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w91580 series 24-memory tone/pulse switchable dialer with handfree and hold functions publication release date: auguest 1995 - 1 - revision a3 general description the w91580 series dialers are si-gate cmos ic tone/pulse switchable dialers containing a 24- channel automatic dialing memory, including a 16-digit 3 emergency dialing memory, a 16-digit 20 channel repertory memory that provides one-touch and three-touch dialing, and a 32-digit mercury memory. these dialers also provide flash, clear, hold, and one-key redial functions. features dtmf/pulse switchable dialer 31/32-digit lnb (last number buffer) memory (tone/pulse mode) 31/32-digit mercury memory (tone/pulse mode) 15/16-digit 3 one-touch direct repertory memory (tone/pulse mode) 15/16-digit 20 direct or indirect repertory memory (tone/pulse mode) uses 9 5 keyboard flash time: 98 ms, 305 ms, or 600 ms (selectable by keypad option) pause time: 3.6 sec. pause and p ? t (pulse-to-tone) can be stored as a digit in memory minimum tone output duration: 100 ms minimum intertone pause: 100 ms on-chip power-on reset uses 3.579545 mhz crystal or ceramic resonator packaged in 22, 24, or 28-pin plastic dip the different dialers in the w91580 series are shown in the following table: type no. pulse ( pp s) memory mercury memory hold handfree package w91580 10 20 - - - 22 W91580A 10 20 - - yes 24 w91580b 10/20 24 yes yes yes 28 w91580c 10/20 24 save yes yes 28
w91580 series - 2 - pin configurations r2 r1 r4 1 2 3 4 5 18 19 20 21 22 c1 c3 c4 c5 c2 c6 c7 6 7 8 9 14 15 16 17 mode dtmf 10 11 12 13 xt r3 v dd v ss r5 xt t/p mute hks dp/c9 nc r2 r1 r4 1 2 3 4 5 20 21 22 23 24 c1 c3 c4 c5 c2 c6 c7 6 7 8 9 16 17 18 19 mode dtmf 10 11 12 1 3 1 4 15 xt hfo r3 v dd v ss r5 xt t/p mute hfi hks dp/c9 nc r2 r1 r4 1 2 3 4 5 24 25 26 27 28 c1 c3 c4 c5 c2 c6 c7 6 7 8 9 20 21 22 23 mode dtmf 10 11 12 17 18 19 xt r3 v dd v ss r5 xt dp/c9 hks 13 14 15 16 hfo t/p mute hfi c8 kt drs hpm mute nc w91580 W91580A w91580b/c pin description symbol 22-pin 24-pin 28-pin i/o function column- row inputs 1 - 7 & 18 - 22 1 - 7 & 20 - 24 1 - 8 & 24 - 28 i the keyboard input may be used with either the standard 9 5 keyboard or an inexpensive single contact (form a) keyboard. electronic input from a m c can also be used. a valid key entry is defined by a single row being connected to a single column. xt, xt 9, 10 9, 10 11, 12 i, o a built-in inverter provides oscillation with an inexpensive 3.579545 mhz crystal or ceramic resonator. t/p mute 11 11 13 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 sequence and flash break. otherwise, it is switched off. hpm mute - - 23 o the hpm mute is a conventional inverter output. during pulse dialing, flash, hold, and mercury mute functions, this pin will output an active high. it remains in a low state at all other times.
w91580 series publication release date: auguest 1995 - 3 - revision a3 pin description, continued symbol 22-pin 24-pin 28-pin i/o function mode 15 17 19 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, m/b = 2:3). leaving mode pin floating places the dialer in pulse mode (10 pps, m/b = 1:2). hks 12 14 16 i hook switch input. hks = 1: on-hook state. chip in sleep mode, no operation. hks = 0: off-hook state. chip enabled for normal operation. hks pin is pulled to v dd by internal resistor. dp / c 9 13 15 17 o n-channel open drain dialing pulse output (see figure 1) . flash key causes dp to go active when in pulse mode and tone mode. nc 17 19 22 - no connection. dtmf 14 16 18 o in pulse mode, remains in low state at all times. in tone mode, outputs a dual or single tone. detailed timing diagram for tone mode is shown in figure 2 . output frequency specified actual error % 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 r1 v dd, v ss 16, 8 18, 8 20, 10 i power input pins.
w91580 series - 4 - pin description, continued symbol 22-pin 24-pin 28-pin i/o function hfi , hfo - 12, 13 14, 15 i, o handfree control pins. a low pulse on the hfi input pin toggles the handfree control state. the status of the handfree control state is described by the following table: current state hook sw. - on hook off hook on hook off hook off hook hfo low high low high high - input off hook on hook on hook hfo high low high dialing yes no yes yes yes no next state hfi hfi hfi low low low hfi pin is pulled to v dd by internal resistor. kt - - 9 o keytone signal output. a keytone will be generated whenever a valid key is pressed. frequency is 600 hz and duration is 35 ms. drs - - 21 i dial rate selection. this pin is pulled to v dd by an internal resistor. drs mode pin tone/pulse dial rate m/b 1 0 v dd floating v ss v dd floating v ss pulse pulse tone pulse pulse tone 10 pps 10 pps 10 pps 20 pps 1:2 1:2 1:2 2:3
w91580 series publication release date: auguest 1995 - 5 - revision a3 block diagram mode xt row (r1 to r5) column (c1 to c8) dtmf row & column programmable counter system clock generator data latch & decoder keyboard interface d/a converter xt hks hfi control logic control logic pulse location latch ram read/write counter kt hfo dp/c9 t/p mute drs hpm mute functional description keyboard operation c1 c2 c3 c4 c5 c6 c7 dp / c 9 c8 1 2 3 s m00 m05 m10 m15 em1 r1 4 5 6 memo m01 m06 m11 m16 em2 r2 7 8 9 clr m02 m07 m12 m17 em3 r3 */t 0 # r/p m03 m08 m13 m18 h r4 f1 f2 f3 r m04 m09 m14 m19 *mer r5 * mer is for w91580b only; fin w91580c this key performs save function.
w91580 series - 6 - s: store function key f1, f2, f3: flash keys r: one-key redial h: hold function key dp / c 9 : this key is connected to pin dp / c 9 via a bipolar switching transistor and a diode. m0j: direct or indirect (memo + m0j = m1j) repertory memory m1j: direct repertory dialing emi: one-touch memory for emergency call */t: * & p ? t clr: clear ke y r/p: redial and pause function key mer: one-touch memory for mercury code dialing memo: indirect repertory dialing function key note: dn = 0 to 9, *, #, mij = m00 to m19 (i = 0, 1; j = 0 to 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 exceeds 32 digits. redialing 1. off hook , d1 , d2 , ? , dn busy, come on hook , off hook (or on hook & hfi ), r/p or on hook & hfi , d1 , d2 , ? , dn , busy, hfi come hfi , r/p the r/p key can execute the redial function only as the first key-in after off-hook; otherwise, it will execute the pause function. 2. off hook (or on hook & hfi ), d1 , d2 , ? , dn , r a. the one-key redial function timing diagram is shown in figure 4. b. if dialing of d1 to dn is completed, pressing the r key will cause the pulse output pin to go low for 2.2 seconds. break time and a 600 ms pause will automatically be added. c. if the r key is pressed before the pulses for the number dialed out are completed, it will be ignored.
w91580 series publication release date: auguest 1995 - 7 - revision a3 number store 1. off hook (or on hook & hfi ), s , d1 , d2 , ? , dn s , mij , emi or mer d1, d2, ..., dn will be stored in memory location but will not be dialed out. r/p and */t keys can be stored as a digit in memory. in store mode r/p is the pause function key. the store mode is released after the store function is executed or when the state of the hook switch is changed. 2. s , d1 , d2 , ? , dn , s , i , j d1, d2, ..., dn will be stored in memory location mij and will not be dialed out. 3. s , d1 , d2 , ? , dn , s , memo , m0j a. d1, d2, ..., dn will be stored in memory location m10 to m19 and will not be dialed out. b. memo + m0j = m1j. 4. off hook (or on hook & hfi ), d1 , d2 , ? , dn , s , s , mn ( or ln ), on hook a. d1, d2, ..., dn will be stored in memory location and will be dialed out. b. the s key must be pressed after completion of the dialing sequence. 5. d1 , d2 , ? , dn , s , s , i , j d1, d2, ..., dn will be stored in memory location mij and will be dialed out. 6. d1 , d2 , ? , dn , s , s , memo , m0j a. d1, d2, ..., dn will be stored in memory location m10 to m19 and will be dialed out. b. memo + m0j = m1j. repertory dialing 1. off hook (or on hook & hfi ), mij or emi or mer 2. off hook (or on hook & hfi ), memo , i , j 3. off hook (or on hook & hfi ), memo , m0j access pause
w91580 series - 8 - 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 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 (3.6s) , 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 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 p ? t function timing diagram is shown in figure 6. 5. */ t key can be stored as a digit in memory flash (f = f1, f2, f3) off hook (or on hook & hfi ), f 1. flash key cannot be stored as a digit in memory, and it 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. clear key 1. clr , r/p (or r ) redial and one-key redial buffer will be cleared. 2. clr , mij location mij buffer content will be cleared. 3. clr , i , j location mij buffer content will be cleared. 4. clr , memo , m0j location m1j buffer content will be cleared. save
w91580 series publication release date: auguest 1995 - 9 - revision a3 1. off hook (or on hook & hfi ), d1, d2, ? , dn s , s , save d1, d2, ? , dn will be stored in save memory and dialed out. 2. off hook (or on hook & hfi ), s , d1, d2, ? , dn s , save d1, d2, ? , dn will be stored in save memory but will not be dialed out. chain dialing relationship between the memory and the chain dialing buffer: memory digit location 16 m00 16 . . . m01 . . . m18 16 32 m19 m20 em1 em2 em3 normal dialing section 1 section 2 section 3 section 4 chain dialing buffer . . . . . . . . . . the chain dialing buffer may be divided into four sections, allowing up to four numbers to be dialed out in sequence. for example, if the user enters m01, m03, em1, and normal dialing (manual dialing), the content of sections 1 to 4 will be m01, m03, em1, and normal dialing (manual dialing). when numbers are entered into the chain dialing buffer, there is no need to wait until the previous dialing sequence has been completed. numbers may be entered directly, one after the other, even while previous numbers are being dialed out. 1. manual dialing + repertory dialing redial buffer content = manual dialing + repertory dialing. 2. repertory dialing + manual dialing redial buffer content = repertory dialing + manual dialing.
w91580 series - 10 - 3. repertory dialing + repertory dialing redial buffer content = repertory dialing + repertory dialing. 4. redialing + manual dialing redial buffer content = redialing + manual dialing. the primary redial content may not be manual dialing. otherwise, the last redial content will be overwritte n. 5. redialing + repertory dialing redial buffer content = redialing + repertory dialing. redialing is valid only as the first key-in after off-hook or after the handfree dialing function is toggled on. the second sequence should not be performed until the first sequence is completely dialed out. 6. manual dialing + one key redialing redial buffer content = manual dialing. the one-key redial may only be used after dialing out of a manual dialing sequence is completed. 7. repertory dialing 1 (m1) + one key redialing + repertory dialing 2 (m2) + one key redialing or repertory dialing 1 (m1) + one key redialing + repertory dialing 2 (m2) , on hook , off hook , redialing m1 and m2 represent any of the repertory dialing memories. the first redialing will dial out m1; the second will dial out m1, m2. if dialing out of the repertory dialing memories has not been completed, the one-key redial key will be ignored. dialing of the second repertory dialing memory (m2) should not be performed un til the one-key redialing operation is completed. notes: 1. chain dialing (cascaded dialing) allows for memory or manual dialing while a previous dialing sequence is still being dialed out. 2. more than one sequence of manual dialing is not permitted. entering more than one manual dialing sequence will inhibit redialing. chain dialing of more than four sections is not permitted. manual dialing + m1 + manual dialing (two sections of manual dialing) 3. if more than four sections are entered, all sections after the fourth section will be ignored and redialing will be inhibited. manual dialing + m1 + m2 + m3 + m4 (over 4 sections, ignore m4 and inhibit redial) 4. there is a 2.0 sec. inter-chain dialing pause for cascaded dialing.
w91580 series publication release date: auguest 1995 - 11 - revision a3 mercury dialing 1. up to 32 digits may be stored. 2. mercury dialing is activate only as the first key-in after off-hook or when handfree dialing is activated. 3. the timing diagram for the mercury memory function is shown below. t idp t p dtmf osc. key in mer hpm mute oscillation dp t/p mute mercury function timing diagram 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 temprature 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.
w91580 series - 12 - dc characteristics (v dd - v ss = 2.5v, f osc . = 3.58 mhz, t a = 25 c, all outputs unloaded) parameter sym. conditions min. typ. max. unit operating voltage v dd 2.0 - 5.5 v operating current i op tone - 0.3 0.5 ma pulse - 0.15 0.3 standby current i sb hks = 0, no load & no key entry - - 15 m a memory retention current i mr hks = 1, v dd = 1.0v - - 0.2 m a dtmf output voltage v to row group, r l = 5k 130 150 170 vrms pre-emphasis - col/row, v dd = 2.0 to 5.5v 1 2 3 db dtmf distortion t hd r l = 5 k w , v dd = 2.0 to 5.5v - -30 -23 db 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 ml v mo = 0.5v 0.5 - - ma hpm mute output sink current i hpml v to = 0.5v 0.5 - - ma hpm mute output drive current i hpmh v th = 2.0v 0.5 - - ma hks i/p pull high resistor r kh - 300 - k w key tone output current i kth v kth = 2.0v 0.5 - - ma i ktl v kth = 0.5v 0.5 - - hfo drive/sink current i hfh v hfh = 2.0v 0.5 - - ma i hfl v hfl = 0.5v 0.5 - - 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 - - 5.0 k w ac characteristics
w91580 series publication release date: auguest 1995 - 13 - revision a3 parameter sym. conditions min. typ. max. unit keypad active in debounce t kid - - 20 - ms key release debounce t krd - - 20 - ms pre-digit pause 1 t pdp1 mode pin = v dd - 40 - ms 10 pps mode pin = floating - 33.3 - pre-digit pause 2 t pdp2 mode pin = v dd - 20 - ms 20 pps mode pin = floating - 16.7 - interdigit pause (auto dialing) t idp 10 pps - 800 - ms 20 pps - 500 - make/break ratio m/b mode pin = v dd - 40:60 - % mode pin = floating - 33:67 - tone output duration t td auto dialing - 100 - ms intertone pause t itp auto dialing - 100 - ms flash break time t fb - - 98 - ms - 305 - - 600 - pause time t p - - 3.6 - s key tone frequency f kt - - 600 - hz key tone duration t ktd - - 35 - ms one-key redialing pause time t rp - - 600 - ms one-key redialing break time t rb - - 2.2 - 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.
w91580 series - 14 - timing waveforms 2 2 4 t ki d m b t pd p t id p t ki d t id p t pd p low oscillation oscillation t id p hks key in t/p mute dtmf hpm mute kt dp osc. figure 1. pulse mode diagram (normal dialing) hks key in t/p mute t kid t td t itp dtmf t krd t kid t itp t itp t krd low high low hpm mute kt dp osc. oscillation oscillation figure 2. tone mode diagram (normal dialing)
w91580 series publication release date: auguest 1995 - 15 - revision a3 timing waveforms, continued on hook hks off hook hfi hfo low high t/p mute hpm mute chip enble h key figure 3(a). note: h key cannot be enabled when chip is disabled. off hook hks hfi h key hfo high t/p mute hpm mute chip enble figure 3(b). note: the hfi and h key inputs will toggle the hfo signal; as soon as either hfi or h key is activated, the hfo signal will go high and previous inputs will be ignored.
w91580 series - 16 - timing waveforms, continued on hook hks hfi h key hfo high t/p mute hpm mute chip enble figure 3(c). note: changing the state of the hks signal from high to low will initialize the hfo and hpm mute signals. low hks r key in t/p mute t kid dp t rb t pdp pr t t idp low hpm mute kt dtmf osc. oscillation figure 4. pulse mode one-key redialing timing diagram (when not first key)
w91580 series publication release date: auguest 1995 - 17 - revision a3 timing waveforms, continued 2 r/p 2 hks 4 key in t/p mute t kid m b t pdp dp t idp b m t idp t pdp t p low hpm mute kt dtmf osc. oscillation t idp figure 5. pause function timing diagram 2 */t 8 hks 4 key in t/p mute t kid m b t pdp dp t idp b m t p t idp hpm mute kt dtmf osc. oscillation t idp figure 6. pulse-to-tone function timing diagram
w91580 series - 18 - timing waveforms, continued f low hks key in t/p mute dp t fb low hpm mute kt dtmf osc. oscillation t kid figure 7. flash operation timing diagram
w91580 series publication release date: auguest 1995 - 19 - revision a3 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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