View W9121_2067285.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

W91210 series tone/pulse dialer with redial function publication release date: may 1995 - 1 - revision a3 general description the W91210 series are si-gate cmos ics that provide the necessary signals for either pulse or tone dialing. the W91210 series features a redial function. features ? dtmf/pulse switchable dialer ? one by 32 digits for redial memory ? pulse-to-tone (*/t) keypad for long distance call operation ? uses 4 4 keyboard ? easy operation with redial, flash, pause, and */t keypads ? pause, p t (pulse-to-tone) can be stored as a digit in memory ? minimum tone output duration: 87 ms ? minimum intertone pause: 87 ms ? flash time (100 ms, 300 ms or 600 ms) selectable by keypad ? pause time 3.6 sec or 2.0 sec ? on-chip power-on reset ? uses 3.579545 mhz crystal or ceramic resonator ? packaged in 16-pin plastic dip ? the different dialers in the W91210 series are described in the following table: type no. pulse (pps) flash (ms) pause time (s) m/b pulse-to-tone pause time W91212 10 100/300/600 3.6 pin yes W91214/a 10 100/300/600 3.6/2.0 pin no W91216 10 100/300/600 3.6 pin yes note: W91214 designed for use in france, W91216 for germany.
W91210 series - 2 - pin configuration 1 2 3 4 5 6 7 8 9 dd v r4 r3 dtmf r2 r1 hks 14 15 16 11 12 13 10 c3 ss v mode xt xt t/p mute c1 c2 dp/c4 W91212/W91214/W91214a/W91216 pin description symbol 16-pin i/o function column- row inputs 1 ? 3 & 13 ? 16 i the keyboard input may be from either the standard 4 4 keyboard or an inexpensive single contact (form a) keyboard. electronic input from a c can also be used. a valid key entry is defined by a single row being connected to a single column. xt, xt 6, 7 i, o a built-in inverter provides oscillation with an inexpensive 3.579545 mhz crystal or ceramic resonator. t/p mute 8o 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 break. otherwise, it is switched off. mode 4 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). if the mode pin is left floating, the dialer is in pulse mode (10 pps, m/b = 1:2).
W91210 series publication release date: may 1995 - 3 - revision a3 pin description, continued symbol 16-pin i/o function hks 9 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 / c4 10 o n-channel open drain dialing pulse output (figure 1). flash key will cause dp to be active in either tone mode or pulse mode. dtmf 11 o in pulse mode, remains in low state. in tone mode, outputs a dual or single tone. detailed timing diagram for tone mode is shown in figure 2(a, b). output frequency specified error % r2 r3 r4 c1 c2 c3 697 770 852 941 1209 1336 1477 actual 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 12, 5 i power input pins.
W91210 series - 4 - block diagram hks mode t/p mute column row xt xt dp/c4 (r1 to r4) dtmf system clock generation read/write counter ram location latch row & column programmable counter data latch & decoder keyboard interface (c1 to c3) d/a converter pulse control logic control logic functional description keyboard operation c1 c2 c3 dp / c4 123 f1r1 456 f2r2 789 f3r3 */t 0 # r/p r4 ? */t: * and p t key ? r/p: redial and pause function key ? f1, f2, f3: flash keys normal dialing off hook , 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.
W91210 series publication release date: may 1995 - 5 - revision a3 redialing off hook , d1 , d2 , ..., dn busy, come on hook , off hook , r/p the r/p key can execute the redial function only as the first key-in after off-hook; otherwise, it ex- ecutes the pause function. access pause off hook , 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 3. pulse-to-tone (*/ t) off hook , 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 , 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 4(a, b). flash off hook , f 1. the flash key cannot be stored as a digit in memory. the flash key has first priority among the keyboard functions. 2. the system will return to the initial state after the flash pause time is finished. 3. the flash function timing diagram is shown in figure 5. off hook , f , d1 , d2 , d3 , ..., dn lnb = d1, d2, d3, ..., dn off hook , d1 , d2 , f , d3 , ..., dn lnb = d3, ..., dn
W91210 series - 6 - 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 o f the device. dc characteristics (v dd -v ss = 2.5v, fosc. = 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 - 0.30 1.0 ma pulse - 0.15 0.5 ma standby current i sb hks = 0, no load & no key enry --15 a memory retention current i mr hks = 1, v dd = 1.0v - - 0.2 a dtmf output voltage v to row group, r l = 5 k ? 130 150 170 mvrm s pre-emphasis col/row, v dd = 2.0 to 5.5v 1 2 3 db dtmf distortion t hd r l = 5 k ? , v dd = 2.0 to 5.5v - -30 -23 db dtmf output dc level v tdc r l = 5 k ? , 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 hks i/p pull-high resistor r kh - 300 500 k ? keypad input drive current i kd v i = 0v 30 - - a keypad input sink current i ks v i = 2.5v 200 400 - a keypad resistance - - 5.0 k ?
W91210 series publication release date: may 1995 - 7 - revision a3 ac characteristics 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 t pdp mode pin = v dd -40 -ms 10 pps mode pin = floating - 33.3 - ms interdigit pause (auto dialing) t idp 10 pps - 800 - ms make/break ratio m/b mode pin = v dd - 40:60 - % mode pin = floating - 33:67 - % dtmf output duration t td auto dialing 85 87 - ms intertone pause t itp auto dialing 85 87 - ms flash break time t fb f1 - 100 - ms f2 - 300 - f3 - 600 - flash pause time t fp f1 - 1.0 - s f2 - 1.0 - f3 - 1.0 - pause time t p W91212/214/216 - 3.6 - s W91214a - 2.0 - notes: 1. crystal parameters suggested for proper operation are rs < 100 ? , 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
W91210 series - 8 - timing waveforms hks key in dp 3 2 idp t t pdp t pdp t kid t kid r/p t pdp t/p mute t b t m t pdp oscillation oscillation osc. normal dialing auto dialing t/p mute low dtmf t idp figure 1. pulse mode timing diagram note: the dashed line is for W91216 only in pulse mode. hks t itp dtmf t td t itp t itp t krd t kid t krd t krd key in t kid t/p mute dp high oscillation oscillation osc. figure 2(a). tone mode normal dialing timing diagram
W91210 series - 10 - timing waveforms, continued dp t kid pdp t t idp t idp b t 28 */t key in 4 hks t/p mute t p m t oscillation osc. dtmf t/p mute figure 4(a). p t operation timing diagram in normal dialing (W91212, W91216) note: the dashed line is for W91216 only. dp t kid t t idp t idp 2 key in 4 hks t kid */t t/p mute pdp dtmf osc. oscillation * tone figure 4(b). p t operation timing diagram in normal dialing (for W91214/W91214a)
W91210 series publication release date: may 1995 - 11 - revision a3 timing waveforms, continued key in dp t kid low hks t fb t fp f 4 dtmf oscillation osc. t td t itp t/p mute t/p mute figure 5. flash operation timing diagram note: the dashed line is for W91216 only.
W91210 series - 12 - 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.

▲Up To Search▲

Price & Availability of W9121

	To Download W9121 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .