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W91550DN series 13-memory tone/pulse dialer with lcd and lock functions publication release date: november 1998 - 1 - revision a3 general description the W91550DN series are si-gate cmos ic tone/pulse switchable dialers containing 13 number memories and a 10-digit lcd driver for displaying telephone numbers and calling time, including a 16-digit 3 one-touch memory, 16-digit 10 two-touch memory dialing, and 32-digit 2 redial and save memory. these dialers also provide a secrecy key, flash, two-way handfree dialing, one-key redial, hold and lock functions. features tone/pulse switchable dialer two by 32-digit redial and save memory (or mercury memory) three by 16-digit one-touch direct repertory memory ten by 16-digit two-touch indirect repertory memory memory check function save/mercury function selec ted by pin option typical interdigit pause (idp): 800 msec (10 pps) in pulse mode uses 4 7 keyboard mute key for secrecy control minimum tone output duration/inter-tone pause: 87/87 ms flash pause time: 1.2 sec. flash break time (98, 300, 600 msec) selectable by keypad pause time (2.0, 3.6, 4.0 sec.) selectable by mask option pulse-to-tone (*/t) keypad for long distance call operation 0 or 9 dialing inhibition pin for pabx system or long distance dialing lock out make/break ratio selected by pin option built-in 10-digit lcd driver for telephone number display and calling time (1/3 duty, 1/2 bias) built-in calling time from (00:00) to (59:59) on-chip power-on reset and clear lcd on hook debounce: 250 msec in normal mode (20 msec in lock mode) first key-in delay: 300 msec in lock mode uses 3.579545 mhz crystal or ceramic resonator packaged in 64-pin qfp the different dialers in the W91550DN series are shown in the following table: type no. function package W91550DNf default pause time is 3.6 sec. and all f1, f2, f3 are first priority. qfp W91550DNf-1 same as W91550DN except f3 can be stored as a digit. qfp W91550DNh default pause time is 3.6 sec. and all f1, f2, f3 are first priority. chip W91550DNh-1 same as W91550DN except f3 can be stored as a digit. chip
W91550DN series - 2 - pin configuration 1 20 33 52 64 no. name no. name no. name no. name 1 kmute 17 5c 33 10c 49 c6 2 com3 18 6a 34 v ss 50 r1 3 1a 19 6b 35 dtmf 51 r2 4 1b 20 6c 36 b/m 52 r3 5 1c 21 7a 37 test 53 r4 6 2a 22 7b 38 v dd 54 xt 7 2b 23 7c 39 hpm mute 55 xt 8 2c 24 8a 40 t/p mute 56 hks 9 3a 25 8b 41 ats 57 hfi 10 3b 26 s/ m 42 dp 58 hfo 11 3c 27 8c 43 mode 59 v lcd 12 4a 28 9a 44 c1 60 cp 13 4b 29 9b 45 c2 61 cn 14 4c 30 9c 46 c3 62 com1 15 5a 31 10a 47 c4 63 com2 16 5b 32 10b 48 c5 64 lock
W91550DN series publication release date: november 1997 - 3 - revision a3 pin description symbol pin i/o function column, row inputs 44 - 49 & 50 - 53 i the keyboard input may be used with either the standard 4 7 keyboard, an inexpensive single contact (form a) keyboard or electronic input. a valid key entry is defined by a single row being connected to a single column. xt, xt 54, 55 i, o a built-in inverter provides oscillation with an inexpensive 3.579545mhz crystal. most crystals do not vary by more than 0.02%. the oscillator oscillates in off-hook or handfree mode but oscillation ceases in on-hook mode or when the handfree mode is released. t/p mute 40 o the t/p mute is a conventional cmos n-channel open drain output. the output transistor is switched on during pulse and tone mode dialing sequences and flash breaks. otherwise, it is switched off. hpm mute 39 o the hpm mute is a conventional cmos inverter output. during pulse dialing, flash break, hold, and mercury mute functions, this pin will output an active high. otherwise, it remains in a low state. kmute 1 o the kmute is a cmos n-channel open drain output. the output transistor is switched on only during the mute function. otherwise, it is switched off. mode 43 i pulling mode pin to v ss places the dialer in tone mode. pulling mode pin to v dd places the dialer in pulse mode. pulse or tone mode can be selected any time. hks 56 i hook switch input. hks = v dd : on-hook state. chip in sleeping mode, no operation. hks = v ss : off-hook state. chip enable for normal operation. hks pin is pulled to v dd by internal resistor. dp 42 o this pin is a cmos inverter output. the timing diagram is shown as figure 1(a), 1(b), 1(c), 1(d). flash key will cause dp to go active in either pulse mode or tone mode.
W91550DN series - 4 - pin description, continued symbol pin i/o function dtmf 35 o in pulse mode, this pin remains in low state at all times. in tone mode, it will output a dual or single tone. a detailed timing diagram for tone mode is shown in figure 2(a), 2(b), 2(c) 2(d). specified actual error % output frequency r1 r2 r3 r4 c1 c2 c3 697 770 852 941 1209 1336 1477 699 766 848 948 1216 1332 1472 +0.28 -0.52 -0.47 +0.74 +0.57 -0.30 -0.34 v dd , v ss 38, 34 i power input pins. b/m 36 i make: break ratio select pin. if b/m = v dd , the m/b ratio is 40:60. if b/m = v ss , the m/b ratio is 33.3:66.7. b/m pin is pulled to v dd by internal resistor. s/ m 26 i save and mercury select pin. if s/ m = v dd , the save function is selected. if s/ m = v ss , the mercury function is selected. s/ m pin is pulled to v dd by internal resistor. ats 41 i if ats = v dd , the auto timer function is enabled. if ats = v ss , the auto timer function is disabled. ats pin is pulled to v dd by internal resistor.
W91550DN series publication release date: november 1997 - 5 - revision a3 pin description, continued symbol pin i/o function hfi , hfo 57, 58 i, o handfree control pins. a low pulse on the hfi input pin toggles the handfree control state. status of the handfree control is listed in the following table: current state input hfo dialing high yes on hook high low no off hook high low yes on hook off hook low yes off hook low on hook low no off hook high on hook high yes low hook sw. hfo hfi next state hfi hfi - - hfi pin is pulled to v dd by internal resistor. detailed timing diagram is shown in figure 4. lock 64 i the lock pin is used to prevent "0" or "9" dialing under pabx system long distance call control. when the first key input after reset is "0" or "9", all the key inputs, including "0" or "9" key, become invalid, and the chip generates no output. the telephone is reinitialized by a reset. the following table describes the functions of the lock pin: lock pin floating v dd ss v function normal dialing "0", "9" dialing inhibited "0" dialing inhibited test 37 i in normal operation, pulling the test pin to v dd inhibits the single tone. in testing operation, pulling the test pin to v ss enables a single tone to be created by pressing two keys simultaneously, and all of the timing parameters for pulse dialing are faster than in normal operation. v lcd 59 i power supply pin for lcd driver. a 1 m f capacitor is connected between v lcd and v ss . cp, cn 60, 61 i cp is the voltage control capacitor positive pin. cn is the voltage control capacitor negative pin. a 1 m f capacitor is connected between these two pins.
W91550DN series - 6 - pin description, continued symbol pin i/o function com1 - com3 62, 63, 2 o com1 - com3 are common signal output terminals for the 1/3 duty lcd. 1(a, b, c) - 10(a, b, c) 3 - 33 (unless 26-pin) o 1(a, b, c) - 10(a, b, c) are 10-digit segment signal output terminals. block diagram row column dtmf xt xt hks mode ram counter system clock generator location latch d/a row & column programmable counter data latch & decoder com1 com2 com3 backplan signal generator segment output decoder l.c.d. read/write b/m test ats hfi (r1 ~ r4) (c1 ~ c6) hpm mute t/p mute hfo kmute control logic pulse control logic keyboard interface converter lock s/m dp
W91550DN series publication release date: november 1997 - 7 - revision a3 functional description keyboard operation c1 c2 c3 c4 c5 c6 vss 1 2 3 e m1 tim r1 4 5 6 chk m2 f1 mute r2 7 8 9 a m3 f2 h r3 * /t 0 # r/p * save f3 r r4 e: store digit chk: a. check dialing number b. memory check (except mercury) a: indirect repertory memory dialing function key r/p: redial and pause function key * /t: * in tone mode and p ? t in pulse mode m1 to m3: one touch memory *save: save function key, if the s/ m pin = v dd mer, mercury code dialing, if the s/ m pin = v ss tim: timer display key f1, f2, f3: flash keys mute: secrecy control key h: hold function key r: one-key redial function notes: d1, ..., dn, d1', ..., dn': 0, ..., 9, * /t, # mn: direct memory location m1, m2, m3 lm, ln, lp: indirect memory location 0, ..., 9 normal dialing off hook (or on hook & hfi ?? ), d1 , d2 , ..., dn 1. d1, d2, ..., dn will be dialed out. 2. dialing length is unlimited, but redial is inhibited if length oversteps 32 digits in normal dialing. 3. the dialing mark (the dot of digit_1) will be lit until dialing is finished. redialing 1. off hook (or on hook & hfi ?? ), d1 , d2 , ..., dn busy come on hook , off hook (or on hook & hfi ?? ), r/p
W91550DN series - 8 - a. the r/p key can execute the redial function only as the first key-in after off-hook; otherwise, it will invoke the pause function. b. the redial memory content will be d1, d2, d3, ..., dn. c. if redialing length oversteps 32 digits, the redialing function will be inhibited. 2. off hook (or on hook & hfi ?? ), d1 , d2 , ..., dn , busy, r a. the one key redialing function timing diagram is shown in figure 3. b. if the dialing of d1 to dn is finished, pressing the r key will cause the pulse output pin dp to go low for 2.2 seconds break time and 0.6 seconds pause time will be added automatically. c. if the pulses of the dialed digits d1 to dn have not finished, r will be ignored. number store 1. off hook , (or on hook & hfi ?? ), d1 , d2 , ..., dn , e (many times same as one time), mn (or a , ln , or ln ), on hook d1, d2, ..., dn will be stored in memory location mn (or ln) and will be dialed out. 2. off hook , (or on hook & hfi ?? ), e , d1 , d2 , ..., dn , e (could be skipped), mn , on hook off hook (or on hook & hfi ?? ), e , d1 , d2 , ..., dn , e a (could be skipped), ln , on hook a. d1, d2, ..., dn will be stored in memory location mn (or ln) but will not be dialed out. b. r/p and */t keys can be stored as a digit in memory, but r/p key cannot be the first digit. in store mode, r/p is the pause function key. c. the store mode is released after the store function is executed or when the state of the hook switch changes or the flash function is executed. 3. off hook , e , mn , (or a , ln , or ln ) the redial content will be copied to memory location mn (or ln). save if the s/ m pin = v dd , the save function is selected: 1. off hook , (or on hook & hfi ?? ), d1 , d2 , ..., dn , conversation, e , d1' , d2' , ..., dn' , save
W91550DN series publication release date: november 1997 - 9 - revision a3 d1', d2', ..., dn' will be stored in save memory but will not be dialed out. 2. off hook , (or on hook & hfi ?? ), d1 , d2 , ..., dn , save a. d1, d2, ..., dn will be dialed out before the save key is pressed. b. the d1, d2, ..., dn will be copied to save memory when the save key is pressed after d1, d2, ..., dn dialing is finished. 3. off hook , (or on hook & hfi ?? ), save a. d1, d2, ..., dn will be dialed out when the save key is pressed. b. all of the sequences will be displayed on the lcd. mercury if the s/ m pin = v ss , the mercury function is selected: 1. off hook , (or on hook & hfi ?? ), d1 , d2 , ..., dn , conversation, e , d1' , d2' , ..., dn' , mer d1', d2', ..., dn' will be stored in mercury memory but will not be dialed out. 2. mercury memory content = d1', d2', ..., dn' a. off hook , (or on hook & hfi ?? ), d1 , d2 , ..., dn , mer d1, d2, ..., dn will be dialed out but the mer's contents can't be dialed out. b. off hook , (or on hook & hfi ?? ), mer d1', d2', ..., dn' will be dialed out, and the mercury mark (the dot of digit_10) will be blinking during mercury dialing. detailed timing diagram is shown in figure 5. c. the mer key can be used to execute the mercury function only when it is the first key-in in dialing mode after off-hook state or first priority flash operation (except W91550DN-1's f3). d. with the exception of the mercury mark, the contents of mercury memory will not be displayed on the lcd. e. mercury memory cannot be checked in memory check mode. repertory dialing 1. one-touch direct repertory dialing. a. off hook , (or on hook & hfi ?? ), mn b. off hook , (or on hook & hfi ?? ), save (or mer ) 2. two-touch indirect repertory dialing. off hook , (or on hook & hfi ?? ), a , ln
W91550DN series - 10 - access pause off hook (or on hook & hfi ?? ), d1 , d2 , r/p , d3 , ..., dn 1. the pause function can be stored in memory. 2. the pause function is executed in normal dialing, redialing, or memory dialing. 3. the pause function timing diagram is shown in figure 6. pulse-to-tone (*/t) off hook (or on hook & hfi ?? ), d1 , d2 , ..., dn , */t , d1' , d2 , ..., dn' 1. if the mode switch is set to pulse mode, then the output signal will be: d1, d2, ..., dn, pause (3.6 sec), d1', d2', ..., dn' (pulse) (tone) 2. if the mode switch is set to tone mode, then the output signal will be: d1, d2, ..., dn, * , d1', d2', ..., dn' (tone) (tone) 3. the dialer remains in tone mode when the digits have been dialed out and can be reset to pulse mode only by goin g on-hook. 4. the pulse-to-tone function timing diagram is shown in figure 7. tim off hook , (or on hook & hfi ?? ), d1 , d2 , ..., dn (or redialing or repertory dialing ), conversation, tim 1. if no key is pressed after dialing and ats pin = 1, the lcd will automatically display counting time after 6 seconds. 2. the timer will count after the tim key is pressed from 00:00. flash (f = f1, f2, f3) off hook , (or on hook & hfi ?? ), f 1. the dialer will execute flash break times of 600 ms (f1), 300 ms (f2), or 98 ms (f3) and a pause time of 1.2 sec. before the next digit is dialed out. 2. the flash key cannot be stored as a digit in memory and it has the first priority among keyboard functions (except for the f3 key of W91550DN-1). 3. the system will return to the initial state after pause time is finished. 4. keyboard functions are inhibited during flash and when flash break is being executed. 5. the flash timing diagram is shown in figure 8 and 12.
W91550DN series publication release date: november 1997 - 11 - revision a3 mute off hook , (or on hook & hfi ?? ), mute the mute is switched on and off by the mute key. the function timing diagram is shown in figure 9. hold key off hook , (or on hook & hfi ?? ), h 1. the hold function is switched on and off by the hold key. when the hold function is toggled on, the hold mark (dot of digit_6) will be lit. the function timing diagram is shown in figure 10(a, b). 2. the hold key will be ignored during dialing. cascaded and mixed dialing cascaded dialing 1. definition of cascaded dialing: in cascaded dialing, a new sequence may be pressed before the previous sequence has been sent out completely. the following are examples of cascaded dialing: example 1: normal dialing + repertory dialing 1 + repertory dialing 2 +... example 2: repertory dialing 1 + normal dialing + repertory dialing 2 +... example 3: redialing + normal dialing + repertory dialing +... 2. normal dialing, redialing, or repertory dialing as represented by each rectangle above is treated as one sequence. 3. at most 32 digits are allowed in cascaded dialing, but there is no limitation on the number of sequences. 4. the content of cascaded dialing may a combination of normal dialing, redialing, and repertory dialing. redialing is valid only as the first key-in, however. 5. if on hook , off hook , r is entered, then the cascaded dialing sequence described in the examples above will be dialed out only if the total number of digits does not exceed 32. if the sequence exceeds 32 digits then redialing is inhibited. mixed dialing 1. definition of mixed dialing: the examples of cascaded dialing given above are also examples of mixed dialing except that in mixed dialing a new sequence may be accepted only when the previous sequence has been dialed out completely. 2. there is no limitation on the number of digits and sequences in the mixed dialing. 3. the content of mixed dialing may be a combination of normal dialing, memory dialing, or one-key redialing.
W91550DN series - 12 - 4. if on hook , off hook , r is entered, then the mixed dialing sequence described in the above examples will be dialed out only if the total number of digits does not exceed 32. if the total exceeds 32 digits, then redialing is inhibited. combining cascaded and mixed dialing 1. cascaded dialing and mixed dialing may be combined, and each follows the rules described above. 2. to apply redialing to combinations of cascaded and mixed dialing: on hook , off hook , r , then redialing will be executed only if the total number of digits does not exceed 32. otherwise, the redialing is inhibited. 3. if there had been n cascaded sequences with a total of 30 digits dialed, then for the (n+1)th cascaded sequence, one 2-digit normal dialing sequence or one complete repertory dialing sequence (length up to 32 digits) can be dialed. the (n+2)th sequence will not be accepted for cascaded dialing. 4. after a total of 32 digits of cascaded dialing have been completed, mixed dialing can be added. absolute maximum ratings parameter symbol rating unit dc supply voltage v dd - v ss -0.3 to +7.0 v input/output voltage v il v ss -0.3 v v ih v dd +0.3 v v ol v ss -0.3 v v oh v dd +0.3 v power dissipation p d 120 mw operating temperature t opr -20 to 70 c storage temperature t stg -55 to 125 c note: exposure to conditions beyond those listed under absolute maximum ratings may adversely affect the life and reliability of the device. dc characteristics ( v dd - v ss = 3v, f osc . = 3.58 mhz , t a = 25 c, all output unloaded ) parameter sym. conditions min. typ. max. unit operating voltage v dd - 2.0 - 5.5 v operating current i op tone, unloaded - 0.6 1.0 ma pulse, unloaded - 0.4 0.8 memory retention current i mr hks = v dd , v dd = 1.0v - - 0.5 m a
W91550DN series publication release date: november 1997 - 13 - revision a3 dc characteristics, continued parameter sym. conditions min. typ. max. unit dtmf output voltage v to row group, r l = 5 k w 130 150 170 mvrms pre-emphasis col/row, v dd = 2.0 - 5.5v 1 2 3 db dtmf distortion thd r l = 5 k w , v dd = 2.0 - 5.5v - -30 -23 db dtmf output dc level v tdc r l = 5 k w , v dd = 2.0 - 5.5v 1.0 - 3.0 v dtmf output sink current i tl v to = 0.5v 0.2 - - ma dp output drive current i ph v po = 2.0v 0.5 - - ma dp output sink current i pl v po = 0.5v 0.5 - - ma common output voltage v ch - 2.8 3.0 3.2 v v cl - - 0 0.2 common output current i ch v com = 3.0v, v o = v com -0.4v -20 - - m a i cl v com = 0.0v, v o = 0.4v 20 - - segment output voltage v sh - 2.8 3.0 3.2 v v sl - - 0 0.2 segment output current i sh v seg = 3.0v, v o = seg -0.4v -5 - - m a i sl v seg = 0.0v, v o = 0.4v 5 - - rms voltage across v on - 2.0 2.12 - vrms a segment v off - - 1.225 1.35 average dc offset volatge v dc - - - 100 mv t/p mute output sink current i tml v tpm = 0.5v 0.5 - - ma hpm mute output sink current i hml v hpm = 0.5v 0.5 - - ma kmute output sink current i kml v km = 0.5v 0.5 - - ma control input pull-up/down resistor r cip s/ m , b/m, test , ats, mode, hfi 100 - - k w hks input pull-up resistor r hk hks - 300 500 k w keypad input drive current i kd v i = 0v 30 - - m a keypad input sink current i ks v i = 2.5v 200 400 - m a keypad resistance r k - - - 5.0 k w
W91550DN series - 14 - ac characteristics parameter sym. conditions min. typ. max. unit key-in debounce t kid - - 20 - ms key release debounce t krd - - 20 - ms off-hook delay t ofd lock only - 300 - ms first key-in delay t fkd lock only - 300 - ms on-hook debounce t ohd normal mode - 250 - ms lock mode - 20 - pulse mute delay t md b/m = v dd - 40 - ms b/m = v ss - 33.3 - pre-digit-pause (10 pps) t pdp b/m = v dd - 40 - ms b/m = v ss - 33.3 - interdigit pause (auto dialing) t idp 10 pps - 800 - ms make/break ratio m:b b/m = v dd - 40:60 - % b/m = v ss - 33:67 - tone output duration t td auto dialing - 87 - ms intertone pause t itp auto dialing - 87 - ms f1 - 600 - flash break time t fb f2 - 300 - ms f3 - 98 - flash pause time t fp f1, f2, f3 - 1.2 - s mask option - 2.0 - pause time t p (default 3.6s) - 3.6 - s - 4.0 - one-key redialing break time t rb - - 2.2 - s one-key redialing pause time t rp - - 0.6 - s lcd frame frequency f lcd - - 50 - hz notes: 1. crystal parameters suggested for proper operation are r s < 100 w , l m = 96 m h, c m = 0.02 pf, c n = 5 pf, cl = 18 pf, and f osc . = 3.579545 mhz 0.02% 2. crystal oscillator accuracy directly affects these times.
W91550DN series publication release date: november 1997 - 15 - revision a3 lcd display format a. normal dialing blinking off hook (or press " hfi " switch) (here tone mode was selected). dial "0123456789" and "56". note: in tone mode the tone mark (the dot of digit_9) will be lit. b. redialing, save dialing, one touch dialing press the "r/p" or "r" or "save" or "mn" key. (redial or save or mn = "1234567") c. mercury dialing blinking press the "mer" key, the mercury mark (the dot of digit_10) will be blinking.
W91550DN series - 16 - d. abbreviated auto dialing press the "a" key (l5 = "770066") in handset mode. press the "5" key. e. memory check a. blinking off hook or press the " hfi " switch (in which case the handfree mode is selected, and m3 = "035p770066"). press the "chk" key. press the "m3" key. note: in handfree mode the handfree mark (the dot of digit_7) will be lit. b. redial content off hook (or press " hfi " switch) press "r/p" or "r". (m1 = "1234567890123456") press the "chk" key.
W91550DN series publication release date: november 1997 - 17 - revision a3 continued blinking "m1" key. (display 1 - 10 digits) "any key" except "f1", "f2" and "f3" keys. (display 11 - 16 digits) f. timer function a. off hook (or press " hfi " switch), then press the "tim" key. (display last calling time) "774926" after dialing "774926", press the "tim" key. (timer will start counting up) press the "tim" key (timer will stop) b. off hook (or press the " hfi " key) dial "774926"
W91550DN series - 18 - continued after dialing "774926" press the "tim" key. (timer will start counting up) press the "chk" key. (m3 = "035p770066") press the "m3" key. blinking the system will return to timer mode after 6 seconds. (timer counts up continuously) press the "f1", "f2" or "f3" key. if the flash function is selected, the timer will stop and the lcd will display a blinking cursor.
W91550DN series publication release date: november 1997 - 19 - revision a3 lcd pattern for data 2 3 4 * # p t p 5 6 7 8 9 e check a f 0 1 l hold/icon6 mercury/icon10 handfree/icon7 timer/icon8 tone/icon9 flash/icon5 mute/icon4 pause/icon3 dailing/icon1 in use/icon2 notes: 1. the icon1 to icon10 are controlled by function operation. 2. the "in use/icon2" always blinks after power on.
W91550DN series - 20 - lcd panel pattern 1 a 1 c 1 b 2 2 2 3 3 3 4 4 4 5 5 5 6 6 6 7 7 7 8 8 8 9 9 9 (seg) (com) 1 0 a 1 0 c 1 0 b c o m c o m c 1 2 3 o m c o m c o m c 1 2 3 o m a c b a c b a c b a c b a c b a c b a c b a c b
W91550DN series publication release date: november 1997 - 21 - revision a3 timing waveforms b 3 3 2 hks m t kid hpm mute dtmf osc. low oscillation t pdp t/p mute dp b m t idp t idp t kid key in t md t idp t krd < 300ms < 600ms figure 1(a). normal dialing timing diagram (pulse mode without lock function) 3 3 2 hks hpm mute dtmf osc. low oscillation t/p mute dp t kid t kid key in t idp b m t idp t md t krd < 300ms < 600ms t ofd t fkd figure 1(b). normal dialing timing diagram (pulse mode with lock function)
W91550DN series - 22 - timing waveforms, continued t/p mute hks dtmf osc. dp key in low oscillation hpm mute t idp m b r/p t kid t idp m b m b t md t pdp t idp < 600ms figure 1(c). auto dialing timing diagram (pulse mode without lock function) t/p mute hks dtmf osc. dp key in low oscillation hpm mute r/p t kid t idp m b t idp m b m b t md t pdp t idp < 600ms t ofd t fkd figure 1(d). auto dialing timing diagram (pulse mode with lock function)
W91550DN series publication release date: november 1997 - 23 - revision a3 timing waveforms, continued t/p mute hks hpm mute dtmf osc. low oscillation dp kid t key in high t itp t td t itp krd t krd t krd t kid t t itp < 300ms < 600ms figure 2(a). normal dialing timing diagram (tone mode without lock function) t/p mute hks hpm mute dtmf osc. low oscillation dp key in high krd t krd t t td t itp krd t kid t t itp < 300ms < 600ms fkd t ofd t figure 2(b). normal dialing timing diagram (tone mode with lock function)
W91550DN series - 24 - timing waveforms, continued t/p mute hks hpm mute dtmf osc. dp key in low oscillation kid t high t itp t td t itp r/p < 600ms ohd t figure 2(c). auto dialing timing diagram (tone mode without lock function) t/p mute hks hpm mute dtmf osc. dp key in low oscillation high t itp t td t itp r/p ohd t 300ms < 600ms fkd t ofd t ofd t figure 2(d). auto dialing timing diagram (tone mode with lock function)
W91550DN series publication release date: november 1997 - 25 - revision a3 timing waveforms, continued t/p mute hks dtmf osc. dp key in r low oscillation hpm mute t kid t idp m b m b t md t pdp t idp t rb t rp low figure 3. one-key redial timing diagram t/p mute hks hfo osc. dp hfi hpm mute high osc. low osc. osc. ohd t ohd t figure 4. handfree timing diagram
W91550DN series - 26 - timing waveforms, continued t/p mute dtmf hks osc. oscillation dp key in hpm mute b mcr m t kid t pdp b m t idp t itp t p figure 5. mercury function timing diagram b 3 2 m t kid low oscillation t pdp b m t idp t idp t b t md 3 t idp r/p t p t/p mute hks hpm mute dtmf osc. dp key in figure 6. pause function timing diagram (pulse mode)
W91550DN series publication release date: november 1997 - 27 - revision a3 timing waveforms, continued b 4 2 m t kid oscillation t pdp b m t idp t idp 8 t itp */t t p t/p mute dtmf hks osc. dp key in hpm mute figure 7. pulse-to-tone timing diagram t/p mute hks dtmf osc. dp key in hpm mute f f t kid low oscillation low 2 3 t fp t fb b m t idp f t kid figure 8. first priority flash timing diagram
W91550DN series - 28 - timing waveforms, continued b 4 2 m t kid oscillation t pdp b m t idp t idp 2 mute mute b m t kid t kid t idp t/p mute hks osc. dp key in hpm mute kmute figure 9. mute timing diagram hks off hook on hook hfo hpm mute chip enble low high hfi t/p mute hold key figure 10(a). hold timing diagram note: the hold key cannot be enabled when the chip is disabled.
W91550DN series publication release date: november 1997 - 29 - revision a3 timing waveforms, continued t/p mute hfi hks off hook hfo high hpm mute chip enble hold key figure 10(b). hold timing diagram note: the hfi and hold key inputs will toggle the hfo signal; as soon as either hfi or hold key is activated, the hfo signal will go high and previous activated inputs will be ignored. t/p mute hold key hfi hks on hook hfo high hpm mute chip enble figure 10(c). hold timing diagram note: changing the state of the hks signal from high to low will initialize the hfo and hpm mute signals.
W91550DN series - 30 - timing waveforms, continued t/p mute dtmf b 4 2 hks m t kid osc. oscillation t pdp dp b m t idp t idp key in hpm mute < 300 ms t fkd figure 11. first key-in delay timing diagram t/p mute f3 f3 hks t kid dtmf osc. low oscillation dp b m t idp key in t fp t fp t fb 3 low hpm mute 2 b m t idp figure 12. flash timing diagram for the f3 key of W91550DN -1
W91550DN series publication release date: november 1997 - 31 - revision a3 bonding pad diagram 31 30 33 32 29 28 27 26 25 24 23 22 21 20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 (0, 0) 52 53 54 55 56 57 58 59 60 61 62 63 64 notes: 1. the substrate must be connected to v ss . 2. the chip size is 3010.00 3060.00 m m 2 unit: m m pad no. pad name x y pad no. pad name x y 1 kmute -1234.60 1369.20 17 5c -1359.60 -1127.00 2 com3 -1374.60 1322.70 18 6a -1359.60 -1281.50 3 1a -1359.60 1052.80 19 6b -1117.60 -1384.60 4 1b -1359.60 905.20 20 6c -970.00 -1384.60 5 1c -1359.60 741.40 21 7a -811.00 -1384.60 6 2a -1359.60 593.80 22 7b -658.60 -1384.60 7 2b -1359.60 430.00 23 7c -494.80 -1384.60 8 2c -1359.60 282.40 24 8a -342.40 -1384.60 9 3a -1359.60 118.60 25 8b -183.40 -1384.60 10 3b -1359.60 -29.00 26 s/ m -28.90 -1384.60 11 3c -1359.60 -192.80 27 8c 128. 00 -1384.60 12 4a -1359.60 -340.40 28 9a 280.40 -1384.60 13 4b -1359.60 -504.20 29 9b 439.40 -1384.60 14 4c -1359.60 -651.80 30 9c 587.00 -1384.60 15 5a -1359.60 -810.80 31 10a 746.00 -1384.60 16 5b -1359.60 -963.20 32 10b 898.40 -1384.60
W91550DN series - 32 - continued pad no. pad name x y pad no. pad name x y 33 10c 1062.20 -1384.60 49 c6 1333.60 1338.10 34 v ss 1346.40 -1375.50 50 r1 1034.10 1337.60 35 dtmf 1350.30 -1127.00 51 r2 878.10 1337.60 36 b/m 1333.80 -819.50 52 r3 705.10 1337.60 37 test 1328.80 -659.90 53 r4 549.10 1337.60 38 v dd 1328.70 -519.90 54 xt 363.00 1344.00 39 hpm mute 1340.90 -373.60 55 xt 217.80 1354.20 40 t/p mute 1340.90 -215.40 56 hks 72.50 1352.90 41 ats 1340.90 -79.30 57 hfi -67.50 1352.90 42 dp 1340.90 99.70 58 hfo -202.50 1369.20 43 mode 1340.90 270.70 59 v lcd -337.50 1369.20 44 c1 1333.60 524.10 60 cp -447.50 1369.20 45 c2 1333.60 680.10 61 cn -617.50 1369.20 46 c3 1333.60 853.10 62 com1 -757.50 1369.20 47 c4 1333.60 1009.10 63 com2 -908.20 1369.20 48 c5 1333.60 1182.10 64 lock -1052.60 1369.20 headquarters no. 4, creation rd. iii, science-based industrial park, hsinchu, taiwan tel: 886-3-5770066 fax: 886-3-5792766 http://www.winbond.com.tw/ voice & fax-on-demand: 886-2-27197006 taipei office 11f, no. 115, sec. 3, min-sheng east rd., taipei, taiwan tel: 886-2-27190505 fax: 886-2-27197502 winbond electronics (h.k.) ltd. rm. 803, world trade square, tower ii, 123 hoi bun rd., kwun tong, kowloon, hong kong tel: 852-27513100 fax: 852-27552064 winbond electronics north america corp. winbond memory lab. winbond microelectronics corp. winbond systems lab. 2727 n. first street, san jose, ca 95134, u.s.a. tel: 408-9436666 fax: 408-5441798 note: all data and specifications are subject to change without notice.

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