View IL91210E_1765085.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

technical data IL91210E tone/pulse dialer high-performance silicon-gate cmos ordering information IL91210En t a = -20 to 7 0 c the IL91210E is a single-chip, silicon gate, cmos integrated circuit with an o n - ch ip o s cillato r fo r a 3 . 5 8 mhz crystal o r ceram ic reso n a to r. it provides dialing pulse (dp) or dual tone m u lti-frequency (dtm f) di al i ng. a st andard 4x4 m a t r i x key board can be used t o support ei t h er dp or dtm f m odes. up t o 32 di gi t s can be saved i n t h e on-chi p r a m for readi ng. in t h e dtm f m ode, m i ni m u m t one durat i on and m i ni m u m i n t e rt one pause are provi ded for rapi d di al i ng. m a xi m u m t one durat i on i s dependent upon t h e key depressi on t i m e i n m a nual di al i ng. ? one t ouch redi al operat i on ? tone/ p ul se swi t c habl e ? 32-di gi t capaci t y for redi al i ng ? aut o m a t i c m i xed redi al i ng (l ast num ber redi al ) of pul se t o dtm f with m u ltiple autom a tic access pauses ? pab x aut o -pause i s 2.2 second ? dtm f ti m i ng: m a nual di al i ng: m i ni m u m durat i on for burst s and pauses red i alin g : calib rated tim in g ? w i de operat i ng vol t a ge range: 2 v t o 5.5 v ? dig its d i aled m a n u a lly after red i ali ng are cascadabl e and st ored as addi t i onal di gi t s for t h e next redi al i ng ? uses inexpensive ceram ic resonator (3.58 mhz) ? bu ilt-in p o w er u p reset circu it ? four ext r a funct i on key s : fl ash, pause, redi al and dp or dtm f m i xed di al i ng ? four-by -four (or 2 of 8) key board can be used ? low st andby current ? dial pu lse rate: 1 0 p p s pin assignment
IL91210E logic diagram pin 11 = gnd pin 10 = v cc keyboard assignments* 1 2 3 f 1 r 1 4 5 6 f 2 r 2 7 8 9 p r 3 */ t 0 # r d r 4 c1 c 2 c3 in tern a l pu l l low *not es: 1. * / t - at pu lse m o d e th is k e y wo rk s as pu lse -> dtmf key (t key ) , at dtm f m ode t h e key works as *key . * / t k e y will o ccu p y o n e m e m o ry d i g it in eith er m o d e . 2. f1 - flash key. the break tim e is 96 m s . 3. f2 - fl ash key for break t i m e 640 m s . 4. p -- pause key (2.2 seconds). 5. r d - one key redi al key . 6. # - at pul se m ode t h i s key i nput i s negl ect ed, at dtm f m ode t h i s key works as # key .
IL91210E pin description pin no. designation description 1 r 1 2 r 2 3 r 3 4 r 4 5 hk hook swi t c h i nput . thi s i nvert er i nput pi n det ect s t h e st at e of t h e hook swi t c h cont act . ?off hook? is represented by a gnd conditi on. ?on hook? is represented by a v cc condi t i on. 6 m / b m a ke/ b reak r a t i o sel ect input . thi s i nput al l o ws sel ect i on of t h e m a ke/ b reak rat i o . m/b = v cc : 1/ 2 m / b = gnd : 2/3 7 mode select m ode select input. thi s i nput al l o ws t h e sel ect i on of pul se m ode or dtm f m ode. mode select = v cc : pul s e m ode operat i on mode select = gnd : tone m ode operation 8 9 osci osc0 oscillator input a nd output pins. the tim e base for IL91210E is a crystal controlled on-chip oscillator, which i s com p l e t e d by connect i ng a 3.58 m h z cry s t a l or ceram i c resonat o r bet w een osc i and osc 0 pi ns. 1 0 v cc 1 1 g n d 12 tone tone di al i ng out put . w h en a v a lid k e yp ress is d e tected in th e dtmf m o d e , ap p r o p r iate lo w group and hi gh group frequenci e s are gene rat e d, whi c h hy bri d i ze t h e dual t one out put . tone out put i s i n t h e ?off? st at e i n pul se m ode. 13 xm itm u te di al i ng t r ansm i ssi on m u t e out put . thi s i s an n-channel open drai n out put the xm im ute i s norm a l l y ?off?. duri ng pul se or dtm f di al i ng t h i s out put i s ?on?. 14 dp di al i ng pul se out put . th is is an n-ch an n e l o p e n d r ain o u t p u t . th e n o r m a l o u t p u t will b e ?on? duri ng b r eak and ?off? duri ng m a ke i n t h e pul se di al i ng m ode. 1 5 c 1 1 6 c 2 1 7 c 3 1 8 c4 in tern al pu ll lo w. key board pi ns. these inputs serve as the inte rface to a 4x4 m a trix keyboard. power suppl y pi ns. thi s devi ce i s desi gned t o operat e from 2.0 v t o 5.5 v. key board pi ns. these inputs serve as the inte rface to a 4x4 m a trix keyboard.
IL91210E operation procedures symbol definitions: in t h e descri pt i on bel o w, si gnal s are defi ned i n t e rm s of th e k e y o r switch wh ich is activ ated . off hook m eans t h e phone was t a ken off t h e hook. on hook m eans that the receiver is onf the hook. d1 st ands for t h e fi rst di gi t di al ed i n a st ri ng of di gi t s . dn st ands for t h e l a st di gi t di al ed i n a st ri ng of di gi t s . dn+1 st ands for t h e begi nni ng of a new st ri ng of di gi t s . dn+m st ands for t h e l a st di gi t i n a new st ri ng of di gi t s . */ t is th e pu lse-to -dtmf k e y rd is th e red i al k e y o is th e zero k e y. p is th e pau s e k e y. f is th e flash k e y. 1. pul s e m ode operat i on a. off hook d1 . . . . . . dn pu lse m o d e is d e fin e d as th e in itial m o d e , p r o v i d e d t h e fi rst key board i nput i s not t h e */ t key fol l o wi ng the off hook condition and th e m ode selection pin is v cc (mode select = v cc ). b . pu lse m o d e is d e fin e d as th e in itial m o d e , p r o v i d e d t h e key i nput d1 i s not */ t whi l e t h e m ode sel ect i on pi n i s v cc . the chip will pause for 824 m s autom a tically after it detects an off hook condition. it then proceeds with pulse or dtmf dialing if any key s have been depressed. the di al i ng rat e or m a k e /b reak ratio is d ecid e d at th e first k e y en try b y checking the mode select & m/b status and will not be altered. the mode select status can only switch th e d i alin g m o d e fro m pu lse to dtmf after th e first k e y en try. 2. dtm f m ode operat i on a. off hook d1 . . . . . . dn dtmf m o d e is d e fin e d as th e in itial m o d e o f th e m ode selection pin if mode select is gnd. b. off hook */ t d1 . . . . . . dn th e in itial m o d e is p u l se m o d e if th e m o d e selectio n pin, mode select, is v cc . the */t key can swi t c h t h e di al i ng m ode t o t one m ode. unl i k e norm a l m ode swi t c hi ng, t h e */ t key ent r y , as the first key pressed, will not produce any pause t i m e. there are onl y 31 di gi t of redi al m e m o ry avai l a bl e i n t h e buffer t o be used for operat i ons a an d b , sin ce th e m o d e switch i n g k e y, * / t , will occupy one digit of space. 3. manual dialing with autom a tic access pause off hook o */ t d1 . . . . dn pause key entries can be accepted and stored in the redial m e m o ry. each is stored as a digit. each key-in will provide a pause of 2.2 seconds, depending on whi c h m odel y ou are usi ng. 4. r e di al a. off hook rd up t o 32 di gi t s (i n pul se m ode) or 31 di gi t s (i n t one m ode) can be di al ed usi ng t h e r d i s di sabl ed whi l e p u l se o r to n e sig n a ls are b e in g tran sm itted . red i al will also b e in h i b ited if th e last n u m b e r d i aled exceeds 32 digits because the redial m e m o ry can onl y hol d 32 di gi t s . b. off hook rd d1 . . . . . . dn aft e r pressi ng t h e r d key , we can add di gi t s t o t h e num ber i n redi al m e m o ry . w h en fi ni shed di al i ng, t h e red i al m e m o ry will co n t ain th e o r ig in al d i g its p l u s the digits dialed after pressing rd. each tim e the red i al k e y is p r essed , th e sto r ed n u m b e r will b e dialed exactly the sam e as it was previously, regardless of the status of the mode select pin. 5. tone/ p ulse swi t c hi ng operat i on a. off hook d1 . . . dn mode select pin pulse mode switched to gnd dn+1 . . . . dn+m dtmf mode the m ode sel ect i on pi n i s al way s checked for t one or pul se m ode key ent r y . di al i ng can be swi t c hed from pul se t o t one m ode, but not from t one t o pul se m ode. switching the mode select pin to gnd will cau se th e ch ip to sto r e a * / t d i g it p r io r to th e first to n e d i g it in th e red i al m e m o ry an d will aut o m a t i cal l y i n sert a 2.2 second pause before t h e t one di gi t s are di al ed out . aft e r t h e m ode has been switch e d , th e statu s o f th e m o d e selectio n p i n will n o longer be checked. therefore, it will not be possible t o swi t c h from t one t o pul se m ode.
IL91210E b. off hook d1 . . . dn */t dn+1 pulse mode dn+m dtm f m ode if t h e di al i ng of d1 t o dn i s com p l e t e d, pressi ng r d will cau se th e p u l se d i alin g p i n to g o lo w fo r 2.2 seconds of break tim e and an 824 m s pause will aut o m a t i cal l y be added. ot herwi s e, t h e pressi ng of the redial key will be ignored. pu lse m o d e is in itially d e fin e d with th e m o d e selection pin, mode select, equal to v cc . at th is t i m e, t h e m ode can be swi t c hed t o dtm f by p r essin g th e * / t k e y. dtmf m o d e will b e g i n as soon as the last pulse has been transm itted. in this m ode, dn+1 t h rough dn+m are sent t h rough t h e tone out pi n as dtm f si gnal s . if a p key ent r y i s cont ai ned i n t h e seri es of di gi t s before or aft e r t h e */t entry, or the mode select switch is depressed, 2.2 second pause will be added to the au to m a tically in serted p a u s e tim e, wh ich is also 2.2 seconds. b o t h of t h e above swi t c hi ng m odes can st ore as m a ny as 31 di gi t s i n t h e redi al m e m o ry . 6. one-key redi al i ng off hook d1 . . . . . . dn rd 7. fl ash di al i ng off hook f d1 . . . . . . dn the fl ash key s em ul at e qui ck on-off hook o p e ratio n s . pressin g th e flash k e ys, f1 o r f2 , will cause a break of 96 m s or 640 m s on t h e dp out put pin. then, it will pause for 824 m s and continue d i alin g th e d i g its, d1 to dn . th ese d i g its are th en stored in the redial m e m o ry. each tim e the flash key is p r essed , th e red i al m e m o ry will b e cleared to sto r e a new entry. in addition, the mode select status will b e ch eck ed ag ain fo r th e settin g o f th e tone/ p ul se di al i ng m ode. sim ilarly, to m a k e su re th at th e ic is wo rk in g properly, new flash key i nputs will be ignored as l ong as t h e di gi t s t h at were di al ed have not fi ni shed. maximum ratings * s y m b o l p a r a m e t e r v a l u e u n i t v cc dc suppl y vol t a ge (referenced t o gnd) -0.3 t o +6.0 v v in dc input vol t a ge (referenced t o gnd) -0.3 t o v cc +0.3 v v out dc output voltage (referenced to gnd) -0.3 to v cc +0.3 v v out dc output voltage (dp, xm itm u te) -0.3 to 1.2 v i tone dc out put c u rrent (tone) 50 m a p d po wer dissip a tio n in still air, plastic dip ** 5 0 0 m w tst g st orage tem p erat ure -40 t o +125 c * m a xi m u m r a t i ngs are t hose val u es bey ond whi c h dam a ge t o t h e devi ce m a y occur. functional operation should be restricted to the reco m m e nded operating conditions. ** durat i ng: -10 mw / c from 65 c to 7 0 c.
IL91210E recommended operating conditions s y m b o l p a r a m e t e r m i n m a x u n i t v cc dc suppl y vol t a ge (referenced t o gnd) 2.0 5.5 v v in dc input vol t a ge (referenced t o gnd) 0 v cc v v out dc output voltage (referenced to gnd) 0 v cc v t a operat i ng tem p erat ure -20 +70 c thi s devi ce cont ai ns prot ect i on ci rcui t r y t o guard agai ns t dam a ge due t o hi gh st at i c vol t a ges or el ect ri c fi el ds. however, precautions m u st be taken to avoid applications of any voltage highe r than m a xim u m rated voltages to this hi gh-i m pedance ci rcui t . for proper operat i on, v in and v out shoul d be const r ai ned t o t h e range gnd (v in or v out ) v cc . unused i nput s m u st al way s be t i e d t o an appropri a t e l ogi c vol t a ge l e vel (e.g., ei t h er gnd or v cc ). unused out put s m u st be l e ft open. dc electrical characteristics (voltages referenced to gnd, v cc =2.0 v to 5.5 v, t a = -20 to +70 c) g u a r a n t e e d l i m i t s s y m b o l p a r a m e t e r test c o n d i t i o n s m i n m a x u n i t v ih hi gh-level input vol t a ge 0.8v cc v cc v v il low-level input vol t a ge 0 0.2v cc v v mr m i n i mu m m e mo r y reten tio n vo ltag e v cc = 1.0 v 1.5 v v oc tone out put vol t a ge co lu m n v cc = 3.5 v 400 1000 m v p-p v or tone out put vol t a ge ro w r l = 5k ? 3 0 0 8 0 0 m v p-p i r input c u rrent (r 1 - r 4 , c1 - c3 ) v cc = 3.5 v v il = 0 v 1 0 3 0 0 a i ol1 m i ni m u m out put c u rrent , xmitmute v cc = 3.5 v v ol = 0.4 v 0 . 5 m a i ol2 m i ni m u m out put si nk current, dp v cc = 3.5 v v ol = 0.4 v 0 . 6 m a i mr m e m o ry r e t e nt i on c u rrent v cc = 1.0 v, hk = v cc al l out put s unl oaded 0 . 6 a i ccp pul s e m ode 1.5 ma i cct m a xi m u m operat i on current tone m ode al l out put s unl oaded 3 . 0 ma i sbp pul s e m ode hk=v cc =1.5 v 0 . 0 5 a i sbt m a xi m u m st andby current tone m ode hk=gnd al l out put s unl oaded. no key selected 1 5 dis% di st ort i on *not e 1, v cc = 3.5 v 7 % note 1: dis% = a. v 1 . . . v n are t h e i n t e rm odul at i on or t h e harm oni c frequenci e s i n t h e 500 hz t o 3400 hz band. 100.(v 1 2 + v 2 2 +. . . + v n 2 ) 1 / 2 (v oc 2 + v or 2 ) 1 / 2 b. v oc and v or are t h e i ndi vi dual frequency com ponent s of t h e dtm f si gnal .
IL91210E ac electrical characteristics (all voltages referenced to gnd. v cc = 2.0 v t o 5.5 v, t a = - 20 t o +70 c) g u a r a n t e e d l i m i t s s y m b o l p a r a m e t e r t e s t conditions m i n m a x u n i t m / b = 1/ 2 30 35 t m m a ke ti m e (fi gure 1) m / b = 2/ 3 38 42 m / b = 1/ 2 64 69 ms t b break tim e (figure 1) m / b = 2/ 3 57 63 ms t idp int e r di gi t pause ti m e (fi gures 1,2,3) 800 850 m s t pau pause ti m e (fi gures 3,5) 2.1 2.3 sec t robk aut o -redi al b r eak ti m e (fi gure 4) 2.1 2.3 sec t d delay tim e key v a lid to sig n a l ou tp u t (fi gures 1,2,3) 0 3 . 0 m s t kd key - i n debounce (fi gure 1) 20 25 m s t krd key -rel ease debounce 3.0 5.0 m s t ktd key - i n tone durat i on 21 25 m s t mfd m i ni m u m tone durat i on ti m e (fi gures 2,3) 9 2 9 6 m s t tidp min i m u m to n e in ter-d ig it pau s e (fi gure 2) 9 4 9 8 m s t mfdr r e di al tone durat i on (fi gure 2) 92 96 m s t tidpr red i al to n e in ter-d ig it du ratio n (fi gure 2) 9 4 9 8 m s comparisons of specified vs. actual tone frequencies r / c s p e c . a c t u a l error(% ) u n i t c o n d i t i o n s r 1 6 9 7 6 9 9 . 1 + 0 . 3 1 h z r 2 7 7 0 7 7 1 . 5 + 0 . 1 9 h z r 3 8 5 2 8 5 2 . 3 + 0 . 0 3 h z r 4 9 4 1 9 4 2 . 0 + 0 . 1 0 h z f osc = 3.579 m h z c 1 1 2 0 9 1 , 2 1 5 . 7 + 0 . 5 7 h z c 2 1 3 3 6 1 , 3 3 1 . 7 - 0 . 3 2 h z c 3 1 4 7 7 1 , 4 7 1 . 9 - 0 . 3 5 h z
IL91210E figure 1. pulse mode (i) no rma l dia ling (ii) after (i), redia ling fi gure 2. t o ne mode
IL91210E (i) by mode selection pin switches (i i ) b y */ t key entry figure 3. switching mode operation figure 4. one key redial (dtmf mode for example)
IL91210E tfsh : fl ash t i m e (f1 : 96 m s , f2 : 640 m s ) fi gure 5. fl ash di al i n g (dt m f mode for exampl e) expanded logic diagram
IL91210E n s u f f i x p l as t i c di p (m s - 0 0 1 a c ) sy m b o l m i n m a x a 22. 35 23. 37 b 6. 1 7 . 1 1 c 5. 33 d 0. 36 0. 56 f 1. 14 1. 78 g h j 0 10 k 2. 92 3. 81 no t e s : l 7. 62 8. 26 1. d i m e n s i o n s ?a ?, ?b ? d o n o t i n cl u d e m o l d f l as h o r p r o t r u s i o n s . m 0. 2 0 . 3 6 m a x i m u m m o l d f l a s h o r p r o t r u s i o n s 0. 25 m m ( 0 . 010) p e r s i d e . n 0. 38 2. 54 7. 62 d i me n s i o n , mm l h m j a b f g d se a t i n g pl an e n k 0.2 5 ( 0 . 010 ) m t -t - c 1 18 9 10

▲Up To Search▲

Price & Availability of IL91210E

	To Download IL91210E Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .