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W9145 series 15-memory tone/pulse dialer with lock and handfree functions publication release date: august 1996 - 1 - revision a4 general description the W9145 series are si-gate cmos ics that provide the necessary signals for either pulse or tone dialing. the W9145 series feature a key tone function, handfree dialing, a lock function, thirteen 16- digit automatic dialing memories, and two by 32-digit for redial and save memory. features dtmf/pulse switchable dialer two by 32 digits for redial and save memory three by 16 digits for one-touch direct repertory ten by 16 digits for two-touch indirect repertory unlimited dialing length (redial inhibited if dialing length exceeds 32 digits in normal dialing) auto pause access for pbx and toll service operations (3.1 seconds per pause) easy operation with redial, store, auto and pause keypads key tone output for recognition of valid keypad entry call disconnect (cd) key for line break operation mute key for speech mute flash time: 98 ms, 305 ms or 600 ms minimum tone output duration: 93 ms minimum intertone pause: 93 ms 0 or 9 dialing inhibition pin for pabx system or long distance dialing lock out automatic switching from pulse mode to tone mode by */t key operation break/make ratio pin selectable uses form a keyboard or standard 5 5 matrix keyboard uses inexpensive 3.579545 mhz television color-burst crystal internally generated power-on reset packaged in 22/24-pin dip the different dialers in the W9145 series are shown in the following table: type no. pulse ( pp s) flash b/m handfree lock W9145 10 98/305/600 pin no no W9145a 10 98/305/600 pin yes no W9145l 10 98/305/600 pin no yes W9145al 10 98/305/600 pin yes yes pin configurations
W9145 series - 2 - 1 22 r4 c2 c3 c4 2 3 4 5 6 17 18 19 20 21 r1 r2 r3 7 8 9 11 14 16 dtmf hks kt t/p mute 23 24 xt dp/c5 15 10 c1 r5 xt test mode x mute 12 13 hfo b/m hfi W9145a v ss v dd 21 r5 c2 c3 c4 1 2 3 4 5 16 17 18 19 20 r2 r3 r4 6 7 8 10 13 15 dtmf hks kt t/p mute 22 xt dp/c5 14 9 c1 xt test mode x mute 11 12 b/m W9145 v ss v dd r1 1 22 r4 c2 c3 c4 2 3 4 5 6 17 18 19 20 21 r1 r2 r3 7 8 9 11 14 16 dtmf hks kt t/p mute 23 24 xt dp/c5 15 10 c1 r5 xt lock mode x mute 12 13 hfo b/m hfi W9145al v ss v dd 21 r5 c2 c3 c4 1 2 3 4 5 16 17 18 19 20 r2 r3 r4 6 7 8 10 13 15 dtmf hks kt t/p mute 22 xt dp/c5 14 9 c1 xt lock mode x mute 11 12 b/m W9145l v ss v dd r1 pin description
W9145 series publication release date: august 1996 - 3 - revision a4 symbol 22-pin 24-pin i/o function column- row inputs 1 - 4 & 18 - 22 1 - 4 & 20 - 24 i keyboard inputs may be connected to either a standard keyboard, an inexpensive signal contact (form a) keyboard, or electronic input from a m c. a valid key entry is defined by a single row being connected to a single column. xt, xt 6, 7 6, 7 i, o a built-in inverter provides oscillation by means of an inexpensive 3.579545 mhz crystal or ceramic resonator. t/p mute 8 8 o the t/p mute is a conventional cmos inverter that pulls to v dd in the absence of keypad input and pulls to v ss when an address keypad entry is sensed (excluding the * and # keypads in pulse mode). when any keypad in row 5 and column 5 is pushed, the mute out remains at high level. mode 14 16 i pull to v ss to enable tone mode. pull to v dd to enable pulse mode (10 pps). hks 9 9 i hook switch input. when pulled to high, chip is in on-hook state (no operation). when pulled to low, chip is in off- hook state (enabled for normal operation). this pin is pulled to v dd by internal resistor. note: this pin operates in conjunction with the handfree control pins; for further information see description of handfree control pins below. b/m 16 16 i b/m = 1: break/make ratio is 60:40. b/m = 0: break/make ratio is 67:33. this pin has no function in tone mode. v dd , v ss 17, 5 19, 5 i power input pins. x mute 13 15 o the x mute is a conventional cmos inverter that in tone mode is active while a dtmf signal is being transmitted. in pulse mode, this output remains low at all times.
W9145 series - 4 - pin description, continued symbol 22-pin 24-pin i/o function hfi , hfo - 12, 13 i, o handfree control pins. a low pulse on hfi toggles on the handfree control state. status of the handfree control state is indicated in the following table: hook sw. - on hook off hook on hook off hook off hook current state next state hfo low high high - low high input hfi hfi hfi off hook on hook on hook hfo high low low low low high dialing yes no yes yes no yes hfi pin is pulled to v dd by internal resistor. kt 12 14 o key tone signal output. a 1.2 khz key tone will be generated when any key is depressed in pulse mode or when function keys are depressed in tone mode. lock 15 ( W9145l only ) 17 ( W9145al only) i the function of this terminal is to prevent "0" dialing in 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 normal dialing mode "0," "9" dialing inhibited "0" dialing inhibited v floating v dd ss test 15 (W9145 only) 17 ( W9145a only) i during normal operation, the test pin should be tied to v dd , thereby inhibiting the single tone and setting the pulse rate to 10 pps. dp / c5 10 10 o this pin is a cmos inverter output. the timing diagram is shown in figure 1. flash key will cause dp / c5 to go active in either pulse or tone mode.
W9145 series publication release date: august 1996 - 5 - revision a4 pin description, continued symbol 22-pin 24-pin i/o function dtmf 11 11 o in pulse mode, remains in low state at all times. in tone mode, will output a dual or single tone. detailed timing diagram for tone mode is shown in figure 2(a, b). output frequency (hz) r1 r2 r3 r4 c1 c2 c3 specified 697 770 852 941 1209 1336 1477 actual 699 766 848 948 1216 1332 1472 error % +0.28 -0.52 -0.47 +0.74 +0.57 -0.30 -0.34 block diagram hks mode x mute hfo hfi column row xt xt dp/c5 (r1 to r5) (c1 to c4) dtmf read/write counter ram location latch row & column programmable counter d/a converter data latch & decoder system clock generator t/p mute kt lock test control logic pulse control logic keyboard interface b/m
W9145 series - 6 - functional description keyboard operation c1 c2 c3 c4 dp / c 5 1 2 3 m1 mute r1 4 5 6 m2 cd r2 7 8 9 m3 f1 r3 */t 0 # save f2 r4 rd s a p f3 r5 mute: mute key cd: call disconnect */t: * & p ? t key rd: one-key redial s: store a: auto dialing p: pause m1 to m3: memory 1 to 3 save: save memory f1, f2, f3: 98/305/600 ms 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. redialing 1. off hook (or on hook & hfi ?? ), d1 , d2 , ..., dn , busy rd a. the one-key redialing function timing diagram is shown in figure 4. b. once dialing of d1 to dn is finished, pressing rd key will cause the pulse output pin to go low for 2.2 seconds break time and 600 ms pause will automatically be added. c. if the pulses of the dialed number d1 to dn have not finished, the rd key will be ignored. 2. off hook , d1 , d2 , ..., dn busy, come on hook , off hook (or on hook & hfi ?? ), rd
W9145 series publication release date: august 1996 - 7 - revision a4 or ( on hook & hfi ?? ), d1 , d2 , ..., dn , busy, hfi ?? , come hfi ?? , rd if rd is the first key after off-hook, only the redialing function will be executed and the pulse output pin will not go low for the break time of 2.2 seconds. access paus off hook (or on hook & hfi ?? ), d1 , d2 , p , d3 , ..., dn 1. the pause function can be stored in memory. 2. the pause function may be executed in normal dialing, redialing, or repertory dialing. 3. the pause function timing diagram is shown in figure 5. 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 (3.1s) 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) (tone) 3. the device can be reset to pulse mode only by going on-hook; device remains in tone mode when the digits have been dialed out. 4. the p ? t function timing diagram is shown in figure 6. flash off hook (or on hook & hfi ?? ), f 1. flash key cannot be stored as a digit in memory. flash key has first priority among keyboard functions. 2. the system will return to the initial state after the break time is finished. 3. the flash function timing diagram is shown in figure 7.
W9145 series - 8 - number store 1. off hook (or on hook & hfi ?? ), d1 , d2 , ..., dn , s , s , mn (or ln ) on hook (or on hook & hfi ?? ) a. the dialing of d1, d2, ..., dn must be finished before s key may be pressed. b. d1, d2, ..., dn will be stored in memory location mn or ln and then dialed out. c. mn = m1 to m3; ln = 0 to 9, *, pause. 2. off hook (or on hook & hfi ?? ), s , d1 , d2 , ..., dn , s , mn (or ln ) on hook (or on hook & hfi ?? ) a. d1, d2, ..., dn will be stored in memory location mn or ln but will not be dialed out. b. p and */t keys can be stored as a digit in memory. in store mode, p is the pause function key. c. the store mode is released once the store function is completed or the state of the hook switch changes. repertory dialing 1. off hook (or on hook & hfi ?? ), mn 2. off hook (or on hook & hfi ?? ), a , ln save key 1. off hook (or on hook & hfi ?? ), d1 , d2 , ..., save if the dialing of d1 to dn is finished, pressing the save key will cause d1 to dn to be duplicated to the save memory. 2. on hook come off hook , save d1 to dn will be dialed out after the save key is pressed. call disconnect off hook cd the dp / c 5 pin will go low (line break) when the cd key is pressed and the system will be reset to initial state. mute key off hook mute the mute output will be switched on as long as the mute key is depressed.
W9145 series publication release date: august 1996 - 9 - revision a4 cd and mute key function timing diagram is shown in figure 8. mixed dialing off hook (or on hook & hfi ?? ), 1. normal dialing + repertory dialing + normal dialing 2. repertory dialing + normal dialing + repertory dialing 3. redialing + normal dialing + repertory dialing a. redialing and save dialing are valid for firs t key-in only. b. the second sequence should not be performed until the first sequence is dialed out completely. 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 +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 = 2.5v, f osc = 3.58 mhz, t a = 25 c, unless otherwise noted parameter sym. conditions min. typ. max. unit operating voltage v dd tone 2.0 - 5.5 v pulse 2.0 - 5.5 v operating current i op tone, unloaded - 0.6 2 ma pulse, unloaded - 0.2 0.5 ma memory retention i mr hks = 1, t a = 25 c v dd = 1.0v - 0.1 0.2 m a standby current i s hks = 0, v dd = 2.5v - 0.1 5 m a tone output v to row group, r l = 5 k w 130 150 170 vrms
W9145 series - 10 - dc characteristics, continued parameter sym. conditions min. typ. max. unit pre-emphasis column group/row group v dd = 2.0 - 5.5v 1 2 3 db dtmf distortion t hd r l = 5 k w - -30 -23 db hfo drive/sink i hfh v hfh = 2.0v 0.5 - - ma current i hfl v hfl = 0.5v 0.5 - - ma tone output external load impedance r l t hd < -23 db 5 - - k w tone output dc level v dc v dd = 2.0 - 5.5v 1.0 - 3.0 v tone output sink current i tl v to = 0.5v 0.2 - - ma pulse output i ph v po = 2.0v -0.2 - - ma drive/sink current i pl v po = 0.5v 0.2 - - ma t/p mute output i mh v mo = 2.0v -0.2 - - ma drive/sink current i ml v mo = 0.5v 2 - - ma key tone output i kh v ko = 2.0v -0.5 - - ma drive/sink current i kl v kl = 0.5v 0.5 - - ma x mute drive/sink i lh v lo = 2.0v -0.2 - - ma current i il v lo = 0.5v 0.2 - - ma input voltage low v il gnd - 0.3 v dd v input voltage high v ih 0.7 v dd - v dd v keypad input i kd v i = 0v 10 30 80 m a drive/sink current i ks v i = 2.5v 200 400 - m a control pin input i in hks , mode, test , b/m - - 25 m a ac characteristics parameter sym. conditions min. typ. max. unit key-in debounce t kid - 20 - ms key-release debounce t krd - 20 - ms key tone delay t kd - 20 - ms
W9145 series publication release date: august 1996 - 11 - revision a4 ac characteristics, continued parameter sym. conditions min. typ. max. unit one-key redial break time t rb - 2.2 - s one-key redial break pause time t rp - 600 - ms pulse mute delay t md b/m = 1 - 40 - ms b/m = 0 - 33.3 - ms pre-digit pause t pdp b/m = 1 - 40 - ms b/m = 0 - 33.3 - ms pulse rate t pr mode = 1 - 10 - pps interdigit pause t idp - 800 - ms make/break ratio m:b b/m = 1 - 40:60 - % b/m = 0 - 33.3:66.7 - % tone duration t td auto dialing - 93 - ms intertone pause t itp auto dialing - 93 - ms flash break time t fb f1 - 98 - ms f2 - 305 - ms f3 - 600 - ms pause time t p - 3.1 - s key tone frequency f8 - 1.2 - khz
W9145 series - 12 - timing waveforms r 2 4 t manual dialing auto dialing low low kid t krd t pdp t idp t md oscillation oscillation hks key in kt t/p mute dp/c5 osc. dtmf x mute figure 1. pulse mode dialing timing diagram hks key in dtmf x mute t/p mute dp/c5 oscillation kt osc. t kid t td t td t itp t kd t krd t kid t krd t itp oscillation figure 2(a). tone mode normal dialing diagram
W9145 series publication release date: august 1996 - 13 - revision a4 timing waveforms, continued r hks key in dtmf x mute t/p mute dp/c5 kt osc. on hook oscillation t kid t td t itp t itp figure 2(b). tone mode redialing timing diagram on hook off hook hks hfi hfo t/p mute x mute chip enable low dp/c5 figure 3(a). handfree function timing diagram
W9145 series - 14 - timing waveforms, continued hks dp/c5 hfi low hfo t/p mute x mute chip enable figure 3(b). handfree function timing diagram on hook hks hfi dp/c5 hfo t/p mute x mute chip enable low figure 3(c). handfree function timing diagram
W9145 series publication release date: august 1996 - 15 - revision a4 timing waveforms, continued low r hks key in dp/c5 t/p mute low b b oscillation dtmf osc. low x mute m t idp t idp t pdp t rp t rb t kid figure 4. pulse mode timing diagram hks p 2 4 2 dp/c5 key in t/p mute x mute dtmf low low oscillation osc. t kid t pdp t idp t idp t ip t idp t idp figure 5. pause function timing diagram
W9145 series - 16 - timing waveforms, continued 2 */t 4 2 hks key in t/p mute dp/c5 low dtmf osc. x mute oscillation t idp t p t kid t pdp t idp t itp figure 6. p ? t operation timing diagram in normal dialing hks low f key in dp/c5 t/p mute x mute low oscillation dtmf osc. low t kid t fb figure 7. flash operation timing diagram
W9145 series publication release date: august 1996 - 17 - revision a4 timing waveforms, continued hks key in cd mt mt cd mt hfi dp/c5 hfo t/p mute x mute kt chip enable (mt = mute key) figure 8. mute key operation timing diagram
W9145 series - 18 - 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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