W541C260 data sheet 4-bit microcontroller publication release date: may 29, 2003 - 1 - revision a4 table of contents- 1. general des cription ......................................................................................................... 2 2. features ....................................................................................................................... .......... 2 3. block di agram .................................................................................................................. .... 4 4. pin configurati on .............................................................................................................. .5 5. pin descri ption ..................................................................................................................... 6 6. elecrical chara cteristics ............................................................................................. 7 6.1 absolute maxi mum rati ngs .......................................................................................... 7 6.2 dc characteri stics ........................................................................................................ 7 6.3 ac characte ristics ......................................................................................................... 8 7. application circui t ............................................................................................................ .9 8. revision history ............................................................................................................... .10 www.datasheet.in
W541C260 - 2 - 1. general description the W541C260 is fully compatible with w741c260 in t he terms of pin assignment and ic functon. it is a high-performance 4-bit microcontroller ( c) with an lcd driver. the device contains a 4-bit alu, two 8-bit timers, two dividers, a 32 4 lcd driver, and five 4-bit i/o ports (including 1 output port to drive the leds). there are also five interrupt sources and 8-level subroutine nesting for interrupt applications. the W541C260 has one power reduction mode to help minimize power dissipation. the W541C260 has two oscillator circuits and can wo rk in dual-clock or single-clock operation mode. it is suitable for remote controllers, watches and clocks, speech synthesis lsi controllers, and other products. 2. features ? operating voltage: 2.4v? 5.5v (lcd drive voltage: 3.0v, or 4.5v) ? single or dual clock mode ? single (main oscillator only) or dual clock (both main and sub-oscilator) by mask option . ? sub-oscillator is only 32.768 khz crystal for dual clock mode. ? main oscillator is crystal or rc oscillation by mask code option . ? main clock : high-frequency clock (400 khz to 4 mhz) or low-frequency clock (32.768 khz) is selected by mask code option ? memory ? 2048 16 bit program rom (including 2k 4 bit look-up table) ? 128 4 bit data ram (including 16 working registers) ? 32 4 lcd data ram ? 21 input/output pins ? ports for input only: 2 ports/8 pins ? input/output ports: 2 ports/8 pins ? port for output only: 1 port /4 pins (high sink current to drive leds) ? mfp output pin: 1 pin (mfp) ? do not be floating when it is as input or output open-drain (nmos type). ? power-down mode ? hold function: no operation (except for oscillator) ? stop function: no operation (including main clock) ? five types of interrupts ? four internal interrupts (divider 0, divider 1, timer 0, timer 1) ? one external interrupt (port rc) www.datasheet.in
W541C260 publication release date: may 29, 2003 - 3 - revision a4 ? lcd driver output ? 32 segment 4 common ? static, 1/2 duty (1/2 bias), 1/3 duty (1/2 or 1/3 bias), 1/4 duty (1/3 bias) driving mode can be selected ? lcd driver output pins can be used as dc output ports; selectable by code option ? mfp output pin ? output is software selectable as modulating or nonmodulating frequency ? works as frequency output specified by timer 1 ? two built-in 14-bit clock frequency divider circuit (divider 0 and divider 1) ? two built-in 8-bit programmable countdown timers ? timer 0: one of two internal clock frequencies (f osc /4 or f osc /1024) can be selected ? timer 1: includes an auto-reload function; and one of two internal clock frequencies (f osc or f osc /64) can be selected or falling edge of pin rc.0 can be selected (output through mfp pin) ? built-in 18/14-bit watchdog timer selectable for system reset ? powerful instruction set: 115 instructions ? 8-level subroutine (include interrupt) nesting ? up to 1 s instruction cycle (with 4 mhz operating frequency) ? packaged in 80-pin qfp www.datasheet.in
W541C260 - 4 - 3. block diagram lcd driver pc stack (8 levels) ram (128*4) alu timer 0 (8 bit) timing generator port ra port rb port rd port rc modulation frequency pulse seg0 to seg31 com0 to com3 ra0 to 3 rb0 to 3 rd0 to 3 rc0 to 3 re0 to 3 mfp xin1 xout1 vdd vss vdd1 to 3 dh1 to 2 rom (2048*16) (look_up table 2k*4) timer 1 (8 bit) acc res watch dog timer (4 bit) hcf pef hef ief central control unit evf sef psr0 pr mr1 .. mul sel +1(+2) port re . divider 0 (14 bit) divider 1 xin2 xout2 www.datasheet.in
W541C260 publ i c at i on rel e ase dat e : may 29, 2003 - 5 - revi si on a4 4. pin configuration 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 1 234 56 789 10 11 12 13 14 15 16 17 18 19 33 34 35 36 25 26 27 28 29 30 31 32 65 66 67 68 69 70 71 72 73 74 75 76 77 rd2 rd1 rd0 rc3 rc2 rc1 rc0 rb2 m f p / r e s x i n o u t v dn n dc c d h 1 d h 2 v d d seg24 seg23 seg22 seg21 seg20 seg19 seg18 seg17 seg16 v s s n c n c n c c o m c o m c o m c o m s e g s e g s e g s e g s e g s e g 32 10 012 345 ee rr 23 e 1 g seg15 seg14 seg13 seg12 rb1 rb0 ra3 ra2 rb3 s 3 3 v d d 2 v d d x r a 01 20 21 22 23 24 37 38 39 40 45 44 43 42 41 78 79 80 re1 re0 rd3 s e g s e g s e g s e g s e g s e g 67 891 0 1 1 seg27 seg26 seg25 n c n c ss e e g e g 09 8 g s 32 2 n c r a 1 n c n c n c 1 1 x i n o u t x 2 2 www.datasheet.in
W541C260 - 6 - 5. pin description s y m b o l i / o f u n c t i o n x i n 1 i input pin for oscillator. connected to crystal or resistor to generate system clo ck by code option. external 10~20pf capacitor uses to get accurate freq in crystal mode. x o u t 1 o output pin for oscillator. connected to crystal or resistor to generate system clo ck by code option. 20pf capacitor is built in internal for crystal mode. x i n 2 i input pin for sub-oscillator. connect ed to a 32.768 khz crystal. external 10~20pf capacitor uses to get a ccurate freq in crystal mode. x o u t 2 o output pin for sub-oscillator. c onnected to a 32.768 khz crystal. 20pf capacitor is built in in ternal for crystal mode. ra0 ra3 i/o input/output port. input/output mode specified by port mode 1 register (pm1). rb0 rb3 i/o input/output port. input/output mode specified by port mode 2 register (pm2). rc0 rc3 i 4-bit port for input only. each pin has an independent interrupt capability. and build-in schmitt trigger rd0 rd3 i 4-bit port for input only. re0 re3 o output port only.this port prov ides high sink current to drive leds. mfp o output pin only. this pin can output modulating or nonmodulating frequency, or timer 1 clock output specified by mode register 1 (mr1). res i system reset pin with pull-high resistor. seg0 seg31 o lcd segment output pins. can also be used as dc output por ts specified by code option. com0 com3 o lcd common signal output pins. static com0 com1 com2 com3 used not used 1/2 duty not used not used not used not used 1/3 duty not used 1/4 duty used used used used used used used used used the lcd alternating frequency can be selected by code option. dh1, dh2 i connection terminals for voltage doubler (halver) capacitor. v dd1 , v dd2 v dd3 i positive (+) supply voltage terminal. refer to functional description. v dd i positive power supply (+). v ss i negative power supply (-). www.datasheet.in
W541C260 publication release date: may 29, 2003 - 7 - revision a4 6. elecrical characteristics 6.1 absolute maximum ratings parameter rating unit supply voltage to ground potential -0.3 to +7.0 v applied input/output voltage -0.3 to +7.0 v power dissipation 120 mw ambient operating temperature 0 to +70 c storage temperature -55 to +150 c note: exposure to conditions beyond those lis ted under absolute maximum ratings may adversely affect the life and reliability of the device. 6.2 dc characteristics (v dd ? v ss = 3.0v, fm = 4 mhz, fs = 32.768 khz, t a = 25 c, lcd on; unless otherwise specified) parameter sym. conditions min. typ. max. unit op. voltage v dd - 2.4 - 5.5 v op. current (crystal type) i op1 no load (ext-v) in dual-clock normal operation - 0.6 2.5 ma op. current (rc type) i op2 no load (ext-v) in dual-clock normal operation - 1 4 ma op. current (crystal type) i op3 no load (ext-v) in dual-clock slow operation and fm is stopped - 8.5 20 a hold current (crystal type) i hm1 hold mode no load (ext-v) in dual-clock normal operation - 280 450 a hold current (rc type) i hm2 hold mode no load (ext-v) in dual-clock normal operation - 500 600 a hold current (crystal type) i hm3 hold mode no load (ext-v) in dual-clock slow operation and fm is stopped - 4.0 6 a stop current (crystal) i sm stop mode no load (ext-v) in single-clock operating - 0.1 2 a input low voltage v il - v ss - 0.3vdd v input high voltage v ih - 0.7vdd - v dd v www.datasheet.in
W541C260 - 8 - dc characteristics, continue parameter sym. conditions min. typ. max. unit mfp output low voltage v ml i ol = 2.7 ma - - 0.4 v mfp output high voltage v mh i oh = 3.5 ma 2.4 - - v port ra, rb output low voltage v abl i ol = 2.0 ma - - 0.4 v port ra, rb output high voltage v abh i oh = 2.0 ma 2.4 - - v lcd supply current i lcd all seg. on - - 6 p a seg0 seg31 sink current (used as lcd output) i ol1 v ol = 0.4v v lcd = 0.0v 0 . 4 - - p a seg0 seg31 drive current (used as lcd output) i oh1 v oh = 2.4v v lcd = 3.0v 0.3 - - p a segment output low voltage (used as dc output) v sl i ol = 0.6 ma - - 0.4 v segment output high voltage (used as dc output) v sh i oh = 3 p a 2 . 4 - - v port re sink current i el v ol = 0.9v 7.5 - - ma port re source current i eh v oh = 2.4v 0.4 1.2 - ma pull-up resistor r cd port rc, rd 100 350 1000 k : res pull-up res i s t or r res - 2 0 1 0 0 5 0 0 k : 6.3 ac characteristics (v dd v ss = 3.0v, fm = 4 mhz, fs = 32.768 khz, t a = 25 q c, lcd on; unless otherw i se specified) parameter sym. conditions min. typ. max. unit rc type - - 4000 op. frequency f os c crystal type 1 (option low speed type) - 3 2 . 7 6 8 - k h z crystal type 2 (option high speed type) 400 - 3580 frequency deviation by voltage drop for rc oscillator ' f f f(3v) f (2.4v) f(3v ) - - 1 0 % i n st ruct ion cy cle time t i one machine cycle - 4/f os c - m s res e t ac tive width t raw f os c = 32.768 khz 1 - - p s interrupt ac tive width t iaw f os c = 32.768 khz 1 - - p s www.datasheet.in
W541C260 publ i c at i on rel e ase dat e : may 29, 2003 - 9 - revi si on a4 7. application circuit mfp res xout1 xin1 dh1 dh2 rc2 rc3 ra0 ra3 output signal rb0 rb1 rb2 com0 com3 rb3 rc0 rc1 seg0 seg31 rd0 rd1 rd2 rd3 lcd panel (1/3 bias 1/4 duty) re0 re1 re2 re3 connect to capacitor and vd d to generate lcd voltage vcc vcc vcc v dd v dd1 v dd2 v dd3 v ss oout2 xin2 32.768 khz 0.1 uf 0.1 uf 470 : 0.1 uf *1 (option) note: *1 is for accuracy www.datasheet.in
W541C260 - 10 - 8. revision history v e r s i o n d a t e d e s c r i p t i o n a2 - note: update hi freq range from 4.19 3.58 mhz a3 - note: rc is built-in schmitt trigger a4 may 29, 2003 note: do not be floating when it is as input or output open-drain (nmos type) headquarters no. 4, creation rd. iii, science-based industrial park, hsinchu, taiwan tel: 886-3-5770066 fax: 886-3-5665577 http://www.winbond.com.tw/ taipei office tel: 886-2-8177-7168 fax: 886-2-8751-3579 winbond electronics corporation america 2727 north first street, san jose, ca 95134, u.s.a. tel: 1-408-9436666 fax: 1-408-5441798 winbond electronics (h.k.) ltd. no. 378 kwun tong rd., kowloon, hong kong fax: 852-27552064 unit 9-15, 22f, millennium city, tel: 852-27513100 please note that all data and specifications are subject to change without notice. all the trade marks of products and companies mentioned in this data sheet belong to their respective owners. winbond electronics (shanghai) ltd. 200336 china fax: 86-21-62365998 27f, 2299 yan an w. rd. shanghai, tel: 86-21-62365999 winbond electronics corporation japan shinyokohama kohoku-ku, yokohama, 222-0033 fax: 81-45-4781800 7f daini-ueno bldg, 3-7-18 tel: 81-45-4781881 9f, no.480, rueiguang rd., neihu district, taipei, 114, taiwan, r.o.c. www.datasheet.in
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