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url: www.topwaydisplay.com www.topwaysz.com document name: LM6023A-manual-rev0.3.doc page: 1 of 13 LM6023A lcd module user manual shenzhen topway technology co., ltd. rev. descriptions release date 0.1 prelimiay release 2003-06-25 0.2 typing correction section 4.5.1 - power control command, 20h ? 2fh section 3.2 - applicable pin, abl ? a 2004-03-26 0.3 typing correction on bias setting 2007-11-07
topway lcd module user manual LM6023A url: www.topwaydisplay.com www.topwaysz.com document name: LM6023A-manual-rev0.3.doc page: 2 of 13 table of content 1. basic specifications........................................................................................................... ..... 3 1.1 display spec ificat ions ......................................................................................................... ................................... 3 1.2 mechanical sp ecificat ions...................................................................................................... ................................ 3 1.3 block di agram .................................................................................................................. ...................................... 3 1.4 terminal f uncti ons............................................................................................................. .................................... 4 2. absolute maximum ratings.................................................................................................... 5 3. electrical characteristics..................................................................................................... ... 5 3.1 dc characte ristics ............................................................................................................. .................................... 5 3.2 led backlight circuit characte ristics.......................................................................................... ........................... 5 3.3 ac characte ristics ............................................................................................................. .................................... 6 4. function specifications ........................................................................................................ .. 9 4.1 basic se tting .................................................................................................................. ........................................ 9 4.2 resetting the lcd mo dule ....................................................................................................... .............................. 9 4.3 display memory map ............................................................................................................. ................................ 9 4.4 display comm ands ............................................................................................................... ............................... 10 4.5 basic operating s equence (exa mple)............................................................................................. ..................... 11 5. design and handling precaution ......................................................................................... 13
topway lcd module user manual LM6023A url: www.topwaydisplay.com www.topwaysz.com document name: LM6023A-manual-rev0.3.doc page: 3 of 13 1. basic specifications 1.1 display specifications 1) lcd display mode : stn, positive, transflective 2) display color : display data = ?1? : deep blue (*1) : display data = ?0? : light gray (*2) 3) viewing angle : 6h 4) driving method : 1/65 duty, 1/8 bias 5) back light : white led backlight note: *1. color tone may slightly change by temperature and driving condition. *2. the color is defined as the inactive / background color 1.2 mechanical specifications 1) outline dimension : 113.0 x 65.0 x 15.3max (see attached outline drawing for details) 1.3 block diagram lcd panel 128 x 64 pixels s1d15300 series or equivalent /res, a0, /wr, /rd vdd seg0 | seg127 s1d16700 series or equivalent com0 | com63 d0 ? d7 p/s, c86 vss /cs1, cs2 led backlight circuit a k
topway lcd module user manual LM6023A url: www.topwaydisplay.com www.topwaysz.com document name: LM6023A-manual-rev0.3.doc page: 4 of 13 1.4 terminal functions pin no. pin name i/o descriptions 1 vss supply 0v supply, ground (0v) 2 vdd supply positive power supply 3 /res input reset signal pin /res=low: initialization is executed /res=high: normal 4 p/s input serial / parallel interface select pin. p/s=high: parallel interface selected p/s=low: serial interface selected p/s chip select data / command data read / write serial clock high /cs1, cs2 a0 d0-d7 /rd, /wr - low /cs1, cs2 a0 si (d7) write only scl (d6) in serial interface mode: - no data can be read from ram - d0 to d5 are hz - /rd and /wr must be fixed high or low 5 6 /cs1 cs2 input chip select inputs /cs1=low, cs2=high: data io is enabled /cs1=high, cs2=low: data io is disabled, d0 - d7 will be ?hz? 7 c86 input microprocessor interface select pin. c86=high: 6800 series microprocessor interface c86=low: 8080 series microprocessor interface 8 a0 input control / display data flag input. a0=high: data on d0 to d7 is display data a0=low: data on d0 to d7 is control data 9 /wr(r/w) input in 8080 interface mode: write enable input, active low in 6800 interface mode: r/w=high: read mode selected r/w=low: write mode selected 10 /rd(e) input in 8080 interface mode: read enable input, active low in 6800 interface mode: enable clock signal, active high 11?18 d0 ?d7 (si),(scl) i/o 8-bit bi-directional data bus in parallel interface mode: 8-bit data i/o in serial interface mode: d7=si(serial data input), d6=scl(serial clock input) 19 a supply backlight positive supply 20 k supply backlight negative supply
topway lcd module user manual LM6023A url: www.topwaydisplay.com www.topwaysz.com document name: LM6023A-manual-rev0.3.doc page: 5 of 13 2. absolute maximum ratings items symbol min. max. unit condition supply voltage v dd 0 4.0 v v ss = 0v input voltage v in 0 v dd v v ss = 0v operating temperature t op -20 70 c no condensation storage temperature t st -20 80 c no condensation cautions: any stresses exceeding the absolute maximum ratings may cause substantial damage to the device. functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability. 3. electrical characteristics 3.1 dc characteristics v ss =0v, v dd =3.0v, t op =25 c items symbol min. typ . max. unit condition / application pin operating voltage v dd 2.8 3.0 3.2 v vdd input high voltage v ih 0.9xv dd - v dd v input low voltage v il 0 - 0.1xv dd v /res,p/s,/cs1,cs2,c86, a0,/wr,/rd,d0~d7 output high voltage v oh 0.7xv dd - v dd v i oh =-0.3ma, d0~d7 output low voltage v ol 0 - 0.3xv dd v i ol =0.3ma, d0~d7 operating current i dd - 0.4 1.5 ma vdd, vss sleep mode current i dds - - 2 a vdd, vss 3.2 led backlight circuit characteristics v k =0v, if a =80ma, t op =25 c items symbol min. typ. max. unit applicable pin forward voltage vf a - 3.7 - v a forward current if a - - 120 ma a k a
topway lcd module user manual LM6023A url: www.topwaydisplay.com www.topwaysz.com document name: LM6023A-manual-rev0.3.doc page: 6 of 13 3.3 ac characteristics 3.3.1 8080 mode system bus timing v ss =0v, v dd =3v, t op =25 c item symbol min. typ. max. unit address hold time (a0) tah8 38 - - ns address setup time (a0) taw8 30 - - ns system cycle time tcyc8 900 - - ns control low pulse width (/wr) tcclw 120 - - ns control low pulse width (/rd) tcclr 280 - - ns control high pulse width (/wr) tcchw 400 - - ns control high pulse width (/rd) tcchr 280 - - ns data setup time tds8 80 - - ns data hold time tdh8 30 - - ns /rd access time (*2) tacc8 - - 280 ns output disable time (*2) tch8 - - 200 ns note: *1. input signal rise/fall time should be less than 12ns *2. cl=100pf
topway lcd module user manual LM6023A url: www.topwaydisplay.com www.topwaysz.com document name: LM6023A-manual-rev0.3.doc page: 7 of 13 3.3.2 6800 mode system bus timing v ss =0v, v dd =3v, t op =25 c item symbol min. typ. max. unit system cycle time tcyc6 900 - - ns address setup time taw6 30 - - ns address hold time tah6 38 - - ns data setup time tds6 80 - - ns data hold time tdh6 30 - - ns output disable time (*2) toh6 - - 200 ns access time (*2) tacc6 - - 280 ns enable high pulse width (read) tewhr 280 - - ns enable high pulse width (write) tewhw 120 - - ns enalbe low pulse width (read) tewlr 280 - - ns enable low pulse width (write) tewlw 400 - - ns note: *1. input signal rise/fall time should be less than 12ns *2. cl=100pf
topway lcd module user manual LM6023A url: www.topwaydisplay.com www.topwaysz.com document name: LM6023A-manual-rev0.3.doc page: 8 of 13 3.3.3 serial interface timing v ss =0v, v dd =3v, t op =25 c item symbol min. typ. max. unit serial clock cycle tscyc 1000 - - ns serial clock high pulse width tshw 400 - - ns serial clock low pulse sidth tslw 300 - - ns address setup time tsas 200 - - ns address hold time tsah 800 - - ns data setup time tsds 200 - - ns data hold time tsdh 200 - - ns cs serial clock time tcss 120 - - ns cs serial clock time tcsh 400 - - ns note: *1. input signal rise/fall time should be less than 12ns 3.3.4 reset timing v ss =0v, v dd =3v, t op =25 c item symbol min. typ. max. unit reset time tr 2 - - s reset low pulse width trw 2 - - s note: *1. input signal rise/fall time should be less than 12ns
topway lcd module user manual LM6023A url: www.topwaydisplay.com www.topwaysz.com document name: LM6023A-manual-rev0.3.doc page: 9 of 13 4. function specifications 4.1 basic setting to drive the lcd module correctly and provide nor mally display, please use the following setting - initial display line = 0 - adc = 0 (normal) - normal/reverse display = normal - entire display on/off = off (normal) - lcd bias = 1/8 - set output status register = normal - set power control: voltage follower=on, voltage booster=on, voltage regulator=on - display on/off = on note: *1. these setting/commands should issue the lcd module while start up. *2. see the display commands section for details. 4.2 resetting the lcd module the lcd module should be initialized by using /res terminal. while turning on the vdd and vss power supply, maintain /res terminal at low level. after the power supply stabilized, release the reset terminal (/res=high) 4.3 display memory map page address data lcd display (front view) 0 d0 : d7 1 d0 : d7 2 d0 : d7 3 d0 : d7 4 d0 : d7 5 d0 : d7 6 d0 : d7 7 d0 : d7 column address 00h ? 7fh note: *1. initial display line = 0 *2. adc=0 *3. output status register = normal 128x64 p ixels
topway lcd module user manual LM6023A url: www.topwaydisplay.com www.topwaysz.com document name: LM6023A-manual-rev0.3.doc page: 10 of 13 4.4 display commands code no. instructions a0 /rd /wr d7 d6 d5 d4 d3 d2 d1 d0 function 1 display on/off 0 1 01010111 0 / 1 turns on lcd when goes high, turns off lcd when goes low 2 initial display line 0 1 0 0 1 start display address specifies display ram loca tion for first line of display 3 set page address 0 1 0 1 0 1 1 page address set the display ram page address 4.1 set column address (upper-4-bits) 0 1 0 0 0 0 1 col. add. upper set the upper-4-bit of column address counter 4.2 set column address (lower-4-bits) 0 1 0 0 0 0 0 col. add. lower set the lower-4-bit of column address counter 5 read status 0 0 1 status 0 0 0 0 read the internal status d4=reset, 1=resetting, 0=normal d5=display on/off, 1=off, 0=on d6=adc flag, d7=busy flag, 1=busy, 0=ready 6 write display data 1 1 0 display data write data into the display ram 7 read display data 1 0 1 display data read data form the display ram 8 adc select 0 1 01010000 0 / 1 sets the column address direction 0 = normal display 1 = flipped in x direction 9 normal/reverse display 0 1 01010011 0 / 1 normal indication when low full indication when high 10 entire display on/off 0 1 01010010 0 / 1 0 = normal display 1 = all-on display 11 set lcd bias 0 1 01010001 0 / 1 set the lcd driving voltage bias 0 = 1/8bias 1 = 1/6bias 12 read-modify-write 0 1 011100000 enter the ?read-modify-write? mode column address counter will increase in each ?write display data?, and will not increase in each ?read display data command? 13 end 0 1 011101110 clear the ?read-modify-write? m ode 14 reset 0 1 011100010 resets the internal functions 15 set output status register 0 1 0 1 1 0 0 0 / 1 *** set the com scanning direction 0 = normal display 1 = flipped in y direction * = don?t care terms 16 set power control 0 1 0 0 0 1 0 1 power status set the power circuit operation mode d0 = lcd supply voltage follower d1 = lcd supply voltage regulator d2 = lcd supply voltage booster (1=on, 0=off) 17 set electronic control register 0 1 0 1 0 0 electronic control value set electronic vol. value (display contrast value) 18 set standby (static indicator control) 0 1 01010110 0 / 1 set the status, when power save 0 = sleep mode will be entered, (static indicator off) 1 = standby mode will be entered (static indicator on) 19 power save - - - -------- compound command step 1: display on/off= off step 2: entire display on/off = on note: *1. do not use any other command not listed, or the system malfunction may result. *2. for the details of the display commands, please refer to s1d15300 series data sheet.
topway lcd module user manual LM6023A url: www.topwaydisplay.com www.topwaysz.com document name: LM6023A-manual-rev0.3.doc page: 11 of 13 4.5 basic operating sequence (example) 4.5.1 initialization sequence code function a0 d7 d6 d5 d4 d3 d2 d1 d0 hex note - - - - - - - - - - turn on power supply vdd & vss while maintaining /res at low - wait until power supply is stabilized - - - - - - - - - - - - - - - - - - - - - release the /res reset signal ( /res = high) see ac characteristics section for timing details lcd bias = 1/8 0 1 0 1 0 0 0 1 0 a2 lcd panel characteristic adc = normal 0 1 0 1 0 0 0 0 0 a0h no flip on x-direction (seg) output status register=normal 0 1 1 0 0 0 0 0 0 c0h no flip on y-direction (com) 0 0 1 0 0 0 0 0 0 40h init display line=0 i.e. display ram ?page 0 - d0? matched to top line of the lcd 0 1 0 0 1 0 0 0 0 90h electronic control register=10000b set to the middle of the range it may be adjusted for achieving the best display contrast 000101111 2fh power control lcd voltage follower = on lcd voltage regulator = on lcd voltage booster = on turn on all the internal power circuit for driving the lcd normally display on/off = on 0 1 0 1 0 1 1 1 1 afh turn on the lcd display 0 1 0 1 1 0 0 0 0 b0h set page address = 0 specify the display data ram page address going to write = 0 0 0 0 0 1 0 0 0 0 10h 0 0 0 0 0 0 0 0 0 00h set column address = 0 specify the display data ram column address going to write = 0 (two command) 1 display data write display data write data to display data ram. after write, the internal column address counter will be increased by 1 automatically write other display data ?
topway lcd module user manual LM6023A url: www.topwaydisplay.com www.topwaysz.com document name: LM6023A-manual-rev0.3.doc page: 12 of 13 4.5.2 power save sequence (sleep mode) going into sleep mode (a compound command) code function a0 d7 d6 d5 d4 d3 d2 d1 d0 hex note 010101100 ach set standby=0 (static indicator=off) turn off the static indicator display on/off =off 0 1 0 1 0 1 1 1 0 aeh turn off the lcd display entire display on/off = on 0 1 0 1 0 0 1 0 1 a5h display all on command sleep mode resume form sleep mode code function a0 d7 d6 d5 d4 d3 d2 d1 d0 hex note entire display on/off = off 0 1 0 1 0 0 1 0 0 a4h display all on command or display on/off = on 0 1 0 1 0 1 1 1 1 afh turn on the lcd display resume from sleep mode 4.5.3 power off the lcd module it recommends that enter sleep mode before power off the lcd module. 4.5.4 refreshing the lcd module it recommends that the operating modes and display contents be refreshed periodically to prevent the effect of unexpected noise.
topway lcd module user manual LM6023A url: www.topwaydisplay.com www.topwaysz.com document name: LM6023A-manual-rev0.3.doc page: 13 of 13 5. design and handling precaution 1. the lcd panel is made by glass. any mechanical shock (eg. dropping form high place) will damage the lcd module. 2. do not add excessive force on the surface of the display, which may cause the display color change abnormally. 3. the polarizer on the lcd is easily get scratched. if possible, do not remove the lcd protective film until the last step of installation. 4. never attempt to disassemble or rework the lcd module. 5. only clean the lcd with isopropyl alcohol or ethyl alcohol. other solvents (eg. water) may damage the lcd. 6. when mounting the lcd module, make sure that it is free form twisting, warping and distortion. 7. ensure to provide enough space (with cushion) between case and lcd panel to prevent external force adding on it, or it may cause damage to the lcd or degrade the display result. 8. only hold the lcd module by its side. never hold lcd module by add force on the heat seal or tab. 9. never add force to component of the lcd module. it may cause invisible damage or degrade of the reliability. 10. lcd module could be easily damaged by static electricity. be careful to maintain an optimum anti-static work environment to protect the lcd module. 11. when peeling off the protective film from lcd, static charge may cause abnormal display pattern. it is normal and will resume to normal in a short while. 12. take care and prevent get hurt by the lcd panel sharp edge. 13. never operate the lcd module exceed the absolute maximum ratings. 14. keep the signal line as short as possible to prevent noisy signal applying to lcd module. 15. never apply signal to the lcd module without power supply. 16. ic chip (eg. tab or cog) is sensitive to the light. strong lighting environment could possibly cause malfunction. light sealing structure casing is recommend. 17. lcd module reliability may be reduced by temperature shock. 18. when storing the lcd module, avoid exposure to the direct sunlight, high humidity, high temperature or low temperature. they may damage or degrade the lcd module

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