v and v lcd from 2.5 v to 9.0 v. fig 5. typical system configurati on when using an external v lcd + 2 6 7 0 , & 5 2 & 2 1 7 5 2 / / ( 5 5 ? w u & e 6 ' $ 6 & / v h j p h q w g u l y h v e d f n s o d q h v / & ' 3 $ 1 ( / x s w r h o h p h q w v 3 & $ $ $ 9 ' ' 9 6 6 9 6 6 d d d 9 ' ' 9 / & ' 9 ' ' 9 ' ' & / . q f + 2 6 7 0 , & 5 2 & 2 1 7 5 2 / / ( 5 5 ? w u & e 6 ' $ 6 & / v h j p h q w g u l y h v e d f n s o d q h v / & ' 3 $ 1 ( / x s w r h o h p h q w v 3 & $ $ $ 9 ' ' 9 6 6 9 6 6 d d d 9 / & ' 9 / & ' 9 ' ' 9 ' ' & / . q f free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 15 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 8.3 start-up and shut-down 8.3.1 power-on reset (por) after power-on the PCA8543 has to be initialized by sending the two bytes of the initialize command (see section 8.1.1 and ta b l e 6 ). 1. all backplane and segment outputs are set to v ss . 2. selected drive mode is: 1:4 with 1 4 bias. 3. input and output bank selectors are reset. 4. the i 2 c-bus interface is initialized. 5. the data pointer is cleared (set logic 0). 6. the internal oscillator is runn ing; no clock signal is available on pin clk; pin clk is in 3-state. 7. temperature measurement is enabled. 8. temperature filter is disabled. 9. the internal v lcd voltage generation is disabled. the charge pump is switched off. 10. the v lcd temperature compensation is enabled. 11. the display is disabled. the state after initialization is shown in table 26 . table 26. reset states bits labeled - are undefined at power-on. command name bits 7 6 5 4 3 2 1 0 oscillator-ctrl 11001100 charge-pump-ctrl 11000000 temp-msr-ctrl 1 1 0 0 1 0 1 1 temp-comp-sla 00011000 temp-comp-slb 00100000 temp-comp-slc 00101000 temp-comp-sld 00110000 set-vpr-msb 01000000 set-vpr-lsb 01010000 display-enable 0 0 1 1 1 0 0 0 set-mux-mode 00000100 set-bias-mode 11000100 load-data-pointer 1 0 0 0 0 0 0 0 frame-frequency 0 1 1 0 1 1 1 0 input-bank-select 00001000 output-bank-select 0 0 0 1 0 0 0 0 write-ram-data -------- free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 16 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump remark: do not transfer data on the i 2 c-bus for at least 1 ms after a power-on to allow the reset action to complete. the first command sent to the device after the power-on event must be the initialize command (see section 8.1.1 on page 7 ). after power-on reset (por) and before enabling the display, the ram content should be brought to a defined status ? by clearing it (setting it all logic 0) or ? by writing meaningful content (for example, a graphic) otherwise unwanted display artifacts may appear on the display. temp-read 01000000 invmode_cpf_ctrl11010100 temp-filter 11010010 table 26. reset states ?continued bits labeled - are undefined at power-on. command name bits 7 6 5 4 3 2 1 0 free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 17 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 8.3.2 recommended start-up sequences this chapter describes how to proceed with the initialization of the chip in different application modes. (1) this time depends on the external capacitor on pin v lcd . for a capacitor of 100 nf a delay of 5 ms to 15 ms is expected. when using the internal v lcd generation, the display must not be enabled before the generation of v lcd with the internal charge pump is complete d. otherwise unwanted display artifacts may appear on the display. (2) ram data may be written before or during the ramp-up of v lcd . fig 6. recommended start-up sequence when using the internal charge pump and the internal clock signal : d l w p l q l p x p p v 6 7 $ 5 7 3 r z h u r q 9 ' ' d q g 9 ' ' d w w k h v d p h w l p h d d d 6 h w 9 3 5 u h j l v w h u w r g h v l u h g 9 / & ' y d o x h 6 h w p x o w l s o l f d w l r q i d f w r u i r u f k d u j h s x p s d q g h q d e o h l w : d l w w l o o 9 / & ' u h d f k h v s u r j u d p p h g y d o x h : u l w h 5 $ 0 f r q w h q w w r e h g l v s o d \ h g d q g h q d e o h w k h g l v s o d \ 6 7 2 3 , q l w l d w h d q 2 7 3 u h i u h v k , q l w l d o l ] h f r p p d q g free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 18 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump fig 7. recommended start-up sequence when using an external supplied v lcd and the internal clock signal (1) the external clock signal can be a pplied after the generation of the v lcd voltage as well. (2) this time depends on the external capacitor on pin v lcd . for a capacitor of 100 nf a delay of 5 ms to 15 ms is expected. (3) ram data may be written before or during the ramp-up of v lcd . fig 8. recommended start-up sequence when using the internal charge pump and an external clock signal : d l w p l q l p x p p v 6 7 $ 5 7 3 r z h u r q 9 ' ' 9 ' ' d q g 9 / & ' d w w k h v d p h w l p h , q l w l d o l ] h f r p p d q g d d d : u l w h 5 $ 0 f r q w h q w w r e h g l v s o d \ h g d q g h q d e o h w k h g l v s o d \ 6 7 2 3 , q l w l d w h d q 2 7 3 u h i u h v k : d l w p l q l p x p p v 6 7 $ 5 7 3 r z h u r q 9 ' ' d q g 9 ' ' d w w k h v d p h w l p h , q l w l d o l ] h f r p p d q g d d d 6 h w 9 3 5 u h j l v w h u w r g h v l u h g 9 / & ' y d o x h : d l w w l o o 9 / & ' u h d f k h v s u r j u d p p h g y d o x h : u l w h 5 $ 0 f r q w h q w w r e h g l v s o d \ h g d q g h q d e o h w k h g l v s o d \ 6 7 2 3 $ s s o \ h [ w h u q d o f o r f n v l j q d o w r s l q & / . v h w 2 6 & e l w o r j l f , q l w l d w h d q 2 7 3 u h i u h v k 6 h w p x o w l s o l f d w l r q i d f w r u i r u f k d u j h s x p s d q g h q d e o h l w free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 19 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 8.3.3 recommended power-down sequences with the following sequences, the PCA8543 can be set to a state of minimum power consumption, called power-down mode. fig 9. recommended start-up sequence when using an external supplied v lcd and an external clock signal : d l w p l q l p x p p v 6 7 $ 5 7 , q l w l d o l ] h f r p p d q g d d d : u l w h 5 $ 0 f r q w h q w w r e h g l v s o d \ h g d q g h q d e o h w k h g l v s o d \ 6 7 2 3 $ s s o \ h [ w h u q d o f o r f n v l j q d o w r s l q & / . v h w 2 6 & e l w o r j l f 3 r z h u r q 9 ' ' 9 ' ' d q g 9 / & ' d w w k h v d p h w l p h , q l w l d w h d q 2 7 3 u h i u h v k fig 10. recommended power-down sequence for minimum power- down current when using the internal charge pump and the internal clock signal stop genera- tion of v lcd by setting bit cpe logic 0 start disable dis- play by setting bit e logic 0 disable tem- perature mea- surement by setting bit tme logic 0 013aaa253 stop free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 20 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump fig 11. recommended power-down sequence when using an external supplied v lcd and the internal clock signal fig 12. recommended power-down sequence when using the internal charge pump and an external clock signal start disable dis- play by setting bit e logic 0 disable tem- perature mea- surement by setting bit tme logic 0 013aaa254 stop stop genera- tion of v lcd by setting bit cpe logic 0 start disable dis- play by setting bit e logic 0 disable tem- perature mea- surement by setting bit tme logic 0 013aaa255 stop external clock may be switched off bring pin clk to 3-state by setting bit osc and bit coe logic 0 free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 21 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump remark: it is necessary to run the power-down sequence before removing the supplies. depending on the application, care must be ta ken that no other signals are present at the chip input or output pins when removing the supplies (refer to section 10 on page 47 ). otherwise it may cause unwanted display ar tifacts. the PCA8543 will not be damaged by uncontrolled removal of supply voltages remark: static voltages across the liquid crystal display can build up when the external lcd supply voltage (v lcd ) is on while the ic supply voltage (v dd1 or v dd2 ) is off, or vice versa. it may cause unwanted display artifacts. to avoid such artifacts, external v lcd , v dd1 , and v dd2 must be applied or removed together. remark: a clock signal must always be supplied to the device when the device is active; removing the clock may freeze the lcd in a dc state, which is not suitable for the liquid crystal. it is recommended to first disable the display and afterwards to remove the clock signal. 8.4 lcd voltage 8.4.1 lcd voltage selector the lcd voltage selector co-ordinates the mult iplexing of the lcd in accordance with the selected lcd drive configuration. the operation of the voltage selector is controlled by the set-bias-mode command (see table 15 on page 9 ) and the set-mux-mode command (see table 14 on page 9 ). intermediate lcd biasing voltages are obtained from an internal voltage divider. the biasing configurations that apply to the preferred modes of operation, together with the biasing characteristics as functions of v lcd and the resulting discrimination ratios (d), are given in table 27 . discrimination is a term which is defined as the ratio of the v on(rms) and v off(rms) across a segment. it can be thought of as a measurement of contrast. fig 13. recommended power-down sequence when using an external supplied v lcd and an external clock signal start disable dis- play by setting bit e logic 0 disable tem- perature mea- surement by setting bit tme logic 0 013aaa256 stop bring pin clk to 3-state by setting bit osc and bit coe logic 0 external clock may be switched off free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 22 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump [1] determined from equation 3 . [2] determined from equation 2 . [3] in these examples the discrimination fa ctor and hence the contrast ratios are smal ler. the advantage of these lcd drive mode s is a power saving from a reduction of the lcd voltage v lcd . a practical value for v lcd is determined by equating v off(rms) with a defined lcd threshold voltage (v th(off) ), typically when the lcd exhibits approximately 10 % contrast. in the static drive mode a suitable choice is v lcd >3v th(off) . bias is calculated by , where the values for a are a = 1 for 1 2 bias a = 2 for 1 3 bias a = 3 for 1 4 bias the rms on-state voltage (v on(rms) ) for the lcd is calculated with equation 1 : (1) where v lcd is the resultant voltage at the lcd segment and where the values for n are n = 1 for static mode n = 2 for 1:2 multiplex n = 4 for 1:4 multiplex the rms off-state voltage (v off(rms) ) for the lcd is calculated with equation 2 : (2) discrimination is the ratio of v on(rms) to v off(rms) and is determined from equation 3 : (3) it should be noted that v lcd is sometimes referred as the lcd operating voltage. table 27. lcd drive modes: summary of characteristics lcd drive mode number of: lcd bias configuration [1] v lcd [2] backplanes levels static 1 2 static 0 1 ? v on(rms) 1:2 multiplex 2 3 1 2 0.354 0.791 2.236 2.828 ? v off(rms) 1:2 multiplex 2 4 1 3 0.333 0.745 2.236 3.0 ? v off(rms) 1:2 multiplex [3] 25 1 4 0.395 0.729 1.845 2.529 ? v off(rms) 1:4 multiplex [3] 43 1 2 0.433 0.661 1.527 2.309 ? v off(rms) 1:4 multiplex 4 4 1 3 0.333 0.577 1.732 3.0 ? v off(rms) 1:4 multiplex [3] 45 1 4 0.331 0.545 1.646 3.024 ? v off(rms) v off rms ?? v lcd ---------------------- - v on rms ?? v lcd ---------------------- d v on rms ?? v off rms ?? ---------------------- - = 1 1a + ------------ - v on rms ?? a 2 2a n ++ n 1a + ?? ? ----------------------------- - v lcd = v off rms ?? a 2 2a ? n + n 1a + ?? ? ----------------------------- - v lcd = v on rms ?? v off rms ?? ---------------------- a1 + ?? n 1 ? ?? + a1 ? ?? n 1 ? ?? + ------------------------------------------- - = free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 23 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 8.4.1.1 electro-optical performance suitable values for v on(rms) and v off(rms) are dependent on the lcd liquid used. the rms voltage, at which a pixel will be switched on or off, determine the transmissibility of the pixel. for any given liquid, there are two threshold values defined. one point is at 10 % relative transmission (at v th(off) ) and the other at 90 % relative transmission (at v th(on) ), see figure 14 . for a good contrast performance, the following rules should be followed: (4) (5) v on(rms) and v off(rms) are properties of the display driver and are affected by the selection of a, n (see equation 1 to equation 3 ) and the v lcd voltage. v th(off) and v th(on) are properties of the lcd liquid and can be provided by the module manufacturer. it is important to match the module properties to those of the driver in order to achieve optimum performance. fig 14. electro-optical characteristic: relative transmission curve of the liquid v on rms ?? v th on ?? ? v off rms ?? v th off ?? ? 9 5 0 6 > 9 @ 2 ) ) 6 ( * 0 ( 1 7 * 5 ( < 6 ( * 0 ( 1 7 2 1 6 ( * 0 ( 1 7 9 w k r i i 9 w k r q 5 h o d w l y h 7 u d q v p l v v l r q d d d free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 24 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 8.4.2 lcd drive mode waveforms 8.4.2.1 static drive mode the static lcd drive mode is used when a single backplane is provided in the lcd. v state1 (t) = v sn (t) ? v bp0 (t). v state2 (t) = v (sn + 1) (t) ? v bp0 (t). v on(rms) (t) = v lcd . v off(rms) (t) = 0 v. fig 15. static drive mode wave forms (line inversion mode) d d d 9 6 6 9 / & ' 9 6 6 9 / & ' 9 6 6 9 / & ' 9 / & ' 9 / & ' 9 / & ' 9 / & ' v w d w h 9 % 3 6 q 6 q v w d w h 9 d : d y h i r u p v d w g u l y h u e 5 h v x o w d q w z d y h i r u p v d w / & ' v h j p h q w / & ' v h j p h q w v v w d w h r q v w d w h r i i 7 i u free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 25 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 8.4.2.2 1:2 multiplex drive mode when two backplanes are provided in the lcd, the 1:2 multiplex mode applies. the PCA8543 allows the use of 1 2 bias or 1 3 bias in this mode as shown in figure 16 and figure 17 . v state1 (t) = v sn (t) ? v bp0 (t). v state2 (t) = v sn (t) ? v bp1 (t). v on(rms) (t) = 0.791v lcd . v off(rms) (t) = 0.354v lcd . fig 16. waveforms for the 1:2 multiplex drive mode with 1 2 bias (line inversion mode) d d d v w d w h % 3 d : d y h i r u p v d w g u l y h u e 5 h v x o w d q w z d y h i r u p v d w / & ' v h j p h q w / & ' v h j p h q w v v w d w h % 3 v w d w h v w d w h 9 6 6 9 / & ' 9 / & ' 9 6 6 9 6 6 9 / & ' 9 / & ' 9 6 6 9 / & ' 9 / & ' 9 / & ' 9 9 9 / & ' 9 / & ' 9 / & ' 9 / & ' 9 / & ' 9 / & ' 9 / & ' 6 q 6 q 7 i u free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 26 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump v state1 (t) = v sn (t) ? v bp0 (t). v state2 (t) = v sn (t) ? v bp1 (t). v on(rms) (t) = 0.745v lcd . v off(rms) (t) = 0.333v lcd . fig 17. waveforms for the 1:2 multiplex drive mode with 1 3 bias (line inversion mode) d d d v w d w h % 3 d : d y h i r u p v d w g u l y h u e 5 h v x o w d q w z d y h i r u p v d w / & ' v h j p h q w / & ' v h j p h q w v v w d w h % 3 v w d w h v w d w h 9 6 6 9 / & ' 9 / & ' 9 / & ' 9 6 6 9 / & ' 9 / & ' 9 / & ' 9 6 6 9 / & ' 9 / & ' 9 / & ' 9 9 / & ' 9 / & ' 9 / & ' 9 / & ' 9 / & ' 9 / & ' 9 / & ' 9 9 / & ' 9 / & ' 9 / & ' 9 / & ' 9 / & ' 6 q 6 q 7 i u 9 6 6 9 / & ' 9 / & ' 9 / & ' free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 27 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 8.4.2.3 1:4 multiplex drive mode when four backplanes are provided in the lcd, the 1:4 multiplex drive mode applies, as shown in figure 18 . v state1 (t) = v sn (t) ? v bp0 (t). v state2 (t) = v sn (t) ? v bp1 (t). v on(rms) (t) = 0.577v lcd . v off(rms) (t) = 0.333v lcd . fig 18. waveforms for the 1:4 multiplex drive mode with 1 3 bias (line inversion mode) d d d v w d w h % 3 e 5 h v x o w d q w z d y h i r u p v d w / & ' v h j p h q w / & ' v h j p h q w v v w d w h % 3 v w d w h v w d w h % 3 d : d y h i r u p v d w g u l y h u % 3 6 q 6 q 6 q 6 q 7 i u 9 6 6 9 / & ' 9 / & ' 9 / & ' 9 6 6 9 / & ' 9 / & ' 9 / & ' 9 6 6 9 / & ' 9 / & ' 9 / & ' 9 6 6 9 / & ' 9 / & ' 9 / & ' 9 6 6 9 / & ' 9 / & ' 9 / & ' 9 6 6 9 / & ' 9 / & ' 9 / & ' 9 6 6 9 / & ' 9 / & ' 9 / & ' 9 9 / & ' 9 / & ' 9 / & ' 9 / & ' 9 / & ' 9 / & ' 9 9 / & ' 9 / & ' 9 / & ' 9 / & ' 9 / & ' 9 / & ' 9 6 6 9 / & ' 9 / & ' 9 / & ' free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 28 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 8.4.3 v lcd generation v lcd can be generated and controlled on the chip by using software commands. when the internal charge pump is used, the programmed v lcd is available on pin v lcd . the charge pump generates a v lcd of up to 3 ? v dd2 . the charge pump can be enabled or disabled with the cpe bit (see table 9 on page 8 ). with bit cpc, the charge pump mu ltiplier setting can be configured. the final value of v lcd is a combination of the programmed vpr[7:0] value and the output of the temperature compensation block, vt[7:0]. the system is shown in figure 19 . in equation 6 the main parameters are the programmed digital value term and the compensated temperature term. (6) 1. vpr[7:0] is the binary value of the programmed voltage. 2. vt[7:0] is the binary value of the temper ature compensated voltage. its value comes from the temperature compensation block and is a two?s complement which has the value 0h at 20 ? c. 3. m and n are fixed values (see ta b l e 2 8 ). figure 20 shows how v lcd changes with the programmed value of vpr[7:0]. fig 19. v lcd generation including temperature compensation d d d 7 ( 0 3 ( 5 $ 7 8 5 ( 5 ( $ ' 2 8 7 7 ( 0 3 ( 5 $ 7 8 5 ( 2 ) ) 6 ( 7 6 / $ 6 / % 6 / & 6 / ' 7 ' 9 3 5 > @ 9 / & ' q p table 28. parameters of v lcd generation symbol value unit m3 v n0.03v v lcd vpr 7 :0 ?? vt 7 :0 ?? + ?? n ? m + = free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 29 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump the charge pump has to be configured (via bit cpc) properly to obtain the desired voltage range. for example, if v dd2 = 3.0 v and cpc is set to 2 ? v dd2 (logic 0) then the maximum theoretical value that th e charge pump can reach is v lcd = 6.0 v. but in reality, lower values will be reached due to internal resistances, see section 8.4.5 . so, if the requested value for v lcd = 7.0 v then the charge pump has to be configured with cpc set to 3 ? v dd2 (logic 1). programmable range of vpr[7:0] is from 0h to ffh. this would allow achieving v lcd > 9.0 v, but the PCA8543 has a built-in automatic limitation of v lcd at 9.0 v. if v dd2 is higher than 3.0 v, then it is important that vpr[7:0] is set to a value such that the resultant v lcd (including the temperature correction of vt[7:0]) is higher than v dd2 . 8.4.4 external v lcd supply v lcd can be directly supplied to the v lcd pin. in this case, the internal charge pump must not be enabled otherwise a high current may occur on pin v dd2 and pin v lcd . when v lcd is supplied externally, no internal temperature compensation occurs on this voltage even if bit tce is set logic 1 (see section 8.4.8 on page 33 ). the v lcd voltage which is supplied externally will be available at the segments and backplanes of the device through the chosen bias system. also programming the vpr[7:0] bit field has no effect on the v lcd which is externally supplied. (1) if v dd2 > 3.0 v then vpr[7:0] must be set so that v lcd > v dd2 . (2) automatic limitation for v lcd > 9.0 v. fig 20. v lcd programming of PCA8543 (assuming vt[7:0] = 0h) d d d p 9 / & ' 9 3 5 > @ ) ' ) ( ) ) q ) & 9 & & & $ & 9 ' ' free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 30 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 8.4.5 charge pump driving capability figure 21 illustrates the main factor determining how much curr ent the charge pump can deliver. the output resistance of the charge pump is specified in table 36 on page 49 . with these values, it can be calculated how much current the charge pump can drive under certain conditions. example: assuming that the norma l operation point is at 25 ? c with v lcd = 7.0 v and v dd2 = 5.0 v and the charge pump is set to 2 ? v dd2 . then the theoretical value of v lcd is 10.0 v and the desired one is 7.0 v. the difference between the theoretical maximum value and desired one is 3.0 v. the char ge pump resistance is nominally 0.85 k ? . equation 7 shows the possible current that the charge pump could deliver: (7) the result of this example is: in cases where no extreme dr iving capability is needed, a command is available for decreasing the charge pump frequency (see table 23 on page 12 ) and thus reducing the total current consumption. if the charge pump frequency is halved, then the driving capability is halved as well, wher eas the output re sistance doubles. 8.4.6 charge pump frequency settings and power efficiency the PCA8543 offers th e possibility to use different fr equency settings for the charge pump. bit cpf controls the frequency at which the charge pump is running (see table 23 on page 12 ). this frequency has a direct influenc e on the current consumption of the ic but also on the charge pump driving capab ility. using a lower ch arge pump frequency decreases the current consumpt ion and the driving capability. the power efficiency of the charge pump determines in certain applications which frequency settings to choose for the cp f bit. concerning the example shown in figure 22 : the current consumption was measured with ? charge pump set to 2 ? v dd2 ? v dd2 =3.0v ? vpr[7:0] set to maximum to obtain the highest possible v lcd with this setup, which is close to 6.0 v the current load on pin v lcd determines the output power delivered by the ic: fig 21. charge pump model (used to characterize the driving strength) 7 k h r u h w l f d o 9 / & ' y d o x h 9 / & ' ? 9 ' ' r u 9 / & ' ? 9 ' ' 2 x w s x w 5 h v l v w d q f h 5 r f s 5 h j x o d w h g g h v l u h g 9 / & ' 7 k l v v x s s o l h v w k h v h j p h q w v d q g e d f n s o d q h v d d d i load ? v lcd r ocp ?? ? = i load 3.0 v 0.85 k ?? 3.5 ma == free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 31 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump (8) the current consumption on pin v dd2 determines the input power taken by the ic: (9) the ratio between these two numbers determ ines the charge pump power efficiency: (10) loading the charge pump with higher currents decreases the output voltage. this decrease is determined by the charge pump driving capability, respectively by the output resistance of the charge pump (see table 36 on page 49 ). the power efficiency calculation is only valid when the charge pump is running at its maximum peak frequency and regulates the generated v lcd voltage with full speed. in this case, the ripple on the v lcd voltage equals the internal charge pump frequency. approximately, this could also be calculated wit h the parameter of the output resistance of the charge pump (see table 36 on page 49 ), the load current, and the voltage needed to be provided by using equation 7 on page 30 . this value of i load is close to the value of the load current needed for the application. if the application runs with v dd2 = 3.0 v, the load currents are up to 400 ? a (dc measured), and the v lcd generated voltages are up to 5.0 v, then - concerning power efficiency - it would be the best to have a charge pump frequency set to half frequency. charge pump set to 2 ? v dd2 ; v dd2 =3v. (1) ? p , full charge pump frequency. (2) ? p , half charge pump frequency. (3) v lcd , full frequency. (4) v lcd , half frequency. fig 22. power efficiency of the charge pump p o i load v lcd ? = p i i dd2 v dd2 ? = ? p p o p i ? = , o r d g ? $ d d q s 9 / & ' 9 free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 32 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump if it is desired to change the charge pump frequency, it is recommended to make a graph like figure 22 and understand what the application requirements are. this would basically imply to find out what would be the maximum v lcd requirements and what would be the maximum load currents required. then it can be decided which is the best setting of bit cpf. tuning the charge pump frequency might be a difficult task to do. it requires good knowledge of the application in which t he ic is being used; therefore, nxp is recommending to keep the cpf bit set logic 0 to have the maximum charge pump frequency, thus having the maximum driving strength. 8.4.7 temperature readout the PCA8543 has a built-in temperature sensor which provides an 8 bit digital value, td[7:0], of the ambient temperature. this value can be read through the i 2 c interface (see figure 41 on page 46 ). the actual temperature is determined from td[7:0] using equation 11 : (11) the measurement needs about 5 ms to complete. it is repeated periodically as soon as bit tme is set logic 1 (see table 10 on page 8 ). the time between measurements is linked to the system clock and hence varies with changes in the chosen frame frequency, see ta b l e 2 9 . due to the nature of a temperat ure sensor, oscillations on the v lcd may occur. to avoid it, a filter has been implemented in PCA8543. the system is shown in figure 23 . like any other filtering, the digital temperature filter (see figure 23 ) introduces a certain delay in the measurement of temperature. this be havior is illustrated in figure 24 . table 29. temperature measurement update rate selected frame frequency temperature measurement update rate 60 hz 3.3 s 200 hz 1 s 300 hz 0.67 s fig 23. temperature measurement block with digital temperature filter t (c) 0.9375 td 7:0 ?? 40 ? ? = 7 ( 0 3 ( 5 $ 7 8 5 ( 0 ( $ 6 8 5 ( 0 ( 1 7 % / 2 & . ' , * , 7 $ / 7 ( 0 3 ( 5 $ 7 8 5 ( ) , / 7 ( 5 7 ' > @ x q i l o w h u h g 7 ' > @ i l o w h u h g h q d e o h g r u g l v d e o h g e \ e l w 7 ) ( 7 r w k h u h d g r x w u h j l v w h u y l d , & e x v d q g w r w k h 9 / & ' f r p s h q v d w l r q e o r f n d d d free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 33 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump this delay may cause undesired effects at start-up when the environment temperature may be different than the reset value of the PCA8543 which is 20 c. in this case, it takes up to 30 s until the correct measured temper ature value will be available. a control bit, tfe, is implemented to enable or disable th e digital temperature filter. this bit is set logic 0 by default which means that the filter is disabled and the unfiltered environment temperature value is available to calculate the desired v lcd . 8.4.8 temperature compensation of v lcd due to the temperature depen dency of the liquid crystal viscosity, the lcd controlling voltage v lcd might have to be adjusted at different temperatures to maintain optimal contrast. the temperature behavior of the liquid comes from the lcd manufacturer. the slope has to be set to compensate for the liquid behavior. internal temperature compensation may be enabled via bit tce. the ambient temperature range is split up into four equally sized regions and a different temperature coefficient can be applied to each (see figure 25 ). each coefficient can be selected from a choice of eight different slopes. each one of these coefficients (see ta b l e 3 0 ) may be independently selected via the temp-comp-sla to temp-comp-sld commands (see table 5 on page 6 ). (1) environment temperature, t1 ( ? c). (2) measured temperature, t2 ( ? c). (3) temperature deviation, ? t=t2 ? t1. fig 24. temperature measurement delay w v d d o 7 ? & ? 7 ? & free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 34 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump [1] the relationship between the temperature coefficients ma to md and the slope factor is derived from the following equation: . [2] default value. the slope factors imply a linear correction, howe ver the implementation is set in steps of 30 mv (parameter n in table 28 on page 28 ). remark: after reset, v lcd is fixed because the vpr[7:0] bit field is reset logic 0. the value of vt[7:0] is generated by the reset value of td[7:0] (40h, representing 20 ? c). temperature compensation is implemented by adding an offset vt[7:0] to the vpr[7:0] value. vt[7:0] is a two?s complement number that equals 0h at 20 ? c. the final result for v lcd calculation is an 8-bit positive number (see equation 6 on page 28 ). remark: care must be taken that the ranges of vpr[7:0] and vt[7:0] do not cause clipping and hence undesired resu lts. the device will not permit overflow or underflow and will clamp results to eith er end of the range. table 30. temperature coefficients sla[2:0] to sld[2:0] value corresponding slope factor (mv/ ?c) temperature coefficients ma, mb, mc, md [1] 000 [2] 00 . 0 0 001 ? 4 ? 0.125 010 ? 8 ? 0.25 011 ? 16 ? 0.5 100 ? 40 ? 1.25 101 +4 0.125 110 +8 0.25 111 +16 0.5 fig 25. example of segmented temperature coefficients mx 0.9375 0.03 ---------------- slope 1000 ------------- - ? = 7 h p s h u d w x u h ? & d d d 7 ' > @ k k k 9 / & ' z l w k w h p s h u d w x u h f r p s h q v d w l r q 9 ] h u r r i i v h w d w ? & ) k k 0 & 0 $ 0 ' 0 % 6 / $ 6 / % 6 / & 6 / ' free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 35 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump the v offset(lcd) value can be calculated with the equations given in ta b l e 3 1 : (12) [1] no temperature compensation is possible above 80 ? c. above this value, the system maintains the compensation value from 80 ? c. example : assumed that t amb = ? 8 ? c; td[7:0] = 22h; mb = ? 0.5: (13) the vt[7:0] term is calculated using the digital temperature value td[7:0] which is provided by the temperature measurement block ( section 8.4.7 ). therefore the accuracy of the temperature measurement block (t acc , see table 36 on page 49 ) will be directly translated to the lcd voltage deviation ? v lcd . since vt[7:0] = f[t,slope] and t acc = ? 6 ? c then , where slope has one of the possible values specified in ta b l e 3 0 . this term will be added to the total lcd voltage deviation ? v offset(lcd)tot over the temperature range. so the total v lcd offset will be: . 8.5 oscillator the internal logic and lcd drive signals of the PCA8543 are timed by a frequency f clk which either is the built -in oscillator frequency f osc or equals an external clock frequency. 8.5.1 internal oscillator when the internal oscillator is us ed, it is possible to make the clock signal available on pin clk by using the oscilla tor-ctrl command (see table 8 on page 7 ). if this is not intended, pin clk should be left open. at power-on the signal at pin clk is disabled and pin clk is in 3-state. the duty cycle of the output clock provided on the clk pin is not always 50 : 50. table 18 on page 10 shows the expected duty cycle for each of the chosen frame frequencies. 8.5.2 external clock in applications where an extern al clock needs to be applied to the PCA8543, bit osc (see table 8 on page 7 ) must be set logic 1. in this case pin clk becomes an input. table 31. calculation of the temperature compensated voltage v t temperature range td[7:0] offset equa tion for v t t ? ? 40 ?c0 h ? 40 ?c ? t ?? 10 ? c 0h to 20h ? 10 ?c < t ? 20 ? c 21h to 40h 20 ? c < t ? 50 ?c 41h to 60h 50 ? c < t < 80 ?c 61h to 7eh 80 ?c ? t7 f h [1] v offset lcd ?? mv t ? = v t 32 ? ma ? 32 mb ? ? = v t td 7:0 ?? 32 ? ?? ma 32 mb ? ? ? = v t td 7:0 ?? 64 ? ?? mb ? = v t td 7:0 ?? 64 ? ?? mc ? = v t td 7:0 ?? 96 ? ?? md ? 32 mc ? + = v t 31 md ? 32 + mc ? = v offset lcd ?? mv t ? mtd [7:0] 64 ? ?? mb ? ? 30mv 34 64 ? ?? 0.5 ? ? ?? ? 30mv 30 ? 0.5 ? ?? 450mv == = = = ? v t t acc slope ? = ? v offset lcd ?? tot ? v lcd ? v t += free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 36 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump the clk signal is a signal that is fed into the v dd1 domain so it must have an amplitude equal to the v dd1 voltage supplied to the chip and be referenced to v ss . the clock frequency (f clk ) determines the lcd frame frequency f fr . remark: if an external clock is used then this clock signal must alwa ys be supplied to the device; removing the clock may freeze the lcd in a dc state, which is not suitable for the liquid crystal. removal of the clock is possibl e when following the correct procedures. see figure 12 on page 20 and figure 13 on page 21 . 8.5.3 timing and frame frequency the timing of the PCA8543 organizes the inter nal data flow of the device. it includes the transfer of display data from the display ram to the display segment outputs. the timing also generates the lcd frame frequency which it derives as an integer division of the clock frequency. the frame frequency is a fixe d division of the internal clock or of the frequency applied to pin clk when an external clock is used: (14) when the internal clock is used, the clock and frame frequency can be programmed by software such that the nominal frame frequency can be chosen in steps of 10 hz in the range of 60 hz to 300 hz (see table 18 on page 10 ). furthermore the nominal frame frequency is factory-calibra ted with an accuracy of ? 15 %. when the internal clock is enabled at pin clk by using bit coe, the duty ratio of the clock may change when choosing different values for the frame frequency prescaler. table 18 on page 10 shows the different output duty ratios for each frame frequency prescaler setting. 8.6 backplane outputs the lcd drive section includes four backplane outputs: bp0 to bp3. the backplane output signals are generated based on t he selected lcd mult iplex drive mode. ta b l e 3 2 describes which outputs are active for each of the multiplex drive modes and what signal is generated. [1] these pins may optionally be con nected to the display to improve drive strength. connect only with the corresponding output pin carrying the same signal. if not required, they can be left open-circuit. f fr f clk 48 ------- = table 32. mapping of output pins and corresponding output signals with respect to the multiplex driving mode multiplex drive mode output pin bp0 bp1 bp2 bp3 signal 1:4 bp0 bp1 bp2 bp3 1:2 bp0 bp1 bp0 [1] bp1 [1] static bp0 bp0 [1] bp0 [1] bp0 [1] free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 37 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 8.7 segment outputs the lcd drive section includes 60 segment ou tputs (s0 to s59) which must be connected directly to the lcd. the segment output signals are generated based on the multiplexed backplane signals and with data resident in the display register. when less than 60 segment outputs are required, the unused segment outputs must be left open-circuit. 8.8 display register the display register holds the display data while the corresponding multiplex signals are generated. 8.9 display ram the display ram is a static 60 ? 8-bit ram which stores lcd data. logic 1 in the ram bit map indicates the on-state of the corresponding lcd element; similarly, logic 0 indicates the off-state. there is a one-to-one correspondence between ? the bits in the ram bitmap and the lcd elements ? the ram columns and the segment outputs ? the ram rows and the backplane outputs. the display ram bit map, figure 26 , shows row 0 to row 7 which correspond with the backplane outputs bp0 to bp3, and column 0 to column 59 which correspond with the segment outputs s0 to s59. the number of rows is twice the number of backplane outputs allowing to use two different ram banks. when display data is transmitted to the PCA8543, the display bytes received are stored in the display ram in accordance with the select ed lcd multiplex drive mode. the data is stored as it arrives and does not wait for the acknowledge cycle as with the commands. depending on the current multiplex drive mode, data is stored singularly, in pairs, or quadruples. free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 38 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 8.9.1 data pointer the addressing mechanism for the display ram is realized using the data pointer. it allows the loading of an individual display data byte, or a series of display data bytes into any location of the display ram. the sequen ce commences with the initialization of the data pointer by the load-data-pointer command. following this command, an arriving data byte is stored starting at the display ra m address indicated by the data pointer. the data pointer is automatically increm ented in accordance with the chosen lcd multiplex drive mode configuration. that is, af ter each byte is stored, the contents of the data pointer are incremented ? by eight (static drive mode) ? by four (1:2 multiplex drive mode) ? by two (1:4 multiplex drive mode) if the data pointer reaches the end of the ram row, it is automatically wrapped around to address 0. this means that it can be continuously written to or read from the display ram. the display ram bitmap shows the direct relationship between the display ram column and the segment outputs, between the bits in a ram row and the backplane outputs, and between the ram rows and banks. fig 26. display ram bitmap 6 6 6 6 6 6 6 6 6 6 6 6 6 6 u r z % 3 u r z % 3 u r z % 3 u r z % 3 u r z % 3 u r z % 3 u r z % 3 u r z % 3 6 6 6 6 6 6 6 6 6 6 6 6 6 6 u r z % 3 u r z % 3 u r z u r z u r z % 3 u r z % 3 u r z u r z 6 6 6 6 6 6 6 6 6 6 6 6 6 6 u r z % 3 u r z u r z u r z u r z % 3 u r z u r z u r z e d q n e d q n e d q n e d q n e d q n e d q n ' l v s o d \ 5 $ 0 d g g u h v v h v f r o x p q v v h j p h q w r x w s x w v 6 ' l v s o d \ 5 $ 0 e l w v u r z v e d f n s o d q h r x w s x w v % 3 0 x o w l s o h [ g u l y h p r g h 0 x o w l s o h [ g u l y h p r g h 6 w d w l f g u l y h p r g h d d d free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 39 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump the data pointer should always be set to an address where the remaining ram is divisible by eight because odd bits will be discarded (see figure 28 ). this behavior is only shown in static drive mode because the 60 ram cells cannot be divided by eight without remainder. if an i 2 c-bus data access is terminated early, then the state of the data pointer is unknown. the data pointer must then be re-written before further ram accesses. 8.9.1.1 ram filling in static drive mode in the static drive mode the eight transmitte d data bits are placed in eight successive display ram columns in row 0 (see figure 27 ). in order to fill the whole ram row, 8 bytes must be sent to the PCA8543, but the last 4 bits from the last byte are discarded, and the data pointer is wrapped around to column 0 to start a possible ram content update (see figure 28 ). 8.9.1.2 ram filling in 1:2 multiplex drive mode in the 1:2 multiplex drive mode the eight tr ansmitted data bits are placed in four successive display ram columns of two rows (see figure 29 ). fig 27. display ram filling order in static drive mode fig 28. discarded bits and data pointer wrap around at the end of data transmission e e e e e e e e 0 6 % / 6 % w u d q v p l w w h g g d w d e \ w h g l v s o d \ 5 $ 0 f r o x p q v v h j p h q w r x w s x w v 6 f r o x p q v g l v s o d \ 5 $ 0 u r z v e d f n s o d q h r x w s x w v % 3 u r z v d d d e e e e e e e e g l v s o d \ 5 $ 0 g d w d s r l q w h u d d d d d d d d i i i i i i i i j j j j j j j j g l v f d u g h g z u d s d u r x q g d d d free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 40 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump in order to fill the whole two ram rows 15 byte s need to be sent to the PCA8543. after the last byte sent, the data pointer is wrapped around to column 0 to start a possible ram content update (see figure 30 ). even if a data byte is transmitted during the wrapping of the data pointer, then a ll the bits in the byte will be written correctly. 8.9.1.3 ram filling in 1:4 multiplex drive mode in the 1:4 multiplex drive mode the eight transmitted data bits are placed in two successive display ram colu mns of four rows (see figure 31 ). fig 29. display ram filling orde r in 1:2 multiplex drive mode fig 30. data pointer wrap around in 1:2 multiplex drive mode e e e e e e e e e e e e e e e e / 6 % 0 6 % w u d q v p l w w h g g d w d e \ w h d d d g l v s o d \ 5 $ 0 f r o x p q v v h j p h q w r x w s x w v 6 f r o x p q v g l v s o d \ 5 $ 0 u r z v e d f n s o d q h r x w s x w v % 3 u r z v e e e e e e e e g l v s o d \ 5 $ 0 g d w d s r l q w h u z u d s d u r x q g d d d free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 41 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump in order to fill the whole four ram rows 30 bytes need to be sent to the PCA8543. after the last byte sent, the data pointer is wrapped around to column 0 to start a possible ram content update (see figure 32 ). even if a data byte is transmitted during the wrapping of the data pointer, all the bits in the byte will be written correctly. 8.9.2 bank selection a ram bank can be thought of as a collection of ram rows. the PCA8543 includes a ram bank switching feature. the ram bank switching gives the provisio n for preparing display information in an alternative bank and to be able to switch to it once it is complete. input and output banks can be set independently from one another with the input-bank-select and the output-bank-select commands; figure 33 shows the concept. fig 31. display ram filling orde r in 1:4 multiplex drive mode fig 32. data pointer wrap around in 1:4 multiplex drive mode e e e e e e e e 0 6 % / 6 % w u d q v p l w w h g g d w d e \ w h e e e e e e e e g l v s o d \ 5 $ 0 f r o x p q v v h j p h q w r x w s x w v 6 f r o x p q v g l v s o d \ 5 $ 0 u r z v e d f n s o d q h r x w s x w v % 3 u r z v d d d e e e e e e e e g l v s o d \ 5 $ 0 f r o x p q v v h j p h q w r x w s x w v 6 f r o x p q v g l v s o d \ 5 $ 0 g d w d s r l q w h u d d d z u d s d u r x q g free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 42 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump in figure 33 an example is shown for 1:4 multiplex drive mode. the displayed data is read from the first four rows of th e memory (bank 0), while the transmitted data is stored in the second four rows of the memory (bank 1) wh ich is currently not accessed for the reading. therefore different content can be loaded into the first and second four ram rows which will be immediately displayed on the lcd by switching it with th e output-bank-select command (see figure 34 ). 8.9.2.1 input-bank-select the ibs bit in the input-bank-select command (see table 19 on page 11 ) controls in which ram bank the display data is loaded. the input-bank-select command works independently to the output-bank-select. 8.9.2.2 output-bank-select the obs bit in the output-bank-select command (see table 20 on page 11 ) controls from which ram bank the display data is displaye d. the output-bank-select command works independently to the input-bank-select. fig 33. example of bank sele ction in 1:4 multiplex mode fig 34. example of the input-bank-select an d the output-bank-se lect command with multiplex drive mode 1:4 0 , & 5 2 & 2 1 7 5 2 / / ( 5 ' , 6 3 / $ < 5 $ 0 % $ 1 . % $ 1 . d d d , % 6 & 2 1 7 5 2 / 6 7 + ( , 1 3 8 7 ' $ 7 $ 3 $ 7 + 2 % 6 & 2 1 7 5 2 / 6 7 + ( 2 8 7 3 8 7 ' $ 7 $ 3 $ 7 + u r z % 3 u r z % 3 u r z % 3 u r z % 3 g l v s o d \ 5 $ 0 f r o x p q v v h j p h q w r x w s x w v 6 f r o x p q v g l v s o d \ 5 $ 0 u r z v e d f n s o d q h r x w s x w v % 3 u r z v d d d u r z % 3 u r z % 3 u r z % 3 u r z % 3 w r w k h / & ' r x w s x w 5 $ 0 e d q n l q s x w 5 $ 0 e d q n w r w k h 5 $ 0 free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 43 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 9. i 2 c-bus interface characteristics the i 2 c-bus is for bidirectional, two-line communication between different ics or modules. the two lines are a serial data line (sda) and a serial clock line (scl). both lines must be connected to a positive supply via a pull-up resistor when connected to the output stages of a device. data transfer may be initiated only when the bus is not busy. 9.1 bit transfer one data bit is transferred during each cloc k pulse. the data on the sda line must remain stable during the high period of the clock pulse as changes in the data line at this time will be interpreted as a control signal (see figure 35 ). 9.2 start and stop conditions both data and clock lines remain high when the bus is not busy. a high-to-low change of the data line, while the clock is high is defined as the start condition (s). a low-to-high change of the data line while the clock is high is defined as the stop condition (p). the start and stop conditions are shown in figure 36 . 9.3 system configuration a device generating a message is a transmit ter; a device receiving a message is the receiver. the device that controls the message is the master; and the devices which are controlled by the master are the slaves. the system configuration is shown in figure 37 . fig 35. bit transfer p e d g d w d o l q h v w d e o h g d w d y d o l g f k d q j h r i g d w d d o o r z h g 6 ' $ 6 & / fig 36. definition of start and stop conditions p e f 6 ' $ 6 & / 3 6 7 2 3 f r q g l w l r q 6 ' $ 6 & / 6 6 7 $ 5 7 f r q g l w l r q free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 44 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 9.4 acknowledge the number of data bytes transferred between the start and stop conditions from transmitter to receiver is unlim ited. each byte of eight bits is followed by an acknowledge cycle. ? a slave receiver which is addressed must generate an acknowledge after the reception of each byte. ? also a master receiver must generate an acknowledge after the reception of each byte that has been clocked out of the slave transmitter. ? the device that acknowledges must pull-down the sda line during the acknowledge clock pulse, so that the sda line is st able low during the high period of the acknowledge related clock pulse (set-up and hold times must be taken into consideration). ? a master receiver must signal an end of da ta to the transmitter by not generating an acknowledge on the last byte that has been clocked out of the slave. in this event, the transmitter must leave the data line high to enable the master to generate a stop condition. acknowledgement on the i 2 c-bus is shown in figure 38 . fig 37. system configuration p j d 6 ' $ 6 & / 0 $ 6 7 ( 5 7 5 $ 1 6 0 , 7 7 ( 5 5 ( & ( , 9 ( 5 0 $ 6 7 ( 5 7 5 $ 1 6 0 , 7 7 ( 5 6 / $ 9 ( 7 5 $ 1 6 0 , 7 7 ( 5 5 ( & ( , 9 ( 5 6 / $ 9 ( 5 ( & ( , 9 ( 5 0 $ 6 7 ( 5 7 5 $ 1 6 0 , 7 7 ( 5 5 ( & ( , 9 ( 5 fig 38. acknowledgement on the i 2 c-bus p e f 6 6 7 $ 5 7 f r q g l w l r q f o r f n s x o v h i r u d f n q r z o h g j h p h q w q r w d f n q r z o h g j h d f n q r z o h g j h g d w d r x w s x w e \ w u d q v p l w w h u g d w d r x w s x w e \ u h f h l y h u 6 & / i u r p p d v w h u free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 45 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 9.5 i 2 c-bus controller the PCA8543 acts as an i 2 c-bus slave receiver. it does not initiate i 2 c-bus transfers or transmit data to an i 2 c-bus master receiver. the only data output from PCA8543 are the acknowledge signals and the temperature readout byte of the selected device. 9.6 input filters to enhance noise immunity in electrically ad verse environments, rc low-pass filters are provided on the sda and scl lines. 9.7 i 2 c-bus slave address device selection depends on the i 2 c-bus slave address. four different i 2 c-bus slave addresses can be us ed to address the PCA8543 (see ta b l e 3 3 ). the least significant bit of the slave address byte is bit r/w . bit 1 and bit 2 of the slave address are defined by connecting the inputs a0 and a1 to either v ss (logic 0) or v dd (logic 1). therefore, four instances of PCA8543 can be distinguished on the same i 2 c-bus. 9.8 i 2 c-bus protocol table 33. i 2 c slave address slave address bit 7 6 5 4 3 2 1 0 msb lsb slave address 0 1 1 1 0 a1 a0 r/w fig 39. i 2 c-bus protocol write mode ( ; $ 0 3 / ( 6 d w u d q v p l w w z r e \ w h v r i 5 $ 0 g d w d d d d $ 6 f r q w u r o e \ w h v o d y h d g g u h v v 5 $ 0 f r p p d q g e \ w h 5 $ 0 ' $ 7 $ 0 6 % / 6 % $ $ 3 5 : 6 $ $ $ 3 5 $ 0 ' $ 7 $ $ e w u d q v p l w w z r f r p p d q g e \ w h v & 2 0 0 $ 1 ' 6 $ $ $ 3 & 2 0 0 $ 1 ' $ $ f w u d q v p l w r q h f r p p d q g e \ w h d q g w z r 5 $ 0 g d w h e \ w h v & 2 0 0 $ 1 ' 6 $ $ $ 3 5 $ 0 ' $ 7 $ $ 5 $ 0 ' $ 7 $ $ $ & 2 5 6 $ $ $ $ $ $ $ free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 46 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump the i 2 c-bus protocol is shown in figure 39 . the sequence is initiated with a start condition (s) from the i 2 c-bus master which is followed by one of the four PCA8543 slave addresses available. all PCA8543?s with the corresponding a1 and a0 level acknowledge in parallel to the slave address, but all pc a8543 with the alternative a1 and a0 levels ignore the whole i 2 c-bus transfer. after acknowledgement, a contro l byte follows which defines if the next byte is ram or command information. the control byte also de fines if the next byte is a control byte or further ram or command data. in this way it is possible to configure the device and then fill the display ram with little overhead. the display bytes are stored in the display ram at the address specified by the data pointer. the acknowledgement after each byte is made only by the (a0 and a1) addressed PCA8543. after the last display byte, the i 2 c-bus master issues a stop condition (p). alternatively a start may be issued to restart an i 2 c-bus access. if a temperature readout (byte td[7:0]) is made the r/w bit must be logic 1 and then the next data byte following is provided by the PCA8543 as shown in figure 41 . table 34. control byte description bit symbol value description 7co continue bit 0 last control byte 1 control bytes continue 6rs register selection 0 command register 1 data register 5 to 0 - - not relevant fig 40. control byte format fig 41. i 2 c-bus protocol read mode p j o q r w u h o h y d q w & 2 5 6 0 6 % / 6 % d d d $ 6 v o d y h d g g u h v v w h p s h u d w x u h u h d g r x w e \ w h 0 6 % / 6 % $ 3 5 : $ $ d f n q r z o h g j h i u r p 3 & $ d f n q r z o h g j h i u r p p d v w h u free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 47 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 10. internal circuitry 11. safety notes fig 42. device protection diagram $ $ 7 7 & / . 9 ' ' 9 6 6 d d d % 3 w r % 3 6 w r 6 9 / & ' 9 6 6 7 9 / & ' 6 ' $ 6 & / 9 ' ' 9 ' ' 9 6 6 caution this device is sensitive to electrostatic di scharge (esd). observe precautions for handling electrostatic sensitive devices. such precautions are described in the ansi/esd s20.20 , iec/st 61340-5 , jesd625-a or equivalent standards. caution static voltages across the liquid crystal display can build up when the lcd supply voltage (v lcd ) is on while the ic supply voltage (v dd ) is off, or vice versa. this may cause unwanted display artifacts. to av oid such artifacts, v lcd and v dd must be applied or removed together. free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 48 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 12. limiting values [1] pass level; human body model (hbm), according to ref. 7 ? jesd22-a114 ? . [2] pass level; charged-device model (cdm), according to ref. 8 ? jesd22-c101 ? . [3] pass level; latch-up testing according to ref. 9 ? jesd78 ? at maximum ambient temperature (t amb(max) ). [4] according to the store and transport requirements (see ref. 13 ? um10569 ? ) the devices have to be stored at a temperature of +8 ? c to +45 ? c and a humidity of 25 % to 75 %. table 35. limiting values in accordance with the absolute maximum rating system (iec 60134). symbol parameter conditions min max unit v dd1 supply voltage 1 analog and digital ? 0.5 +6.5 v v dd2 supply voltage 2 charge pump ? 0.5 +6.5 v i dd1 supply current 1 analog and digital ? 50 +50 ma i dd2 supply current 2 charge pump ? 50 +50 ma v lcd lcd supply voltage ? 0.5 +10 v i dd(lcd) lcd supply current ? 50 +50 ma v i input voltage on pins clk, sda, scl, a0, a1, t1, t2, t3 ? 0.5 +6.5 v i i input current ? 10 +10 ma v o output voltage on pins s0 to s59, bp0 to bp3 ? 0.5 +10 v on pins sda, clk ? 0.5 +6.5 v i o output current ? 10 +10 ma i ss ground supply current ? 50 +50 ma p tot total power dissipation - 400 mw p/out power dissipation per output -100mw v esd electrostatic discharge voltage hbm [1] - ? 4000 v cdm [2] - ? 1500 v i lu latch-up current [3] -100ma t stg storage temperature [4] ? 65 +150 ?c t amb ambient temperature operating device ? 40 +105 ?c free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 49 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 13. static characteristics table 36. static characteristics v dd1 = 2.5 v to 5.5 v; v dd2 = 2.5 v to 5.5 v; v ss = 0 v; v lcd = 2.5 v to 9.0 v; t amb = ? 40 ? c to +105 ? c; unless otherwise specified. symbol parameter conditions min typ max unit supplies v dd1 supply voltage 1 2.5 - 5.5 v v dd2 supply voltage 2 v dd2 ? v dd1 2.5 - 5.5 v v lcd lcd supply voltage v lcd ? v dd2 [1] 2.5 - 9.0 v ? v lcd lcd voltage variation v dd1 =v dd2 =5.0v; v lcd = 6.99 v [2] [3] ? 0.10 - +0.10 v i dd(pd) power-down mode supply current on pin v dd1 [4] [5] -1.03.0 ? a i dd1 supply current 1 [5] [6] -100200 ? a i dd2 supply current 2 f osc = 9.6 khz charge pump off; external v lcd [5] [6] -0.53.0 ? a charge pump on; internal v lcd [5] [7] -250550 ? a i dd(lcd) lcd supply current external v lcd [5] [8] -125250 ? a i lcd(pd) power-down lcd current external v lcd [4] [5] -1235 ? a r o output resistance of charge pump (driving capabilities) charge pump set to 2 ? v dd2 ; i load = 3 ma (on pin v lcd ) [9] 0.2 0.85 1.6 k ? charge pump set to 3 ? v dd2 ; i load = 2 ma (on pin v lcd ) [10] 2.0 3.2 4.5 k ? t acc temperature accuracy read out temperature error; v dd1 =5.0v t amb = ? 40 ? c to +105 ?c ? 6-+6 ?c t amb =27 ?c ? 4-+4 ?c logic v i input voltage v ss ? 0.5 - v dd + 0.5 v v il low-level input voltage on pins clk, a1, a0 - - 0.3v dd v v ih high-level input voltage on pins clk, a1, a0 0.7v dd -- v v o output voltage ? 0.5 - v dd + 0.5 v v oh high-level output voltage on pin clk 0.8v dd -- v v ol low-level output voltage on pin clk - - 0.2v dd v i oh high-level output current output source current; v oh =4.6v; v dd = 5 v; on pin clk 1-- ma i ol low-level output current output sink current; v ol = 0.4 v; v dd = 5 v; on pin clk 1-- ma v por power-on reset voltage [11] --1.6v i l leakage current v i =v dd or v ss ; on pins clk, a1, a0, t1, t2, t3 [12] -0- ? a free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 50 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump [1] when supplying external v lcd it must be v lcd ? v dd2 . also when using the internal charge pump to generate a certain v lcd , vpr[7:0] must be set to a value that the voltage is higher than v dd2 (see section 8.4.3 on page 28 ). [2] calibrated at testing stage. v lcd temperature compensation is disabled. [3] according to equation 6 on page 28 : v lcd = 133 ? 0.03 + 3 = 6.99 v. [4] display is disabled; i 2 c-bus inactive; temperat ure measurement disabled. [5] the typical value is defined at v dd1 =v dd2 = 5.0 v, v lcd = 7.0 v and 30 ? c. [6] temperature measurement enabled; 1:4 multiplex drive mode; 1 4 bias; display enabled; lcd outputs ar e open circuit; ram is all written with logic 1; inputs at v ss or v dd ; internal clock with the default prescale factor; i 2 c-bus inactive. [7] v dd2 = 5.0 v; charge pump set to 2 ? v dd2 ; vpr[7:0] set for v lcd = 7.0 v; 1:4 multiplex drive mode; 1 4 bias; temperature measurement enabled; display enabled; lcd outputs are open circuit; ram is all written with logic 1; inputs at v ss or v dd ; external clock with 50 % duty factor; i 2 c-bus inactive. [8] external supplied v lcd = 7.0 v; 1:4 multiplex drive mode; 1 4 bias; temperature measurement enabled; display enabled; lcd outputs are open circuit; ram is all written with logic 1; inputs at v ss or v dd ; external clock with 50 % duty factor; i 2 c-bus inactive. [9] v dd2 = 5.0 v; charge pump set to 2 ? v dd2 ; vpr[7:0] set for v lcd = 9.0 v; display disabled; cpf (see table 23 on page 12 ) set logic 0. [10] v dd2 = 4.0 v; charge pump set to 3 ? v dd2 ; vpr[7:0] set for v lcd = 9.0 v; display disabled; cpf (see table 23 on page 12 ) set logic 0. [11] if v dd1 > v por then no reset occurs. [12] in case of an esd event, the value may increase slightly. [13] the i 2 c-bus interface of PCA8543 is 5 v tolerant. [14] variation between any 2 backplanes on a given voltage level; static measured. [15] variation between any 2 segments on a given voltage level; static measured. [16] outputs measured one at a time. i 2 c-bus; pins sda and scl [13] v i input voltage v ss ? 0.5 - 5.5 v v il low-level input voltage pins scl, sda - - 0.3v dd v v ih high-level input voltage pins scl, sda 0.7v dd -- v v o output voltage pins scl, sda ? 0.5 - 5.5 v i ol low-level output current v ol = 0.4 v; v dd = 5 v; on pin sda 3 - - ma i l leakage current v i =v dd or v ss [12] -0- ? a lcd outputs ? v o output voltage variation on pins bp0 to bp3 [14] ? 15 - +15 mv on pins s0 to s59 [15] ? 15 - +15 mv r o output resistance v lcd = 7 v; on pins bp0 to bp3 [16] 0.3 0.8 1.5 k ? v lcd = 7 v; on pins s0 to s59 [16] 0.6 1.5 3 k ? table 36. static characteristics ?continued v dd1 = 2.5 v to 5.5 v; v dd2 = 2.5 v to 5.5 v; v ss = 0 v; v lcd = 2.5 v to 9.0 v; t amb = ? 40 ? c to +105 ? c; unless otherwise specified. symbol parameter conditions min typ max unit free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 51 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump (1) vpr[7:0] = 85h. (2) vpr[7:0] = 64h. (3) vpr[7:0] = a4h. temperature compensation disabled. fig 43. typical v lcd with respect to temperature v dd1 =5.0v. fig 44. typical i dd1 with respect to temperature w h p s h u d w x u h ? & d d q 9 / & ' 9 d d q w h p s h u d w x u h ? & , ' ' ? $ free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 52 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump charge pump set to 2 ? v dd2 ; v lcd = 7.0 v; v dd1 =v dd2 =5.0v. fig 45. typical i dd2 with respect to temperature v lcd = 7.0 v, external supplied; v dd1 =v dd2 = 5.0 v; display enabled, but no display attached. fig 46. typical i lcd with respect to temperature w h p s h u d w x u h ? & d d q , ' ' ? $ d d q w h p s h u d w x u h ? & , / & ' ? $ free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 53 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 14. dynamic characteristics [1] internal calibration made with otp so that the maximum variation is ? 15 % over whole temperature and voltage range. the typical f osc generates a typical frame frequency of 200 hz when t he default frequency division factor is used (see section 8.5.3 on page 36 ). [2] the typical value is defined at v dd1 =v dd2 = 5.0 v and 30 ? c. [3] all timing values are valid within the operating supply voltage and ambient temperature range and are referenced to v il and v ih with an input voltage swing of v ss to v dd . [4] t vd;dat = minimum time for valid sda output following scl low. [5] t vd;ack = time for acknowledgement signal from scl low to sda output low. table 37. dynamic characteristics v dd1 = 2.5 v to 5.5 v; v dd2 = 2.5 v to 5.5 v; v ss = 0 v; v lcd = 2.5 v to 9.0 v; t amb = ? 40 ? c to +105 ? c; unless otherwise specified. symbol parameter conditions min typ max unit f osc oscillator frequency on pin clk; see table 18 on page 10 [1] [2] 8160 9600 11040 hz f clk(ext) external clock frequency 450 - 14500 hz t clk(h) high-level clock time external clock source used 33 - - ? s t clk(l) low-level clock time 33 - - ? s timing characteristics: i 2 c-bus [3] f scl scl frequency - - 400 khz t buf bus free time between a stop and start condition 1.3 - - ? s t hd;sta hold time (repeated) start condition 0.6 - - ? s t su;sta set-up time for a repeated start condition 0.6 - - ? s t vd;dat data valid time [4] --0.9 ? s t vd;ack data valid acknowledge time [5] --0.9 ? s t low low period of the scl clock 1.3 - - ? s t high high period of the scl clock 0.6 - - ? s t f fall time of both sda and scl signals - - 0.3 ? s t r rise time of both sda and scl signals - - 0.3 ? s c b capacitive load for each bus line - - 400 pf t su;dat data set-up time 100 - - ns t hd;dat data hold time 0 - - ns t su;sto set-up time for stop condition 0.6 - - ? s t w(spike) spike pulse width - - 50 ns free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 54 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 15. test information 15.1 quality information this product has been qualified in accordance with the automotive electronics council (aec) standard q100 - failure mechanism based stress test qualification for integrated circuits , and is suitable for use in automotive applications. fig 47. driver timing waveforms fig 48. i 2 c-bus timing waveforms d d d & / . w f o n + w f o n / i f o n 9 ' ' 9 ' ' 6 & / 6 ' $ w + ' 6 7 $ w 6 8 ' $ 7 w + ' ' $ 7 w i w % 8 ) w 6 8 6 7 $ w / 2 : w + , * + w 9 ' $ & . d d d w 6 8 6 7 2 s u r w r f r o 6 7 $ 5 7 f r q g l w l r q 6 e l w 0 6 % $ e l w $ e l w 5 : d f n q r z o h g j h $ 6 7 2 3 f r q g l w l r q 3 i 6 & / w u w 9 ' ' $ 7 free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 55 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 16. package outline fig 49. package outline sot315-1 (lqfp80) of PCA8543ahl 8 1 , 7 $ p d [ $ $ $ e s f ( h + ( / / s = \ z y 5 ( ) ( 5 ( 1 & ( 6 2 8 7 / , 1 ( 9 ( 5 6 , 2 1 ( 8 5 2 3 ( $ 1 3 5 2 - ( & 7 , 2 1 , 6 6 8 ( ' $ 7 ( , ( & - ( ' ( & - ( , 7 $ p p r r ' , 0 ( 1 6 , 2 1 6 p p d u h w k h r u l j l q d o g l p h q v l r q v 1 r w h 3 o d v w l f r u p h w d o s u r w u x v l r q v r i p p p d [ l p x p s h u v l g h d u h q r w l q f o x g h g 6 2 7 ( 0 6 ' + ' ( = ' e s h ( $ $ / s g h w d l o ; / $ % f ' + e s ( + $ y 0 % ' = ' $ = ( h y 0 $ ; \ s l q l q g h [ z 0 z 0 p p v f d o h / 4 ) 3 s o d v w l f o r z s u r i l o h t x d g i o d w s d f n d j h o h d g v e r g \ [ [ p p 6 2 7 free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 56 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 17. soldering of smd packages this text provides a very brief insight into a complex technology. a more in-depth account of soldering ics can be found in application note an10365 ?surface mount reflow soldering description? . 17.1 introduction to soldering soldering is one of the most common methods through which packages are attached to printed circuit boards (pcbs), to form electr ical circuits. the soldered joint provides both the mechanical and the electrical connection. th ere is no single sold ering method that is ideal for all ic packages. wave soldering is often preferred when through-hole and surface mount devices (smds) are mixed on one printed wiring board; however, it is not suitable for fine pitch smds. reflow soldering is ideal for the small pitches and high densities that come with increased miniaturization. 17.2 wave and reflow soldering wave soldering is a joining technology in which the joints are made by solder coming from a standing wave of liquid solder. the wave soldering process is suitable for the following: ? through-hole components ? leaded or leadless smds, which are glued to the surface of the printed circuit board not all smds can be wave soldered. packages with solder balls, and some leadless packages which have solder lands underneath the body, cannot be wave soldered. also, leaded smds with leads having a pitch smaller than ~0.6 mm cannot be wave soldered, due to an increased pr obability of bridging. the reflow soldering process involves applying solder paste to a board, followed by component placement and exposure to a temperature profile. leaded packages, packages with solder balls, and leadless packages are all reflow solderable. key characteristics in both wave and reflow soldering are: ? board specifications, in cluding the board finish , solder masks and vias ? package footprints, including solder thieves and orientation ? the moisture sensitivit y level of the packages ? package placement ? inspection and repair ? lead-free soldering versus snpb soldering 17.3 wave soldering key characteristics in wave soldering are: ? process issues, such as application of adhe sive and flux, clinching of leads, board transport, the solder wave parameters, and the time during which components are exposed to the wave ? solder bath specifications, including temperature and impurities free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 57 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 17.4 reflow soldering key characteristics in reflow soldering are: ? lead-free versus snpb solderi ng; note that a lead-free reflow process usually leads to higher minimum peak temperatures (see figure 50 ) than a snpb process, thus reducing the process window ? solder paste printing issues including smearing, release, and adjusting the process window for a mix of large and small components on one board ? reflow temperature profile; this profile includ es preheat, reflow (in which the board is heated to the peak temperature) and cooling down. it is imperative that the peak temperature is high enough for the solder to make reliable solder joints (a solder paste characteristic). in addition, the peak temperature must be low enough that the packages and/or boards are not damaged. the peak temperature of the package depends on package thickness and volume and is classified in accordance with ta b l e 3 8 and 39 moisture sensitivity precautions, as indicat ed on the packing, must be respected at all times. studies have shown that small packages reach higher temperatures during reflow soldering, see figure 50 . table 38. snpb eutectic process (from j-std-020d) package thickness (mm) package reflow temperature ( ?c) volume (mm 3 ) < 350 ? 350 < 2.5 235 220 ? 2.5 220 220 table 39. lead-free process (from j-std-020d) package thickness (mm) package reflow temperature ( ?c) volume (mm 3 ) < 350 350 to 2000 > 2000 < 1.6 260 260 260 1.6 to 2.5 260 250 245 > 2.5 250 245 245 free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 58 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump for further information on temperature profiles, refer to application note an10365 ?surface mount reflow soldering description? . msl: moisture sensitivity level fig 50. temperature profiles for large and small components 001aac844 temperature time minimum peak temperature = minimum soldering temperature maximum peak temperature = msl limit, damage level peak temperature free datasheet http://www.0pdf.com xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx x x x xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xx xx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxx x x xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxx xxx PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 59 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 18. appendix 18.1 lcd segment driver selection table 40. selection of lcd segment drivers type name number of elements at mux v dd (v) v lcd (v) f fr (hz) v lcd (v) charge pump v lcd (v) temperature compensat. t amb ( ?c) interface package aec- q100 1:1 1:2 1:3 1:4 1:6 1:8 1:9 pca8561ahn 18365472---1.8to5.51.8to5.532 to 256 [1] nn ? 40 to 105 i 2 chvqfn32y pca8561bhn 18365472---1.8to5.51.8to5.532 to 256 [1] nn ? 40 to 105 spi hvqfn32 y pcf8566ts 24487296---2.5to62.5to669 n n ? 40 to 85 i 2 c vso40 n pcf85162t 32 64 96 128 ---1.8to5.52.5to6.582 n n ? 40 to 85 i 2 ctssop48n pca85162t 326496128---1.8to5.52.5to8110 n n ? 40 to 95 i 2 ctssop48y pca85262att326496128---1.8to5.52.5to8200 n n ? 40 to 105 i 2 ctssop48y pcf8551att 3672108144---1.8to5.51.8to5.532 to 128 [1] nn ? 40 to 85 i 2 ctssop48n pcf8551btt 3672108144---1.8to5.51.8to5.532 to 128 [1] nn ? 40 to 85 spi tssop48 n pca8551att 3672108144---1.8to5.51.8to5.532 to 256 [1] nn ? 40 to 105 i 2 ctssop48y pca8551btt 3672108144---1.8to5.51.8to5.532 to 256 [1] nn ? 40 to 105 spi tssop48 y pcf85176t 40 80 120 160 ---1.8to5.52.5to6.582 n n ? 40 to 85 i 2 ctssop56n pca85176t 4080120160---1.8to5.52.5to8110 n n ? 40 to 95 i 2 ctssop56y pca85276att4080120160---1.8to5.52.5to8200 n n ? 40 to 105 i 2 ctssop56y pcf85176h 40 80 120 160 ---1.8to5.52.5to6.582 n n ? 40 to 85 i 2 ctqfp64n pca85176h 4080120160---1.8to5.52.5to882 n n ? 40 to 95 i 2 ctqfp64y pcf8553att 4080120160---1.8to5.51.8to5.532 to 128 [1] nn ? 40 to 85 i 2 ctssop56n pcf8553btt 4080120160---1.8to5.51.8to5.532 to 128 [1] nn ? 40 to 85 spi tssop56 n pca8553att 4080120160---1.8to5.51.8to5.532 to 256 [1] nn ? 40 to 105 i 2 ctssop56y pca8553btt 4080120160---1.8to5.51.8to5.532 to 256 [1] nn ? 40 to 105 spi tssop56 y pca8546att ---176---1.8to5.52.5to960to300 [1] nn ? 40 to 95 i 2 ctssop56y pca8546btt ---176---1.8to5.52.5to960to300 [1] nn ? 40 to 95 spi tssop56 y pca8547aht 4488-176---1.8to5.52.5to960to300 [1] yy [3] ? 40 to 95 i 2 ctqfp64y pca8547bht 4488-176---1.8to5.52.5to960to300 [1] yy [3] ? 40 to 95 spi tqfp64 y pcf85134hl 60 120 180 240 ---1.8to5.52.5to6.582 n n ? 40 to 85 i 2 clqfp80n pca85134h 60120180240---1.8to5.52.5to882 n n ? 40 to 95 i 2 clqfp80y free datasheet http://www.0pdf.com xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx x x x xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xx xx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxx x x xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxx xxx PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 60 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump [1] can be selected by command. [2] can be selected by pin configuration. PCA8543ahl 60120-240---2.5to5.52.5to960to300 [1] yy ? 40 to 105 i 2 clqfp80y pcf8545att - - - 176 252 320 - 1.8 to 5.5 2.5 to 5.5 60 to 300 [1] nn ? 40 to 85 i 2 ctssop56n pcf8545btt - - - 176 252 320 - 1.8 to 5.5 2.5 to 5.5 60 to 300 [1] nn ? 40 to 85 spi tssop56 n pcf8536at [4] - - - 176 252 320 - 1.8to5.5 2.5to9 60to300 [1] nn ? 40 to 85 i 2 ctssop56n pcf8536bt [4] - - - 176 252 320 - 1.8to5.5 2.5to9 60to300 [1] nn ? 40 to 85 spi tssop56 n pca8536at [4] - - - 176 252 320 - 1.8to5.5 2.5to9 60to300 [1] nn ? 40 to 95 i 2 ctssop56y pca8536bt [4] - - - 176 252 320 - 1.8to5.5 2.5to9 60to300 [1] nn ? 40 to 95 spi tssop56 y pcf8537ah 44 88 - 176 276 352 - 1.8 to 5.5 2.5 to 9 60 to 300 [1] yy [3] ? 40 to 85 i 2 ctqfp64n pcf8537bh 44 88 - 176 276 352 - 1.8 to 5.5 2.5 to 9 60 to 300 [1] yy [3] ? 40 to 85 spi tqfp64 n pca8537ah 44 88 - 176 276 352 - 1.8 to 5.5 2.5 to 9 60 to 300 [1] yy [3] ? 40 to 95 i 2 ctqfp64y pca8537bh 44 88 - 176 276 352 - 1.8 to 5.5 2.5 to 9 60 to 300 [1] yy [3] ? 40 to 95 spi tqfp64 y pca9620h 60 120 - 240 320 480 - 2.5 to 5.5 2.5 to 9 60 to 300 [1] yy [3] ? 40 to 105 i 2 clqfp80y pca9620u 60 120 - 240 320 480 - 2.5 to 5.5 2.5 to 9 60 to 300 [1] yy [3] ? 40 to 105 i 2 c bare die y pcf8552dug 3672108144---1.8to5.51.8to5.532 to 128 [1] nn ? 40 to 85 i 2 c, spi bare die n pca8552dug 3672108144---1.8to5.51.8to5.532 to 256 [1] nn ? 40 to 105 i 2 c, spi bare die y pcf8576du 4080120160---1.8to5.52.5to6.577 n n ? 40 to 85 i 2 c bare die n pcf8576eug 4080120160---1.8to5.52.5to6.577 n n ? 40 to 85 i 2 c bare die n pca8576fug 4080120160---1.8to5.52.5to8200 n n ? 40 to 105 i 2 c bare die y pcf85133u 80 160 240 320 ---1.8to5.52.5to6.582, 110 [2] nn ? 40 to 85 i 2 c bare die n pca85133u 80160240320---1.8to5.52.5to882, 110 [2] nn ? 40 to 95 i 2 c bare die y pca85233u 80160240320---1.8to5.52.5to8 150, 220 [2] nn ? 40 to 105 i 2 c bare die y pca8530dug 102204-408---2.5to5.54to1245to300 [1] yy [3] ? 40 to 105 i 2 c, spi bare die y pcf85132u 160 320 480 640 ---1.8to5.51.8to860to90 [1] nn ? 40 to 85 i 2 c bare die n pca85132u 160320480640---1.8to5.51.8to860to90 [1] nn ? 40 to 95 i 2 c bare die y pca85232u 160320480640---1.8to5.51.8to8117to176 [1] nn ? 40 to 95 i 2 c bare die y pcf8538ug 102 204 - 408 612 816 918 2.5 to 5.5 4 to 12 45 to 300 [1] yy [3] ? 40 to 85 i 2 c, spi [2] bare die n pca8538ug 102 204 - 408 612 816 918 2.5 to 5.5 4 to 12 45 to 300 [1] yy [3] ? 40 to 105 i 2 c, spi [2] bare die y table 40. selection of lcd segment drivers ?continued type name number of elements at mux v dd (v) v lcd (v) f fr (hz) v lcd (v) charge pump v lcd (v) temperature compensat. t amb ( ?c) interface package aec- q100 1:1 1:2 1:3 1:4 1:6 1:8 1:9 free datasheet http://www.0pdf.com xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx x x x xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xx xx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxx x x xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxx xxx PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 61 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump [3] extra feature: temperature sensor. [4] extra feature: 6 pwm channels. free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 62 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 19. abbreviations table 41. abbreviations acronym description aec automotive electronics council cdm charged-device model dc direct current eprom erasable programmable read-only memory esd electrostatic discharge hbm human body model i 2 c inter-integrated circuit bus ic integrated circuit lcd liquid crystal display lsb least significant bit msb most significant bit msl moisture sensitivity level mux multiplexer otp one time programmable pcb printed-circuit board por power-on reset rc resistance-capacitance ram random access memory rms root mean square scl serial clock line sda serial data line smd surface mount device free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 63 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 20. references [1] an10365 ? surface mount reflow soldering description [2] an10853 ? esd and emc sensitivity of ic [3] an11267 ? emc and system level esd design guidelines for lcd drivers [4] iec 60134 ? rating systems for electronic tu bes and valves and analogous semiconductor devices [5] iec 61340-5 ? protection of electronic devices from electrostatic phenomena [6] ipc/jedec j-std-020d ? moisture/reflow sensitivity classification for nonhermetic solid state surface mount devices [7] jesd22-a114 ? electrostatic discharge (esd) se nsitivity testing human body model (hbm) [8] jesd22-c101 ? field-induced charged-device model test method for electrostatic-discharge-withstand thresh olds of microelectronic components [9] jesd78 ? ic latch-up test [10] jesd625-a ? requirements for handling elec trostatic-discharge-sensitive (esds) devices [11] snv-fa-01-02 ? marking formats integrated circuits [12] um10204 ? i 2 c-bus specification and user manual [13] um10569 ? store and transport requirements free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 64 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 21. revision history table 42. revision history document id release date data sheet status change notice supersedes PCA8543 v.1 20140121 product data sheet - - free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 65 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 22. legal information 22.1 data sheet status [1] please consult the most recently issued document before initiating or completing a design. [2] the term ?short data sheet? is explained in section ?definitions?. [3] the product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple device s. the latest product status information is available on the internet at url http://www.nxp.com . 22.2 definitions draft ? the document is a draft versi on only. the content is still under internal review and subject to formal approval, which may result in modifications or additions. nxp semiconductors does not give any representations or warranties as to the accuracy or completeness of information included herein and shall hav e no liability for the consequences of use of such information. short data sheet ? a short data sheet is an extract from a full data sheet with the same product type number(s) and title. a short data sheet is intended for quick reference only and should not be relied upon to contain detailed and full information. for detailed and full information see the relevant full data sheet, which is available on request vi a the local nxp semiconductors sales office. in case of any inconsistency or conflict with the short data sheet, the full data sheet shall prevail. product specification ? the information and data provided in a product data sheet shall define the specification of the product as agreed between nxp semiconductors and its customer , unless nxp semiconductors and customer have explicitly agreed otherwis e in writing. in no event however, shall an agreement be valid in which the nxp semiconductors product is deemed to offer functions and qualities beyond those described in the product data sheet. 22.3 disclaimers limited warranty and liability ? information in this document is believed to be accurate and reliable. however, nxp semiconductors does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such info rmation. nxp semiconductors takes no responsibility for the content in this document if provided by an information source outside of nxp semiconductors. in no event shall nxp semiconductors be liable for any indirect, incidental, punitive, special or consequential damages (including - without limitation - lost profits, lost savings, business interruption, costs related to the removal or replacement of any products or rework charges) whether or not such damages are based on tort (including negligence), warranty, breach of contract or any other legal theory. notwithstanding any damages that customer might incur for any reason whatsoever, nxp semiconductors? aggregate and cumulative liability towards customer for the products described herein shall be limited in accordance with the terms and conditions of commercial sale of nxp semiconductors. right to make changes ? nxp semiconductors reserves the right to make changes to information published in this document, including without limitation specifications and product descriptions, at any time and without notice. this document supersedes and replaces all information supplied prior to the publication hereof. suitability for use in automotive applications ? this nxp semiconductors product has been qualified for use in automotive applications. unless otherwise agreed in writing, the product is not designed, authorized or warranted to be suitable for use in life support, life-critical or safety-critical systems or equipment, nor in applications where failure or malfunction of an nxp semiconductors product can reasonably be expected to result in personal injury, death or severe property or environmental damage. nxp semiconductors and its suppliers accept no liability for inclusion and/or use of nxp semiconducto rs products in such equipment or applications and therefore such inclusion and/or use is at the customer's own risk. applications ? applications that are described herein for any of these products are for illustrative purpos es only. nxp semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. customers are responsible for the design and operation of their applications and products using nxp semiconductors products, and nxp semiconductors accepts no liability for any assistance with applications or customer product design. it is customer?s sole responsibility to determine whether the nxp semiconductors product is suitable and fit for the customer?s applications and products planned, as well as fo r the planned application and use of customer?s third party customer(s). customers should provide appropriate design and operating safeguards to minimize the risks associated with their applications and products. nxp semiconductors does not accept any liability related to any default, damage, costs or problem which is based on any weakness or default in the customer?s applications or products, or the application or use by customer?s third party customer(s). customer is responsible for doing all necessary testing for the customer?s applic ations and products using nxp semiconductors products in order to av oid a default of the applications and the products or of the application or use by customer?s third party customer(s). nxp does not accept any liability in this respect. limiting values ? stress above one or more limiting values (as defined in the absolute maximum ratings system of iec 60134) will cause permanent damage to the device. limiting values are stress ratings only and (proper) operation of the device at these or any other conditions above those given in the recommended operating conditions section (if present) or the characteristics sections of this document is not warranted. constant or repeated exposure to limiting values will permanently and irreversibly affect the quality and reliability of the device. terms and conditions of commercial sale ? nxp semiconductors products are sold subject to the gener al terms and conditions of commercial sale, as published at http://www.nxp.com/profile/terms , unless otherwise agreed in a valid written individual agreement. in case an individual agreement is concluded only the terms and conditions of the respective agreement shall apply. nxp semiconductors hereby expressly objects to applying the customer?s general terms and conditions with regard to the purchase of nxp semiconducto rs products by customer. document status [1] [2] product status [3] definition objective [short] data sheet development this document contains data from the objecti ve specification for product development. preliminary [short] data sheet qualification this document contains data from the preliminary specification. product [short] data sheet production this document contains the product specification. free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 66 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump no offer to sell or license ? nothing in this document may be interpreted or construed as an offer to sell products t hat is open for acceptance or the grant, conveyance or implication of any licens e under any copyrights, patents or other industrial or intellectual property rights. export control ? this document as well as the item(s) described herein may be subject to export control regu lations. export might require a prior authorization from competent authorities. translations ? a non-english (translated) version of a document is for reference only. the english version shall prevail in case of any discrepancy between the translated and english versions. 22.4 trademarks notice: all referenced brands, produc t names, service names and trademarks are the property of their respective owners. i 2 c-bus ? logo is a trademark of nxp b.v. 23. contact information for more information, please visit: http://www.nxp.com for sales office addresses, please send an email to: salesaddresses@nxp.com free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 67 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 24. tables table 1. ordering information . . . . . . . . . . . . . . . . . . . . .2 table 2. ordering options . . . . . . . . . . . . . . . . . . . . . . . . .2 table 3. marking codes . . . . . . . . . . . . . . . . . . . . . . . . . .2 table 4. pin description . . . . . . . . . . . . . . . . . . . . . . . . . .5 table 5. commands of PCA8543 . . . . . . . . . . . . . . . . . .6 table 6. initialize - initialize command bit description . . .7 table 7. otp-refresh - otp-refresh command bit description . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 table 8. oscillator-ctrl - oscillator control command bit description . . . . . . . . . . . . . . . . . . . . . . . . . .7 table 9. charge-pump-ctrl - charge pump control command bit description . . . . . . . . . . . . . . . . . .8 table 10. temp-msr-ctrl - temperature measurement control command bit descripti on . . . . . . . . . . . .8 table 11. set-vpr-msb - set vpr msb command bit description . . . . . . . . . . . . . . . . . . . . . . . . . .8 table 12. set-vpr-lsb - set vpr lsb command bit description . . . . . . . . . . . . . . . . . . . . . . . . . .9 table 13. display-enable - display enable command bit description . . . . . . . . . . . . . . . . . . . . . . . . . .9 table 14. set-mux-mode - set multiplex drive mode command bit description . . . . . . . . . . . . . . . . . .9 table 15. set-bias-mode - set bias mode command bit description . . . . . . . . . . . . . . . . . . . . . . . . . .9 table 16. load-data-pointer - load data pointer command bit description . . . . . . . . . . . . . . . . . .9 table 17. frame frequency - frame frequency and output clock frequency command bit description . . . .10 table 18. frame frequency values . . . . . . . . . . . . . . . . .10 table 19. input-bank-select - input bank select command bit description . . . . . . . . . . . . . . . . . 11 table 20. output-bank-sele ct - output bank select command bit description . . . . . . . . . . . . . . . . . 11 table 21. write-ram-data - write ram data command bit description [1] . . . . . . . . . . . . . . . . . . . . . . . . 11 table 22. temp-read - temperature readout command bit description [1] . . . . . . . . . . . . . . . . . . . . . . . . 11 table 23. invmode_cpf_ctrl - inversion mode and charge pump frequency prescaler command bit description . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 table 24. temp-filter - digital temperature filter command bit description . . . . . . . . . . . . . . . . . . . . . . . . .12 table 25. selection of possible display configurations . . .13 table 26. reset states . . . . . . . . . . . . . . . . . . . . . . . . . . .15 table 27. lcd drive modes: su mmary of characteristics .22 table 28. parameters of v lcd generation . . . . . . . . . . . .28 table 29. temperature measurement update rate . . . . .32 table 30. temperature coefficients. . . . . . . . . . . . . . . . . .34 table 31. calculation of the temperature compensated voltage v t . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35 table 32. mapping of output pins and corresponding output signals with respect to the multiplex driving mode . . . . . . . . . . . . . . . . . . . . . . . . . .36 table 33. i 2 c slave address . . . . . . . . . . . . . . . . . . . . . . .45 table 34. control byte description . . . . . . . . . . . . . . . . . .46 table 35. limiting values . . . . . . . . . . . . . . . . . . . . . . . . .48 table 36. static characteristics . . . . . . . . . . . . . . . . . . . . 49 table 37. dynamic characteristics . . . . . . . . . . . . . . . . . 53 table 38. snpb eutectic process (from j-std-020d) . . . 57 table 39. lead-free process (from j-std-020d) . . . . . . 57 table 40. selection of lcd segment drivers . . . . . . . . . 59 table 41. abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . 62 table 42. revision history . . . . . . . . . . . . . . . . . . . . . . . . 64 free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 68 of 70 nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 25. figures fig 1. block diagram of PCA8543 . . . . . . . . . . . . . . . . . .3 fig 2. pin configuration for lqfp80 (PCA8543ahl). . . .4 fig 3. example of displays suitable for PCA8543 . . . . .13 fig 4. typical system configurat ion when using the internal v lcd generation . . . . . . . . . . . . . . . . . . . . . . . . . .14 fig 5. typical system configuration when using an external v lcd . . . . . . . . . . . . . . . . . . . . . . . . .14 fig 6. recommended start-up sequence when using the internal charge pump and the internal clock signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 fig 7. recommended start-up sequence when using an external supplied v lcd and the internal clock signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 fig 8. recommended start-up sequence when using the internal charge pump and an external clock signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 fig 9. recommended start-up sequence when using an external supplied v lcd and an external clock signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 fig 10. recommended power-down sequence for minimum power-down current when using the internal charge pump and the internal clock signal . . . . . . . . . . .19 fig 11. recommended power-down sequence when using an external supplied v lcd and the internal clock signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 fig 12. recommended power-down sequence when using the internal charge pump and an external clock signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 fig 13. recommended power-down sequence when using an external supplied v lcd and an external clock signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 fig 14. electro-optical characte ristic: relative transmission curve of the liquid. . . . . . . . . . . . . . . . . . . . . . . . .23 fig 15. static drive mode waveforms (line inversion mode) . . . . . . . . . . . . . . . . . . . . . .24 fig 16. waveforms for the 1:2 multiplex drive mode with 1 2 bias (line inversion mode) . . . . . . . . . . . .25 fig 17. waveforms for the 1:2 multiplex drive mode with 1 3 bias (line inversion mode) . . . . . . . . . . . .26 fig 18. waveforms for the 1:4 multiplex drive mode with 1 3 bias (line inversion mode) . . . . . . . . . . . .27 fig 19. v lcd generation including temperature compensation . . . . . . . . . . . . . . . . . . . . . . . . . . .28 fig 20. v lcd programming of PCA8543 (assuming vt[7:0] = 0h) . . . . . . . . . . . . . . . . . . . . . . . . . . . .29 fig 21. charge pump model (used to characterize the driving strength) . . . . . . . . . . . . . . . . . . . . . . . . . .30 fig 22. power efficiency of the charge pump. . . . . . . . . .31 fig 23. temperature measurement block with digital temperature filter . . . . . . . . . . . . . . . . . . . . . . . . .32 fig 24. temperature measurement delay . . . . . . . . . . . .33 fig 25. example of segmented temperature coefficients.34 fig 26. display ram bitmap . . . . . . . . . . . . . . . . . . . . . .38 fig 27. display ram filling order in static drive mode . . .39 fig 28. discarded bits and data pointer wrap around at the end of data transmission . . . . . . . . . . . . . . . . . . .39 fig 29. display ram filling order in 1:2 multiplex drive mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 fig 30. data pointer wrap around in 1:2 multiplex drive mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 fig 31. display ram filling order in 1:4 multiplex drive mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 fig 32. data pointer wrap around in 1:4 multiplex drive mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 fig 33. example of bank selection in 1:4 multiplex mode 42 fig 34. example of the input-bank-select and the output-bank-select command with multiplex drive mode 1:4 . . . . . . . . . . . . . . . . . . . . . . . . . . 42 fig 35. bit transfer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 fig 36. definition of start and stop conditions . . . . . 43 fig 37. system configuration. . . . . . . . . . . . . . . . . . . . . . 44 fig 38. acknowledgement on the i 2 c-bus. . . . . . . . . . . . 44 fig 39. i 2 c-bus protocol write mode . . . . . . . . . . . . . . . . 45 fig 40. control byte format . . . . . . . . . . . . . . . . . . . . . . . 46 fig 41. i 2 c-bus protocol read mode . . . . . . . . . . . . . . . . 46 fig 42. device protection diagram . . . . . . . . . . . . . . . . . 47 fig 43. typical v lcd with respect to temperature . . . . . . 51 fig 44. typical i dd1 with respect to temperature . . . . . . . 51 fig 45. typical i dd2 with respect to temperature . . . . . . . 52 fig 46. typical i lcd with respect to temperature . . . . . . . 52 fig 47. driver timing waveforms . . . . . . . . . . . . . . . . . . . 54 fig 48. i 2 c-bus timing waveforms . . . . . . . . . . . . . . . . . . 54 fig 49. package outline sot315-1 (lqfp80) of PCA8543ahl . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 fig 50. temperature profiles for large and small components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 free datasheet http://www.0pdf.com PCA8543 all information provided in this document is subject to legal disclaimers. ? nxp b.v. 2014. all rights reserved. product data sheet rev. 1 ? 21 january 2014 69 of 70 continued >> nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump 26. contents 1 general description . . . . . . . . . . . . . . . . . . . . . . 1 2 features and benefits . . . . . . . . . . . . . . . . . . . . 1 3 applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 4 ordering information . . . . . . . . . . . . . . . . . . . . . 2 4.1 ordering options . . . . . . . . . . . . . . . . . . . . . . . . 2 5 marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 6 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3 7 pinning information . . . . . . . . . . . . . . . . . . . . . . 4 7.1 pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 7.2 pin description . . . . . . . . . . . . . . . . . . . . . . . . . 5 8 functional description . . . . . . . . . . . . . . . . . . . 6 8.1 commands of PCA8543 . . . . . . . . . . . . . . . . . . 6 8.1.1 command: initialize . . . . . . . . . . . . . . . . . . . . . 7 8.1.2 command: otp-refresh . . . . . . . . . . . . . . . . . . 7 8.1.3 command: oscillator-ctrl . . . . . . . . . . . . . . . . . . 7 8.1.4 command: charge-pump-ctrl . . . . . . . . . . . . . . 8 8.1.5 command: temp-msr-ctrl . . . . . . . . . . . . . . . . . 8 8.1.6 command: set-vpr-msb and set-vpr-lsb . . 8 8.1.7 command: display-enable . . . . . . . . . . . . . . . . 9 8.1.8 command: set-mux-mode . . . . . . . . . . . . . . . . 9 8.1.9 command: set-bias-mode . . . . . . . . . . . . . . . . 9 8.1.10 command: load-data-pointer . . . . . . . . . . . . . . 9 8.1.11 command: frame-frequency . . . . . . . . . . . . . . 10 8.1.12 bank select commands . . . . . . . . . . . . . . . . . 10 8.1.12.1 command: input-bank-select . . . . . . . . . . . . . 11 8.1.12.2 command: output-bank-select . . . . . . . . . . . . 11 8.1.13 command: write-ram-data . . . . . . . . . . . . . . 11 8.1.14 command: temp-read. . . . . . . . . . . . . . . . . . . 11 8.1.15 command: invmode_cpf_ctrl . . . . . . . . . . . . 12 8.1.16 command: temp-filter . . . . . . . . . . . . . . . . . . . 12 8.2 possible display configurations . . . . . . . . . . . 13 8.3 start-up and shut-down. . . . . . . . . . . . . . . . . . 15 8.3.1 power-on reset (por) . . . . . . . . . . . . . . . . . 15 8.3.2 recommended start-up sequences . . . . . . . . 17 8.3.3 recommended power-down sequences . . . . 19 8.4 lcd voltage . . . . . . . . . . . . . . . . . . . . . . . . . . 21 8.4.1 lcd voltage selector . . . . . . . . . . . . . . . . . . . 21 8.4.1.1 electro-optical performance . . . . . . . . . . . . . . 23 8.4.2 lcd drive mode waveforms . . . . . . . . . . . . . . 24 8.4.2.1 static drive mode . . . . . . . . . . . . . . . . . . . . . . 24 8.4.2.2 1:2 multiplex drive mode. . . . . . . . . . . . . . . . . 25 8.4.2.3 1:4 multiplex drive mode. . . . . . . . . . . . . . . . . 27 8.4.3 v lcd generation . . . . . . . . . . . . . . . . . . . . . . . 28 8.4.4 external v lcd supply . . . . . . . . . . . . . . . . . . . 29 8.4.5 charge pump driving capability . . . . . . . . . . . 30 8.4.6 charge pump frequency settings and power efficiency . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 8.4.7 temperature readout . . . . . . . . . . . . . . . . . . . 32 8.4.8 temperature compensation of v lcd . . . . . . . . 33 8.5 oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 8.5.1 internal oscillator . . . . . . . . . . . . . . . . . . . . . . 35 8.5.2 external clock. . . . . . . . . . . . . . . . . . . . . . . . . 35 8.5.3 timing and frame frequency . . . . . . . . . . . . . 36 8.6 backplane outputs . . . . . . . . . . . . . . . . . . . . . 36 8.7 segment outputs . . . . . . . . . . . . . . . . . . . . . . 37 8.8 display register . . . . . . . . . . . . . . . . . . . . . . . 37 8.9 display ram . . . . . . . . . . . . . . . . . . . . . . . . . 37 8.9.1 data pointer . . . . . . . . . . . . . . . . . . . . . . . . . . 38 8.9.1.1 ram filling in static drive mode . . . . . . . . . . . 39 8.9.1.2 ram filling in 1:2 multiplex drive mode . . . . . 39 8.9.1.3 ram filling in 1:4 multiplex drive mode . . . . . 40 8.9.2 bank selection . . . . . . . . . . . . . . . . . . . . . . . . 41 8.9.2.1 input-bank-select . . . . . . . . . . . . . . . . . . . . . . 42 8.9.2.2 output-bank-select. . . . . . . . . . . . . . . . . . . . . 42 9 i 2 c-bus interface characteristics . . . . . . . . . . 43 9.1 bit transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 9.2 start and stop conditions. . . . . . . . . . . . . 43 9.3 system configuration . . . . . . . . . . . . . . . . . . . 43 9.4 acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . 44 9.5 i 2 c-bus controller . . . . . . . . . . . . . . . . . . . . . . 45 9.6 input filters . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 9.7 i 2 c-bus slave address . . . . . . . . . . . . . . . . . . 45 9.8 i 2 c-bus protocol . . . . . . . . . . . . . . . . . . . . . . . 45 10 internal circuitry . . . . . . . . . . . . . . . . . . . . . . . 47 11 safety notes. . . . . . . . . . . . . . . . . . . . . . . . . . . 47 12 limiting values . . . . . . . . . . . . . . . . . . . . . . . . 48 13 static characteristics . . . . . . . . . . . . . . . . . . . 49 14 dynamic characteristics. . . . . . . . . . . . . . . . . 53 15 test information . . . . . . . . . . . . . . . . . . . . . . . 54 15.1 quality information . . . . . . . . . . . . . . . . . . . . . 54 16 package outline. . . . . . . . . . . . . . . . . . . . . . . . 55 17 soldering of smd packages . . . . . . . . . . . . . . 56 17.1 introduction to soldering. . . . . . . . . . . . . . . . . 56 17.2 wave and reflow soldering. . . . . . . . . . . . . . . 56 17.3 wave soldering . . . . . . . . . . . . . . . . . . . . . . . 56 17.4 reflow soldering . . . . . . . . . . . . . . . . . . . . . . 57 18 appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 18.1 lcd segment driver selection . . . . . . . . . . . . 59 19 abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . 62 20 references. . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 free datasheet http://www.0pdf.com nxp semiconductors PCA8543 4 x 60 automotive lcd segment driver with integrated charge pump ? nxp b.v. 2014. all rights reserved. for more information, please visit: http://www.nxp.com for sales office addresses, please se nd an email to: salesaddresses@nxp.com date of release: 21 january 2014 document identifier: PCA8543 please be aware that important notices concerning this document and the product(s) described herein, have been included in section ?legal information?. 21 revision history . . . . . . . . . . . . . . . . . . . . . . . . 64 22 legal information. . . . . . . . . . . . . . . . . . . . . . . 65 22.1 data sheet status . . . . . . . . . . . . . . . . . . . . . . 65 22.2 definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 22.3 disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 22.4 trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 66 23 contact information. . . . . . . . . . . . . . . . . . . . . 66 24 tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 25 figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 26 contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 free datasheet http://www.0pdf.com |
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