View SC91710A_2173544.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

silan semiconductors SC91710A/b hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 1 tone / pulse switchable dialer with handfree function description the SC91710A/b are tone/pulse switchable dialer which are fabricated in coms technology with wide operating voltage for both tone and pulse mode, and consumes very low memory retention current in on-hook state. features *tone/pulse switchable dialer *one 32-digit last number redial memory *pulse-to-tone (p ? t) is provided for pbx operation *flash key is available *minimum tone duration is 98ms or 83ms *minimum intertone pause is 98ms or 83ms *redial pause time (0ms) *uses 3.579549mhz crystal or ceramic resonator *many options can be selected mode (10pps; 20pps; tone) m/b ratio (40:60;33:66) pause time (3.6s) *flash function (reset) (p ? t) pause time (3.6s) flash time (600ms; 300ms; 100ms; or 80ms) dip-18 dip-16 *mixed dialing *power on reset circuit is provided *handfree function is provided for speaker phone application *packaged in 16-dip or 18-dip ordering information SC91710A sc91710b dip-16 packaged dip-18 packaged pin configuration 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 sc91710b c2 c3 c4 c1 hks osci osco tone v ss hfo r3 r2 r1 r4 po xmute 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 SC91710A hfi v dd c2 c3 c4 c1 osci osco v ss xmute hks tone r3 r2 r1 r4 po v dd
silan semiconductors SC91710A/b hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 2 block diagram osc. divider row interface ckt. column interface ckt. kernel control ckt. input interface ckt. input interface ckt. lnb memory d/a converter row/column programming counter decoder & data latch pulse generator po tone vss hfi hks row4 row3 row2 row1 osco osci col4 col3 col2 col1 xmute hfo vdd keyboard assignment c1 c2 c3 c4 r1 123p ? t r2 456f r3 789p r4 *or */t 0 # rd 1) p ? t: in pulse mode, execute p ? t function. 2) p: pause key. 3) f: flash key 4) rd: redial key 5) in pulse mode, execute p ? t function. in tone mode, execte * key dialing signal option a: flash time b: row3 row4 flash time(ms) row1 row2 mode pulse rate m/b nr nr 600 r nr tone -- -- nr r 300 r r tone -- -- r nr 100 nr nr pulse 20pps 40:60 r r 80 nr r pulse 20pps 33:66 ur nr pulse 10pps 40:60 ur r pulse 10pps 33:66
silan semiconductors SC91710A/b hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 3 c: tone function d: key type select col1 tone duration inter-tone pause col2 *or * / t select nr 98ms 98ms nr * r 83ms 83ms r */t note: nr: no resistance r: a resistance connect to v ss (820k w typically) ur: a resistance connect to v dd absolute maximum ratings (tamb=25 c, all voltage referenced to v ss , unless otherwise specified) characteristic symbol value unit power supply voltage v dd 6.0 v input voltage v in -0.3~v dd +0.3 v power dissipation p d 500 mw operating temperature topr -25~+70 c storage temperature tstg -55~+150 c electrical characteristics (tamb=25 c, v dd =2.5v, fosc=3.579545mhz, unless otherwise specified) parameter symbol conditions min typ max unit dc characteristics tone 2.5 -- 5.5 pulse 2.0 -- 5.5 operating voltage v dd memory retention 1.0 5.5 v tone -- 0.6 2 operating current i op pulse off-hook, keypad entry -- 0.2 0.5 ma standby current i s on-hook no keypad entry -- 0.1 1 m a memory retention current imr on-hook v dd =1.0v -- 0.1 0.2 m a control pin input low voltage vil -- v ss 0.3v dd control pin input high voltage vih -- 0.7v dd v dd v xmute pin leakage current imth v xmute =6.0v -- -- 1 m a xmute pin sink current imtl v xmute =0.5v 0.2 0.5 -- ma hks pin input current ihks vhks=2.5v -- -- 0.1 m a drive current ikbd vn=0v note1 41030 keyboard scanning pin sink current ikbs vn=2.5 note1 200 400 800 m a key-in debounce time t db -- -- 20 -- ms (to be continued)
silan semiconductors SC91710A/b hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 4 (continued) parameter symbol conditions min typ max unit hfi pin input resistor rhfi v dd =2.5 -- 200 -- k w hfo pin drive current ihdoh vhfo=2.0v 0.5 -- -- ma hfo pin sink current ihdol vhfo=2.5v 0.5 -- -- ma pulse mode pulse output pin leakage current ipoh vpo=2.5v 0.1 -- -- m a pulse output pin sink current ipol vpo=0.5v 0.5 -- -- ma -- 10 -- pulse rate fpr -- 20 -- pps -- 40:60 -- make/break ratio t m t b -- 33:66 -- % m/b ratio=40:60 -- 40 -- pre-digit pause t pdp m/b ratio=33:66 -- 33 -- ms pulse rate=10pps -- 800 -- inter-digit pause t idp pulse rate=20pps -- 500 -- ms tone mode dc level vdc v dd =2.0v~5.5v 0.5v dd -- 0.7v dd v sink current itl vdtmf=0.5v 0.2 -- -- ma ac level vdtmf row group r l =10k w 130 155 170 mvrms tone output pin load resistor ri dist. -23db 10 -- -- k w pre-emphasis twist v dd =2.0~5.5 v, column-row group 123db dtmf signal distortion(note 2) dist. r l =10k w -- -30 -23 db minimum tone duration time t td auto redial -- 98/83 -- ms minimum intertone pause time t itp auto redial -- 98/83 -- ms note: 1. vn: input voltage of any keyboard scanning pin (row group, column group) 2 distortion (db) = 20log {[ v 1 2 +v 2 2 +v 3 2 +vn 2 ) 1/2 ] / [ (v l 2 +v h 2 ) 1/2 ]} v l ,v h : row group and column group signal , v1 v2 vn: harmonic signal (bw = 300hz~3500hz actual frequency output (fosc=3.579545mhz) keyboard scanning pin standard(hz) output deviation(%) r1 f1 697 699 +0.28 r2 f2 770 766 -0.52 r3 f3 852 848 -0.47 r4 f4 941 948 +0.74 c1 f5 1209 1216 +0.57 c2 f6 1336 1332 -0.30 c3 f7 1477 1472 -0.34
silan semiconductors SC91710A/b hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 5 pin description pin no. SC91710A sc91710b pin name description 44 c1 11 c2 22 c3 33 c4 14 16 r1 15 17 r2 16 18 r3 13 15 r4 *provides keyboard scanning. * hks pin is low, the column group stays in high state and row group stays in low state. *the keypad is compatible with the standard dual contact matrix keyboard (as figure1b), the inexpensive single contact keyboard (as figure 1a), and electronic input (as figure 1c). *when hks is low, a valid key entry is defined by related row & column connection or by electronic input (as shown in figure 1c). *activation of two or more keys will result in no response, except for single key. *to avoid keyboard-bouncing error, this chip provides built-in debounce circuit. (the debounce time = 20ms) v dd column row column row column v ss v dd v ss row figure1a: single contact form keyboard configuration figure1b: dual contact form keyboard configuration figure1c: electronic signal input keyboard configuration 55osci 66osco *oscillator input & output pins. *the 3.579545mhz oscillator is formed by a built-in inverter inside of this chip and by connecting a 3.579545mhz crystal or a ceramic resonator across the osci and osco pins. (built-in feedback resistor and capacitor) *when hks is low, a valid key-in may turn on this oscillator and generates a 3.579545 mhz clock. (to be continued)
silan semiconductors SC91710A/b hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 6 ( continued ) pin no. sc91710 a sc91710b pin name description 7 7 xmute *mute output pins. *nmos open drain output structure. *the output is in low state during dialing sequence (both pulse and tone mode) otherwise this pin is high-impedance. *long (continue) mute. 8 8 vss *negative power supply pin. 9 11 vdd *positive power supply pin. 10 12 hks *hook switch input pin. *when the handset is in on-hook state, this pin must be pulled high in order to disable the dialing operation and decrease the power consumption. *when in off-hook state, the hks pin must be pulled low state for all function operation. 11 13 po *pulse output signal pin. *nmos open drain output structure. *the output is low during pulse dialing and flash operation, otherwise this output is floating. 12 14 tone *dual tone multi-frequency output pin. *in tone mode, when an entry of digit key (include *, # key), this pin will send out a corresponding dtmf signal. *the tone pin provides minimum tone duration and minimum intertone pause time to support rapid key-in. if key-in time is less than 100ms, dtmf signal will last for 100ms; otherwise the tone duration will last as long as the key is pressed. 9 hfi * handfree input control pin. * toggle input structure, falling edge trigger. * it is used to enable and disable handfree function. * with waveshaped by a built-in schmit trigger, the bounce of input can be eliminated by external r, c debounce circuit. * a built-in pull down resistor is 200k typical. 10 hfo * handfree output control pin. * inverter output structure (normally low, active high). * when a hfi pin is active, handfree function will be enabled (hfo=1) or disable (hfo=0). * when the handfree function is enable (hfo=1), after off-hook action, it can reset handfree function and hfo pin return to low state.
silan semiconductors SC91710A/b hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 7 keyboard operation symbol definitions: a) - : off-hook or enable hand free function. b) : on-hook or disable hand free function. c) : input level from low to high. d) : input level from high to low. e) d1~dn : digit key 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, *, #, (c1~cn is same as d1~dn). f) dp1~dpn : pulse digit 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, (cp1~cpn is same as dp1~dpn). g) dt1~dtn : tone digit 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, *, #, (ct1~ctn is same as dt1~dtn). h) t f :flashtime. i) t p : pause time. j) t pt : pulse to tone wait time. k) t fp : pause time for flash. l) t rp : pause time for redial. m) lnb : last number redial buffer. a normal dialing 1. digit dialing procedure - d1, d2, dn dial out dt1, dt2, dtn (in tone mode) dial out dp1, dp2,, dpn (in pulse mode) lnb d1, d2, dn 2. dialing with flash key procedure - f,d1,d2,dn dial out t f ,t fp , dt1, dt2, dtn (in tone mode) dial out t f ,t fp , dp1, dp2, , dpn (in pulse mode) lnb d1,d2,dn 3. dialing with p ? tkey procedure - d1,d2,p ? t,, dn dial out dp1, dp2, , t pt , , dpn (in pulse mode) lnb d1,d2,p ? t,, dn note: if key in digit over maximum digit stored in lnb, then rd is inhibit even after on/off hook.
silan semiconductors SC91710A/b hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 8 b mixed dialing procedure - d1, d2, p ? t , d9, d10 , dn dial out dp1, dp2, , t pt ,dt9,dt10,dtn lnb d1, d2, p ? t , d9, d10 , dn c redial lnb d1,d2,dn procedure - rd dial out t rp , dt1, dt2, dtn (in tone mode) dial out t rp , dp1, dp2,, dpn (in pulse mode) note: if key in digit over maximum digit stored in lnb, then rd is inhibit. d pause function procedure - d1, d2, dn, p, c1 , cn dial out dt1, dt2 ,, dtn, t p , ct1, ctn (in tone mode) dial out dp1, dp2, dpn , t p , cp1 , cpn (in pulse mode) lnb d1,d2,dn,p,c1,c2,cn e flash function 1. reset procedure - d1, d2, dn, f, c1 , cn dial out dt1, dt2,, dtn , t f ,t fp , ct1 , ctn (in tone mode) dial out dp1, dp2,, dpn , t f ,t fp , cp1 , cpn (in pulse mode) lnb c1,c2,cn handfree function operation: a) to execute handfree function: when hfo = low, hfi pin is active, the handfree function will be enabled (hfo = high) b) reset handfree function: a. off-hook action. b. when hfo = high, a hfi pin is active again, the handfree function will be reset (hfo=low).
silan semiconductors SC91710A/b hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 9 operating flow chart of handfree (3) off hks hf line (2) off hks line (1) on hks hf line (0) on hks initial on hf hf on off hf off hf note: on: on hks; off: off hks; hf: pressed hf key state no. po xmute hfo (0) initial state f f 0 (1) on hks hf line f f 1 (2) off hks line f f 0 (3) off hks hf line f f 1 * f: floating (hi-impedance)
silan semiconductors SC91710A/b hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 10 test circuit a hks v ss mode v dd dp dp dt keyboard operation current 1 2 standby current v+ tone output voltage 3 tone distortion 4 keyboard hks v ss tone v dd v+ keyboard counter and ac meter 10k hks v ss tone v dd v+ spectrum analyzer v 10k a hks v dd v ss v+ hks v ss r* v dd keypad input current (row group) 7 v+ c* row mode a pulse output sink current (open drain structure) 5 6 pulse output sink current (inverter structure) 8 hks v ss r* v dd v+ c* column mode a po flash key hks v ss v dd v+ v vext a po v ss v dd v+ hks v vext a keypad input current (column group) note: 1. dist. (db)=20log {[ v 1 2 +v 2 2 +v 3 2 +v n 2 ) 1/2 ] / [ (v l 2 +v h 2 ) 1/2 ]} a. v1vn are extraneous frequencies (ie, inter modulation and harmonic), components in the 500hz to 3400hz band. b. v l ,v h are the individual frequency components of dtmf signal. c. whether keyboard is pushed refer to the tone mode time diagram. 2. sink current isink=i/(1-duty cycle), i is the net dc current measured from ampere meter. 3. r*, c* mean other column and row.
silan semiconductors SC91710A/b hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 11 timing diagrams 3 2 3 hks key in xmute po tone osco t td t itp t itp normal dialing ......high impedance t db t itp tone mode timming diagram 3 2 3 hks key in xmute po tone osco t td t idp t idp normal dialing ......high impedance t db t pdp t b t m t idp pusle mode timming diagram
silan semiconductors SC91710A/b hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 12 timing diagrams (continued) 3 2 3 hks key in xmute po tone osco t idp t idp ......high impedance t db t itp p t t pdp t pt timming waveform for mixed dialing operation (by p t key entry) f hks key in xmute po tone osco t db t f ......high im pedance flash key operating timming
silan semiconductors SC91710A/b hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 13 timing diagrams (continued) 3 rd hks key in xmute po tone osco ......high im pedance t db 2 t itp t itp t itp t d t itp tone mode redial timming diagram 3 rd hks key in xmute po tone osco ......high im pedance t db 2 t idp t idp t idp t idp t rp pulse mode redial timming diagram
silan semiconductors SC91710A/b hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 14 timing diagrams (continued) xmute po tone osco ......high im pendance t db t itp t p t itp 3 3 hks key in xmute po tone osco t db p t pdp t idp 2 t idp t idp t p t itp pause key operating timming *tone mode *pulse mode
silan semiconductors SC91710A/b hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 15 typacal application circuit SC91710A 14 15 16 13 3 2 1 4 8 11 9 10 12 5 6 7 2wrieto4wire speech network v ss v dd tone osci osco 2.2k 100k 330k 100k 22m mpsa92 100 f 16v 1n4148x2 2k 470k on/off hook tip ring 1n4004x4 100k c945 1 f 3.579545mhz tone 10pps 20pps znr 120v p t f p r/p 3 6 9 # 2 5 8 0 1 4 7 * xmute to handset hks 5.1v 100 f 16v 1 f 1n4148 mpsa42 240k po vdd 820k x5 r1 r2 r3 r4 c4 c3 c2 c1
silan semiconductors SC91710A/b hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 16 typacal application circuit sc91710b 14 15 16 13 3 2 1 4 8 13 12 11 10 5 6 7 2wrieto4wire speech network & audio amplifier v ss v dd hfo osci osco 100k 22m mpsa92 1n4148 hook on/off tip ring 1n4004x4 3.579545mhz tone 10pps 20pps znr 120v p t f p r/p 3 6 9 # 2 5 8 0 1 4 7 * xmute to handset hks 1 f po vdd 820k x6 r1 r2 r3 r4 c4 c3 c2 c1 9 hfi 14 tone 200k c945 1 f 240k 3.3k 330k 470k 47k 47k 100k c954 100 f 16v 5.1v 2.7k 0.2 f 200k c954 1 f hf key
silan semiconductors SC91710A/b hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 17 chip topography size: 1.45 x 1.54 mm 2 pad coordinates (unit: m m) no. symbol x y no. symbol x y 1 p1 -542.6 -238.0 10 p10 562.4 88.5 2 p2 -542.6 -468.1 11 p11 562.4 252.4 3 p3 -542.6 -602.5 12 p12 562.4 445.8 4 p4 -315.0 -602.5 13 p13 562.4 603.8 5 p5 -134.8 -602.5 14 p14 148.6 603.8 6 p6 85.5 -602.5 15 p15 -22.4 603.8 7 p7 562.4 -439.1 16 p16 -251.0 603.8 8 p8 562.4 -277.6 17 p17 -542.6 124.7 9 p9 562.4 -93.6 18 p18 -542.6 -102.9 note: the original point of the coordinate is the die center.
silan semiconductors SC91710A/b hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 18 package outline dip-16-300-2.54 unit: mm 6.40 2.54 3.51 5.08 3.30 7.62 0.25 15 degree 0.46 19.4 1.50 dip-18-300-2.54 unit: mm 6.40 2.54 3.51 5.08 3.30 7.62 0.25 15 degree 0.46 22.95 1.50

▲Up To Search▲

Price & Availability of SC91710A

	To Download SC91710A Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .