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w91330n series tone/pulse dialer with handfree lock and key tone functions publication release date: may 1997 - 1 - revision a2 general description the w91330n series are si-gate cmos ics that provide the necessary signals for tone or pulse dialing. they feature one-key redial, handfree dialing, key tone, redial, and lock functions. features dtmf/pulse switchable dialer 32-digit redial memory pulse-to-tone (*/t) keypad for long distance call operation uses 5 4 keyboard easy operation with redial, flash, pause, and */t keypads pause, pulse-to-tone (*/t) can be stored as a digit in memory 0 or 9 dialing inhibition pin for pabx system or long distance dialing lock out off-hook delay 300 ms in lock mode ( dp will keep low for 300 ms low while off hook) first key-in delay 300 ms output in lock mode dialing rate (10, 20 pps ) selected by bonding option minimum tone output duration: 93 msec. minimum intertone pause: 93 msec. flash break time (73, 100, 300, 600 msec.) selectable by keypad; pause time is 1.0 sec. on-chip power-on reset uses 3.579545 mhz crystal or ceramic resonator packaged in 18 or 20-pin plastic dip the different dialers in the w91330n series are shown in the following table: type no. replacement type no. pulse ( pp s) flash ( m s) m/b key tone handfree dialing lock package (pins) w91330n w91330 10 600/100/300/73 pin yes - - 18 w91331n w91331 20 600/100/300/73 pin yes - - 18 w91330an w91330a 10 600/100/300/73 pin yes yes - 20 W91331AN w91331a 20 600/100/300/73 pin yes yes - 20 w91330ln w91330l 10 600/100/300/73 pin - - yes 20 w91330aln w91330al 10 600/100/300/73 pin - yes yes 20
w91330n series - 2 - pin configurations c1 c2 c3 c4 ss v xt xt 1 2 3 4 5 6 7 8 9 t/p mute 10 hfi hks dtmf mode r4 r3 r2 r1 v dd dp 13 18 20 19 17 16 15 14 12 11 hfo c1 c2 c3 c4 ss v xt xt 1 2 3 4 5 6 7 8 9 t/p mute hks dtmf mode r4 r3 r2 r1 v dd dp 12 18 17 16 15 14 10 11 13 lock w91330an/W91331AN w91330aln w91330ln w91330n/w91331n c1 c2 c3 c4 ss v xt xt 1 2 3 4 5 6 7 8 9 t/p mute 10 hfi hks dtmf mode r4 r3 r2 r1 v dd dp 13 18 20 19 17 16 15 14 12 11 hfo lock kt c1 c2 c3 c4 ss v xt xt 1 2 3 4 5 6 7 8 9 t/p mute hks dtmf mode r4 r3 r2 r1 v dd dp 12 18 17 16 15 14 10 11 13 kt
w91330n series publication release date: may 1997 - 3 - revision a2 pin description symbol 18-pin 20-pin i/o function column- row inputs 1 - 4 & 15 - 18 1 - 4 & 17 - 20 i the keyboard inputs may be used with either the standard 5 4 keyboard or the inexpensive single contact (form a) keyboard. electronic input from a m c can also be used. a valid key-in is defined as a single row being connected to a single column. xt, xt 7, 8 7, 8 i, o a built-in inverter provides oscillation with an inexpensive 3.579545 mhz crystal or ceramic resonator. t/p mute 9 9 o the t/p mute is a conventional cmos n-channel open drain output. the output transistor is switched on during dialing sequence, one-key redial break, and flash break time. otherwise, it is switched off. mode 13 15 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. (10 pps; 20 pps for w91331n/W91331AN, m/b = 40:60) floating mode pin places the dialer in pulse mode. (10 pps; 20 pps for w91331n/W91331AN, m/b = 33.3:66.7). hks 10 12 i hook switch input. hks = v dd : on-hook state. chip in sleeping mode, no operation. hks = v ss : off-hook state. chip enabled for normal operation. hks pin is pulled to v dd by internal resistor. dp 11 13 o n-channel open drain dialing pulse output. flash key will cause dp to be active in either tone mode or pulse mode. the timing diagram for pulse mode is shown in figure 1(a, b, c, d). v dd , v ss 14, 6 16, 6 i power input pins.
w91330n series - 4 - pin description, continued symbol 18-pin 20-pin i/o function dtmf 12 14 o in pulse mode, this pin remains in low state at all times. in tone mode, it will output a dual or single tone. detailed timing diagram for tone mode is shown in figure 2(a, b, c, 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 hfi , hfo - 10, 11 i, o handfree control pins. the handfree control state is toggled on by a low pulse on the hfi input pin. the status of the handfree control state is described 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 next state hfi hfi hfi hfi pin is pulled to v dd by internal resistor. detailed timing diagrams are shown in figure 3. kt 5 (except w91330ln) 5 (except w91330aln) o key-tone signal output. the key tone is generated for all valid keys. frequency is 600 hz and duration is 35 ms.
w91330n series publication release date: may 1997 - 5 - revision a2 pin description, continued symbol 18-pin 20-pin i/o function lock 5 ( w91330ln only ) 5 ( w91330aln only ) i the function of this terminal is to prevent "0" dialing and "9" dialing under pabx system long distance call control. when the first key input after reset is 0 or 9, all key inputs, including the 0 or 9 key, become invalid and the chip generates no output. the telephone is reinitialized by a reset. lock pin function floating normal dialing mode v dd v ss "0," "9" dialing inhibited "0" dialing inhibited block diagram row column dtmf xt xt mode ram counter system clock generator location latch d/a row & column programmable counter data latch & decoder read/write (r1 to r4, vx) (c1 to c4) t/p mute hfo control logic pulse control logic keyboard interface converter lock hks hfi dp kt
w91330n series - 6 - functional description keyboard operation c1 c2 c3 c4 1 2 3 r1 4 5 6 f1 r2 7 8 9 f2 r3 * /t 0 # r/p1 r4 r/p2 r f3 f4 v x r: one-key redial function r/p1, r/p2: redial and pause function key, p1 is 3.6 sec. and p2 is 2.0 sec. * /t: * in tone mode and p ? t in pulse mode f1, ..., f4: flash keys, f1 = 600 ms, f2 = 100 ms, f3 = 300 ms, f4 = 73 ms notes: d1, ..., dn, d1', ..., dn': 0, ..., 9, */t, # r/p: r/p1 or r/p2. fn: f1, ..., f4 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. redialing off hook (or on hook & hfi ?? ), d1 , d2 , ..., dn busy, come on hook , off hook (or on hook & hfi ?? ), r/p the redial memory content will be dialed out. the r/p key can execute the redial function only as the first key-in after off-hook; otherwise, it executes pause function. if redialing length oversteps 32 digits, the redialing function will be inhibited. off hook (or on hook & hfi ?? ), d1 , d2 , ..., dn busy, r the one-key redialing function timing diagram is shown in figure 4. if the dialing of d1 to dn is finished, pressing the r key will cause the pulse output pin to go low for 2.2 seconds break time and 0.6 seconds pause time will automatically be added.
w91330n series publication release date: may 1997 - 7 - revision a2 if the pulses of the dialed digits d1 to dn have not finished, r will be ignored. the redial function by r key has no break time (2.2 sec.) if it is the first key in after off- hook. the r key uses the same redial buffer as the redial function by r/p1 or r/p2 key, and it is actived during normal dialing or repertory dialing. 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, redial dialing, or memory dialing . 3. the pause duration of 2.0 or 3.6 seconds per pause is selected by keypad. 4. the detailed timing diagram for the pause function is shown in figure 5. 5. only one pause function can be released to user. 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 (2.0 sec. or 3.6 sec.), d1', d2', ? , dn' (pulse) (tone ) if pause1 is excuted, the pause time of pulse-to-tone function is 3.6s. if pause2 is excuted, the pause time of the pulse-to-tone function is 2.0s. 2. if the mode switch is set to tone mode, then the output signal will be as follows: 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 going on-hook. 4. the pulse-to-tone function timing diagram is shown in figure 6. flash off hook (or on hook & hfi ?? ), fn 1. fn = f1, ? , f4 2. the dialer will execute flash break time of 600 ms (f1), 100 ms (f2), 300 ms (f3), or 73 ms (f4) before the next digit is dialed out. in each case, the pause time is 1.0 sec.
w91330n series - 8 - 3. flash key cannot be stored as a digit in memory. the flash key has the first priority among the keyboard functions. 4. the system will return to the initial state after the flash pause time is finished. 5. the flash function timing diagram is shown in figure 7. 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 operation temperature t opr -20 to +70 c storage temperature t stg -55 to +150 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 = 2.5v, f osc. = 3.579545 mhz, t a = 25 c, all outputs unloaded) parameter symbol conditions min. typ. max. unit operating voltage v dd - 2.0 - 5.5 v operating current i op tone, unloaded - 0.4 0.6 ma pulse, unloaded - 0.2 0.4 standby current i sb hks = v ss , no load & no key entry - - 15 m a memory retention current i mr hks = v dd , v dd = 1.0v - - 0.2 m a dtmf output voltage v to row group, r l = 5 k w 130 150 170 mvrms pre-emphasis col/row, v dd = 2.0 to 5.5v 1 2 3 db dtmf distortion thd r l = 5 k w , v dd = 2.0 to 5.5v - -30 -23 db
w91330n series publication release date: may 1997 - 9 - revision a2 dc characteristics, continued parameter symbol conditions min. typ. max. unit dtmf output dc level v tdc r l = 5 k w , v dd = 2.0 to 5.5v 1.0 - 3.0 v dtmf output sink current i tl v to = 0.5v 0.2 - - ma dp output sink current i pl v po = 0.5v 0.5 - - ma t/p mute output sink current i tml v tmo = 0.5v 0.5 - - ma key tone output i kth v kth = 2.0v 0.5 - - ma current i ktl v ktl = 0.5v 0.5 - - ma hfo drive/sink i hfh v hfh = 2.0v 0.5 - - ma current i hfl v hfl = 0.5v 0.5 - - ma keypad input drive current i kd v i = 0.0v 30 - - m a keypad input sink current i ks v i = 2.5v 200 400 - m a hks i/p pull-high resistor r hk - - 300 - k w keypad resistance r k - - - 5 k w ac characteristics (v dd - v ss = 2.5v, f osc. = 3.579545 mhz, t a = 25 c, all outputs unloaded.) parameter symbol 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 pre-digit-pause 1 t pdp1 mode = v dd - 40 - ms 10 pps mode = floating - 33.3 - pre-digit-pause 2 t pdp2 mode = v dd - 20 - ms 20 pps mode = floating - 16.7 - interdigit pause t idp 10 pps - 800 - ms (auto dialing) 20 pps - 500 -
w91330n series - 10 - ac characteristics, continued parameter symbol conditions min. typ. max. unit make/break ratio m:b mode = v dd - 40:60 - % mode = floating - 33.3:66.7 - tone output duration t td auto dialing - 93 - ms intertone pause t itp auto dialing - 93 - ms flash break time t fb f1 - 600 - f2 - 100 - ms f3 300 f4 - 73 - flash pause time t fp f1, f2, f3, f4 - 1.0 - s pause time t p r/p1 - 3.6 - s r/p2 - 2.0 - key tone frequency f kt - - 600 - hz key tone duration t ktd - - 35 - ms one-key redial break time t rb - - 2.2 - s one-key redial pause time t rp - - 0.6 - s notes: 1. crystal parameters suggested for proper operation are rs < 100 w , lm = 96 mh, cm = 0.02 pf, cn = 5 pf, cl = 18 pf, f osc . = 3.579545 mhz 0.02%. 2. crystal oscillator accuracy directly affects these times. timing waveforms t idp hks key in dp t/p mute 2 b m t idp t idp t kid t idp t pdp 2 m b 4 t krd 3 < 600 ms < 300 ms t kid dtmf osc. kt low oscillation oscillation t pdp figure 1(a). normal dialing timing diagram (pulse mode without lock function) timing waveforms, continued
w91330n series publication release date: may 1997 - 11 - revision a2 hks key in dp t/p mute t ofd 2 b m t idp t idp t pdp t kid t idp t pdp 2 m b 4 t kid t krd dtmf osc. kt low oscillation oscillation t fkd 3 < 600 ms < 300 ms figure 1(b). normal dialing timing diagram (pulse mode with lock function) hks key in dp t/p mute r/p t kid b m t idp t idp t pdp m b dtmf osc. kt low oscillation t idp < 600 ms t krd figure 1(c). auto dialing timing diagram (pulse mode without lock function)
w91330n series - 12 - timing waveforms, continued hks key in dp t/p mute t ofd b m t idp t idp t pdp m b dtmf osc. kt low oscillation r/p t kid t idp t fkd < 600 ms 300 ms figure 1(d). auto dialing timing diagram (pulse mode with lock function) hks key in t/p mute dtmf 5 t kid 2 4 t krd 3 < 600 ms < 300 ms t td osc. kt dp oscillation oscillation 2 t itp t itp t itp t kid high t itp oscillation t krd figure 2(a). normal dialing timing diagram (tone mode without lock function)
w91330n series publication release date: may 1997 - 13 - revision a2 timing waveforms, continued hks key in t/p mute dtmf 5 t kid 2 4 t krd 3 < 600 ms < 300 ms t td osc. kt t ofd dp oscillation oscillation t fkd 2 t itp t itp t itp figure 2(b). normal dialing timing diagram (tone mode with lock function) hks key in t/p mute dtmf r/p t krd < 600 ms osc. kt dp oscillation t td t itp t itp t kid figure 2(c). auto dialing timing diagram (tone mode without lock function)
w91330n series - 14 - timing waveforms, continued hks key in t/p mute dtmf r/p t krd < 600 ms 300 ms t td osc. kt t ofd dp oscillation t fkd t itp t itp figure 2(d). auto dialing timing diagram (tone mode with lock function) t/p mute hfi hks on hook hfo high chip enble figure 3. handfree dialing timing diagram
w91330n series publication release date: may 1997 - 15 - revision a2 timing waveforms, continued hks key in dp t/p mute dtmf osc. kt t ofd m t pdp low oscillation r b t fkd < 600 ms 300 ms r kid t b m t pdp t idp t rb t rp t idp hfi hfo kid t figure 4. one-key redial timing diagram (pulse mode) hks key in dp t/p mute dtmf osc. kt low oscillation < 600 ms 2 t kid r/p t ofd 300 ms 3 b m t pdp m t idp b t pdp t fkd t p oscillation figure 5. pause function timing diagram
w91330n series - 16 - timing waveforms, continued hks key in dp t/p mute dtmf osc. kt oscillation < 600 ms 2 t kid */t t ofd 300 ms 3 b m t pdp t idp t fkd t p oscillation t itp figure 6. pulse-to-tone timing diagram kt t/p mute f f hks t kid dtmf osc. dp key in low 3 t fb f t kid t kid t itp oscillation hfi hfo t fb t fp figure 7. flash timing diagram
w91330n series publication release date: may 1997 - 17 - revision a2 headquarters no. 4, creation rd. iii, science-based industrial park, hsinchu, taiwan tel: 886-3-5770066 fax: 886-3-5792697 http://www.winbond.com.tw/ voice & fax-on-demand: 886-2-7197006 taipei office 11f, no. 115, sec. 3, min-sheng east rd., taipei, taiwan tel: 886-2-7190505 fax: 886-2-7197502 winbond electronics (h.k.) ltd. rm. 803, world trade square, tower ii, 123 hoi bun rd., kwun tong, kowloon, hong kong tel: 852-27516023 fax: 852-27552064 winbond electronics north america corp. winbond memory lab. winbond microelectronics corp. winbond systems lab. 2730 orchard parkway, san jose, ca 95134, u.s.a. tel: 1-408-9436666 fax: 1-408-9436668 note: all data and specifications are subject to change without notice.

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