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silan semiconductors sc91415 series hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 1 tone/pulse switchable dialer with lcd interface and dual-tone melody description the sc91415 is a series of tone/pulse switchable dialers that is composed of t/p dialer and t/p dialer with 13 set memories. the sc91415 series provide necessary functions of telephone set for application in any environment, such as pulse dialing, tone (dtmf) dialing, handfree dialing, keying tone and lock functions. the lock function is designed to inhibit toll dialing operation. beside this, melody generator, ring detector and sdo (serial data output) functions are provided in advance version. melody generator will output dual-tone music in line hold duration. ring detector can prevent illegal dialing from pocket dialer. the sdo is designed to drive lcd driver and voice synthesizer. features *tone/pulse switchable *wide operating voltage from 2.0 v to 5.5 v *low operating current, 0.15ma (pulse) and 0.3ma (tone) typically *adding resistor on keyboard scan pin that can select many tele- phone specifications, such as: pulse rate, m/b ratio, flash time, lock dialing functions. *lock function provides conventionality key lock and password lock operations *ring detector is designed to prevent illegal dialing from pocket dialer *13 set one touch or (3 set one touch and 10 set two touch) repertory memory, each one can hold data up to 16 digits *a 32-digit lnb (last number) redial memory *handfree function provides on-hook dialing and speakerphone application *pause and p-t time are fixed to 3.6 seconds *tone duration and inter-tone pause time are fixed to 98 ms *using 3.579545 mhz crystal or ceramic resonator dip-22 dip-18 *sdo function supports lcd driver and voice synthesizer to indicate dialing numbers. *line hold function is designed for stopping conversation temporality *melody generator provides music on hold function *keytone function provides rapidly keying recognition ordering information sc91415ap dip-18 package SC91415BP sc91415ck sc91415dk dip-20 package dip-22 package dip-24 package
silan semiconductors sc91415 series hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 2 pin configurations 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 sc91415ap col4/kt col3 col2 col5 vdd xin xout row1 v ss po row4 row3 hdo hks xmute 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 SC91415BP dtmf xout v ss xmute hks row2 row1 v dd 20 19 18 17 col5 dtmf row3 col1 row2 hfo hdo po row4 col3 col2 col1 col4/kt xin hfi 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 sc91415dk 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 sc91415ck xin xout v ss xmute hks row1 vdd 21 20 19 18 17 22 row6 hfo row2 row5/ sdo hfi po row4 row3 hdo col4/kt col3 col2 col5 col1 24 23 22 21 20 19 dtmf xin xout v ss xmute row6 hfi c ol4/kt col3 col2 col5 col1 dring hks row1 vdd hfo row2 row5/ sdo po row4 row3 hdo dtmf rmute versions list and function outline version lnb kt hold(music) lock hf sdo(lcd) pdp sc91415a sc91415b sc91415c sc91415d note: pdp = pocket dialer prevented
silan semiconductors sc91415 series hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 3 block diagram output circuit row/column programming counter memory (melody) latch & decoder d/a converter timing/control circuit keyboard interface (column) oscillator keyboard interface (row) input circuit pulse generator col1 col2 col3 col4 /kt col5 xin xout row1 row6 sdo hfo hdo dtmf vdd hks hfs dring po xmute rmute vdd keyboard assignment col1 col2 col3 col4/kt col5 row1 1 2 3 hd em1 row2 4 5 6 f em2 row3 7 8 9 a em3 row4 */t 0 # rd/p st row5/sdo m1 m2 m3 m4 m5 row6 m6 m7 m8 m9 m10 note: row5/sdo: option by col5, when row5 is selected by r option (col5), there are 13 sets one touch memory version in sc91415c/d provided.
silan semiconductors sc91415 series hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 4 dialing signal option the sc91415 series incorporated a special keyboard scanning function that is connecting a resistor (typically is 560 k w ) on keyboard scan pin to select many telephone specifications. the specifications are described as following : a. mode b. m/b ratio row1 mode row2 mbr (%) r-v dd 20pps nr 40:60 nr tone r-vss 33:66 r-vss 10pps c. flash time d. lock control method row3 row4 tf (ms) col1 control method nr nr 600 r-vdd key lock nr r-vss 100 nr none lock r-vss nr 80 r-vss password lock r-vss r-vss 300 e. lock number f. row5/sdo pin functions col2 col3 lock number col5 row5 or sdo pin nr nr none nr sdo nr r-vss 0 r-vss row5 r-vss nr 9 r-vss r-vss 0.9 (note): if select sdo function, the memory type is (1t*3+2t*10) if select row function, the memory type is (1t*3+2t*10) and (1t*13) 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 v ss -0.3~v dd +0.3 v power dissipation p d 500 mw operating temperature topr 0~+50 c storage temperature tstg -55~+125 c
silan semiconductors sc91415 series hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 5 electrical characteristics (tamb=25 c, v dd =2.5v, fosc=3.579545mhz, all voltage referenced to v ss, unless otherwise specified) parameter symbol test conditions min typ max unit tone 2.0 -- 5.5 operating voltage v dd pulse unload 2.0 -- 5.5 v pulse -- 0.15 0.3 tone unload -- 0.3 0.5 pulse -- 0.15 0.3 operating current ( hks =0) i dd tone with pull up/down resistor *8 -- 0.3 0.5 ma on-hook off-hook unload on-hook standby current istby off-hook with pull up/down resistor *8 -- 0.1 1.0 m a memory retention current imrt on-hoo k v dd =1.0v -- 0.001 0.1 m a vil -- v ss 0.2v dd hks , hfi & dring pins: input voltage vih -- 0.8v dd v dd v hfo & hdo pins source current ioh vo=2.0v 0.2 -- -- ma po , xmute , rmute &sdo pins leakage current ioh vo= v dd -- -- 0.001 m a po ,hfo, xmute , rmute & sdo pins sink current iol vo=0.5v -0.2 -- -- ma dring pin input resistance rdring vdring = v ss -- 100 -- k w hfi pin input resistance rhfi vhfi = v ss -- 200 -- k w ioh vksn=v ss 21050 keyboard scanning pins output current(except col4/kt) iol vksn=v dd 21050 m a ioh vo=2.0v 0.2 -- -- col4/kt source current sink current iol vo=0.5v 0.2 -- -- ma keyboard debounce time tdb -- -- 20 -- ms frequency fkt -- -- 600 -- hz key tone signal duration tkt -- -- 30 -- ms pause time tp -- -- 3.6 -- sec. pulse to tone waiting time tpt -- -- 3.6 -- sec. row3b, row4b=nr,nr -- 600 -- row3b, row4b=nr,r-vss 100 row3b, row4b=r-vss,nr 80 flash time tf row3b, row4b=r-vss,r-vss -- 300 -- ms (to be continued)
silan semiconductors sc91415 series hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 6 (continued) parameter symbol test conditions min typ max unit row1=r-v dd -- 20 -- pulse rate psr row1=r-v ss -- 10 -- pps row2=nr -- 40:60 -- make/break ratio mbr row2=r-v ss -- 33:66 -- % psr=10pps -- 800 -- inter-digit pause time tidp psr=20pps -- 500 -- ms dtmf pin: sink current iol vdtmf=0.5v -0.2 -- -- ma dtmf signal dc level vdc v dd =2.0v~5.5v 0.5 -- 0.75 v ac level vdtmf row group 142 160 180 mv pre-emphase twist column C row 1 2 3 db distortion thd rl=5k w -- -30 -23 db dtmf signal load resistance zl thd<-23db 5 -- -- k w minimum tone duration time tp -- 96 98 100 ms minimum intertone pause time t itp memory dialing 96 98 100 ms -- -23.3 -- main tone ac level vmtac v dd =2.0v~5.5v 48 53 58 (dbm) mv -- -25.3 -- melody output signal sub-tone vstac v dd =2.0v~5.5v 37 42 47 (dbm) mv hd key release hold function debounce time thdrdb -- -- 280 -- ms sdo every bit time tbit -- 3.8 3.9 4.1 ms off-hook delay time tdly -- -- 300 -- ms dtmf frequency output (fosc=3.579545mhz) keyboard scanning pin ccitt standard(hz) actual output deviation(%) row1 (f1) 697 699.1 +0.30 row2 (f2) 770 766.2 -0.49 row3 (f3) 852 847.4 -0.53 row4 (f4) 941 947.9 +0.73 col1 (f5) 1209 1215.8 +0.56 col2 (f6) 1336 1331.6 -0.32 col3 (f7) 1477 1471.8 -0.35
silan semiconductors sc91415 series hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 7 pin description pin no. ap bp ck dk pin name description 13 15 16 18 row1 14 16 17 19 row2 15 17 18 20 row3 16 18 19 21 row4 -- -- 22 24 row5 -- -- 1 1 row6 keyboard scan pins of row group. in idle state ( hks is high and hfo is low), these pins stay high impedance level to prevent power consumption. otherwise, these pins switch to high level for detecting keyboard entry. these pins will output 600hz signal while keyboard is scanning. 5566col1 4455col2 3344col3 1122col5 keyboard scan pins of column group. in idle state, these pins stay high impedance level. otherwise these pins switch to low level for detecting keyboard entry. these pins will output 600hz signal while keyboard is scanning. 2233col4/kt the fourth column group pin of the keyboard that also provides the keytone output. normally, this pin stays low level for detecting keyboard entry. after a valid keyboard entry, this pin will output keying confirmation tone that is 600 hz signal and 30 ms duration. to prevent signal interference, while dtmf issue, it will disable key tone output except function key. 6677 xin 7788xout oscillator input and output pins. a 3.579545mhz crystal or ceramic resonator must be crossed connection to xin and xout pins which generate system clock. 8899 xmute the tone/pulse mute signal output pin that is nmos open-drain output structure. this pin will switch to low level during tone/pulse dialing and hold function. otherwise, this pin stays high impedance level. 11 13 14 16 vdd 9 9 10 10 vss positive and negative power supply input pins. recommended operating voltage from 2.0vdc to 5.5vdc. -- 10 11 11 hfi handfree inputs pin which accepts falling edge signal to turn on or turn off handfree function. this pin is hysteresis input structure and built-in pull up resistor (typically 200k w ). -- 11 12 14 hfo handfree outputs pin that is designed to control telephone line for on-hook dialing or control speakerphone circuit for handfree conversation. when handfree function is executed, this pin will switch tohigh. otherwise, this pin stays low level. 10 12 13 15 dtmf the dtmf (dual tone multi-frequency) and music signals output pin. normally, this pin stays low level. in tone dialing mode, this pin will output dtmf signal that is corresponding to keyboard 0 . 9, * and # keys. beside this, in the line hold duration, this pin will issue dual-tone music for telephone line. (to be continued)
silan semiconductors sc91415 series hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 8 (continued) pin no. ap bp ck dk pin name description 12 14 15 17 hks control signal inputs pin that is corresponding hook switch status. when handset was left from cradle, this pin must be connected to low level to operate all functions. otherwise, this pin must be connected to high level to disable all function and prevent power consumption. 17 19 20 22 po pulse signal outputs pin that is nmos open-drain output structure. normally, this pin stays high impedance level. in pulse dialing mode and keypad was entry. this pin will output pulse trains signal that is corresponding to keyboard 0 .. 9 keys. 18 20 21 23 hdo hold function output that is cmos structure. normally, this pin stays low level. when hold function is executing, this pin will output high level. this pin is designed to drive led or peripheral circuit to indicate line is at hold status. -- -- 22 24 sdo sdo function output that is nmos open-drain structure. when there is a valid entry on keyboard, this pin will output a serial data. this serial data is designed to drive lcd driver to display dialing number on lcd screen or drive voice synthesizer to announce dialing number to speaker. -- -- -- 12 dring the ring signal detect input pin which is internal pull up (built-in 100 k w resistor). while the tel-ring is incoming, this pin must be connected to low with delay to indicate the ringing . otherwise, this pin must be connected to high level . -- -- -- 13 rmute ring mute output pin that is nmos open-drain structure. the rmute pin is designed to control microphone of handset to prevent the illegal dialing from pocket dialer. if the dring pin is at high level , then off-hook or turn on handfree, this pin will output low level. in other words, the dring pin is used to check the phone that receives an incoming call ( dring =low input) or make an outgoing call ( dring = high input) . if the phone user make an outgoing call ,then rmute pin activated to prevent the illegal dialing from pocket dialer in the particular application. the rmute canberestoredtohighlevelwhenthefirstkeyentryisnotthe optioned lock-number .
silan semiconductors sc91415 series hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 9 function descriptions a normal dialing directly keying digital key on keyboard which number can be dialing output and stored in lnb memory automatically. operating procedure described as follow : * to select pulse or tone mode. * off-hook or turn on hf function. * keying d1, d2, .. , dn. the d expressed digital keypad that included 1~9, *, 0, #, p, and p ? t keys. the n expressed unlimited. * the numbers d1, d2, .. , dn will be dialed out in pulse or tone mode as selection. b lnb redial memory storing: in normal dialing mode, every digital key was entry which number will be stored in lnb memory automatically. if entry digits are more than 32 digits, the redial function of lnb memory will be disabled. otherwise, these numbers stored in lnb memory can be redial output. redialing: after normal dialing, directly keying f key (or on-off hook once) and keying rd key on keyboard. the numbers that are stored into lnb memory will be dialed output. c repertory memory the sc91415 series incorporated several sets repertory memory and each one can store number up to 16 digits. in memory storing, if stored numbers are more than 16 digits that only the previous 16 digits can be stored into specific memory. otherwise, these numbers can be stored entirely. after memory dialed out, the content of lnb is keeping to current data. storing of 13 sets memory types direct (one-touch) operation off-hook (or turn on hf function), push (st, d1, d2, .. , dn [st], emn or m1~m10 (row5 optioned). the numbers d1, d2, .. , dn will be stored into memory location emn or mn. the emn expressed emergency memory em1 to em3. the mn expressed memory m1~m10. indirect (two-touch) memory operation off-hook (or turn on hf function), push (st, d1, d2, .. , dn, st, n.) the numbers d1, d2, .. , dn will be stored into memory location n. the n expressed digital key from 0 to 9.
silan semiconductors sc91415 series hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 10 dialing (after memory dialed out, the content of lnb is keeping to current data) direct (one-touch) memory operation * to select pulse or tone mode. * off-hook (or turn on hf function), push mn (or emn) key. the numbers that are stored in direct memory location mn (or emn) will be dialed out in pulse or tone mode as selection. the n expressed digital number from 1~10 decided by dialers memory sets. indirect (two-touch) memory operation * to select pulse or tone mode. * off-hook (or turn on hf function), push a, n key. the numbers that are stored in indirect memory location n will be dialed out in pulse or tone mode as selection. the n expressed digital key from 0 to 9. pause (p) key operation the pause (p) key is designed to support pause operation in dialing duration. p key can be stored in memory and it will occupy one digital position. * to select pulse or tone mode. * off-hook (or turn on hf function), push (d1, d2, .. , dn, rd/p, k1, k2, .. , kn.) these numbers will be dialed out as following sequence: d1, d2, .. , dn, tp, k1, k2, .. , kn pulse to tone (*/t) key operation the pulse to tone (*/t) key is designed to support toll dialing (long distance call) or pabx system operation. the */t key can be stored in memory and it will occupy one digital position. * to select pulse mode. * off-hook (or turn on hf function), push d1, d2, .. , dn, */t, k1, k2, .. , kn. these numbers will be dialed out as following sequence: d1, d2, .. , dn, tpt, k1, k2, .. , kn. (pulse mode) (tone mode) flash (f) key operation the flash (f) key is designed to break telephone line temporarily. after f key is depressed, this dialer will send a flash signal to break line 600 ms, 300 ms, 100 ms or 80 ms as row3 and row4 selection.
silan semiconductors sc91415 series hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 11 d) handfree (hf) function the handfree function is designed to support on-hook dialing and loudspeaker application which can be turn on or off with falling edge signal from hfi pin. during handfree function is executed, the hfo pin is switched to high. otherwise the hfo pin stays low level. one of the following operations can turn off handfree function (hfo pin return to low). * on-off hook once. * trigger hfi pin with falling edge signal. * turn on hold (hd) function. (hdo pin switched to high) e) hold (hd) function the hold function is designed to stop conversation temporarily. in off-hook state (or hf function is turned on), to press hd key on the keyboard, the hold function can be turned on (hdo pin switched to high). one of the following operations can turn off hold function (hdo pin switched to low). * on-off hook once. * to press hd key over 280 ms. * turn on handfree (hf) function. (hfo pin switched to high) special note a 300 ms delay time (tdly) at the first off-hook or turn on handfree that is a special designed to avoid a rapid key entry (dummy number ) in this time duration ,and a long distance call number follows. for example, off-hook , 3 ,.................... , 0 ,1,2,3...... dummy key lock number key the dummy number 3 is not detected by the centered office or pabx ,but the following numbers 0 ,1,2,3... long distance call can be dialed out normally since the leading number 3 is not the lock-number defined in sc91415 series. to prevent the unavoidable long distance call, then sc91415 inhibits the key entry during tdly. f) operating flow chart 1 on-hook state 2 off-hook state 3 off-hook handfree state 4 on-hook handfree state 5 off-hook holdline state 6 on-hook holdline state hf hf hf hd hd hf hd hd hd hf hf hks=hi hks=lo hks=hi hks=lo hks=hi hks=lo note : hf= handfree, hd = hold
silan semiconductors sc91415 series hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 12 truth table input / output pin level operating state hks po xmute hfo hdo (0) on-hook, idle state hffl l (1) off-hook line lffll (2) off-hook, hf line lffhl (3) on-hook, hf line hffhl (4) off-hook, hd line lfllh (5) on-hook, hd line hfl lh note : f = floating (high impedance); h = logic high; l = logic low level. g) music on hold sc91415 series built-in a melody generator to generate dual-tone music on dtmf output pin. the music is designed for telephone line at line holding. h) sdo (serial data output) function the sdo is serial data output which format is same as uart protocol. sdo function is designed to drive lcd driver and voice synthesizer. so the dialing numbers can be display on lcd screen with sc32100 (or sc32116). the sdo signal consists of two start bits, six data bits and two stop bits. each bit time is about 3.9 ms (256 hz) and output sequences are following by start bits, data bits (lsb to msb) and stop bits. start bits ready data bits stop bits 01 bit5 bit4 bit3 bit0 bit1 bit2 1 0
silan semiconductors sc91415 series hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 13 sdo keypad encoded table * digital key (b5,b4=0,0) output keypad b3 b2 b1 b0 display 100011 200102 300113 401004 501015 601106 701117 810008 910019 010100 */t 1 0 1 1 ? #1100 ? p1101p */t 1 1 1 0 * function key (b5,b4=1,0) output keypad b3 b2 b1 b0 display f 1 1 1 1 clear all display * keypad ,sdo format and lcd display reference table: keypad bit5 bit4 bit3 bit2 bit1 bit0 display 1 000001 1 2 000010 2 3 000011 3 4 000100 4 5 000101 5 6 000110 6 7 000111 7 8 001000 8 9 001001 9 0 001010 0 */t001011 ? # 001100 ? p 001101 p */t001110 f 1 0 1 1 1 1 clear all display
silan semiconductors sc91415 series hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 14 i) lock function the sc91415 series provide the lock function to inhibit toll dialing operation. connecting a resistor on col1 pin to vss can select different lock control method that is conventional key lock or password lock. also the lock number that can be selected by connecting the resistors on col2 or col3 pin. after power on reset, the password is fixed to 000 automatically. the lock function is disabled when the password is equal to 000. how to setup password * set lock function to password control mode. (connects a resistor on col1 pin to vss) * off hook (or turn on hf function) * push: #,#, ops1, ops2, ops3, nps1, nps2, nps3, # . if the ops1~ops3 are the same with current password, then nps1~np3 will be stored in the dialer to replace current password. otherwise, the current password can not be updated. all the numbers pressed in the password setup procedure can not be dialed out when current password is not equal to 000. if the current password are equal to 000, then only the first number # will be dialed out. normal dialing set lock function to none lock mode (without resistor connected to col1 pin) or set password equal to 000. in this case, the dialer is operated in normal mode and all functions work at unlimitation. dialing via lock function conventional key lock mode. (connects a resistor on col1 pin to vdd) * off hook (or turn on hf function) * keying: d1, d2, .. , dn . if the first number (d1) is the same with the lock number that optioned in table, then all entry numbers can not be dialed out and keyboard will be inhibited until on to off hook once again. if the first number is not equal to lock number, all the entry numbers will be dialed out. password control mode. (connects a resistor on col1 pin to vss) * off hook (or turn on hf function) * keying: ( [#, ps1, ps2, ps3] + telephone number.) the numbers in the [ ] symbol could be omitted. the number # will be inhibited when the current password is not equal to 000,and ps1, ps2, ps3 work at the checking state, not to be dialed out. other descriptions are as on following: incorrect password entry . the telephone numbers can not be dialed out. password is omitted . if the first digit of telephone numbers is the same with the lock number, all of the telephone numbers can not be dialed out and keyboard will be inhibited until on to off hook once again. if the first digit is not equal to the lock number then the telephone numbers will be dialed out entirely. correct password entry . the telephone numbers can be dial out no matter what lock number is.
silan semiconductors sc91415 series hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 15 j) ring detector the ring detector is designed to prevent illegal dialing from pocket dialer. following the procedures ( i,ii,iii ), this dialer will detect dring pintocontrol rmute output level. if dring is detected a low level, the rmute stays high impedance. if dring is detected a high level, the rmute will output low until keyboard entry. in actual application of the rmute pin is recommended connection to microphone of the phone handset to prevent that the dialing signal (dtmf) is coupling by the microphone of the phone handset. (such as pocket dialer) i. in idle state, hks is from high to low (pick up handset action). ii. in idle state, turn on handfree function. iii. the flash operation ( f key ). timing diagrams tdly hi-impedance 23 tdb tkt tbtm tb tm tidp tidp tm key in kt hdo sdo dtmf osc. po hks xmute pulse mode operating timing hi-impedance key in kt hdo dtmf osc. hks sdo 2 3 tdb xmute titp td titp dtmf mode operating timing po
silan semiconductors sc91415 series hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 16 timing diagrams (continued) tdly hi-impedance key in kt hdo sdo dtmf osc. tdb tkt tb tm tb tm tidp tidp tm lnb=2,3 rd/p hks xmute po pulse mode lnb redial timing tdly hi-impedance key in kt hdo sdo dtmf osc. tdb tkt lnb=2,3 rd/p titp titp td td hks xmute po dtmf mode lnb redial timing
silan semiconductors sc91415 series hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 17 timing diagrams (continued) key in hdo dtmf hi-impedance 2 rd/p 3 tidp tidp kt tp sdo osc. xmute po hks pause key operating timing key in hdo dtmf 2*/t 3 kt tpt sdo osc. xmute hi-impedance po hks pulse to tone (p ? t) operating timing key in hdo dtmf 2 kt sdo osc. hi-impedance po xmute tf tfp=300ms tdb hks flash key operating timing
silan semiconductors sc91415 series hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 18 timing diagrams (continued) key in 2 sdo tdb kt st st b0 b1 b2 b3 b4 b5 spt spt 0101000001 lm tbit hi-impedance hks note: l=lsb, m=msb, st=start bit time, spt=stop bit time sdo operating timing key in sdo hfo hi-impedance hf hd hf hd hd hd hf hd hd@ 280ms thdrdb hdo melody po xmute hks @ :it can be triggled by extension telephone set for hold function release hf and hd operating timing key kt hi-impedance tdly "0" digit dialing time osc. hfi hks hf 50 off-hook delay time
silan semiconductors sc91415 series hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 19 timing diagrams (continued) ring dring hks rmute ton toff timing of receiving an incoming call ring dring hks rmute timing of making an outgoing call
silan semiconductors sc91415 series hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 20 typacal application circuit (for sc91415) offhook 1a bridge tip ring a42 2.2k a92 220k 24 sdo/row5 hdo row4 row3 row2 row1 v dd dtmf hfo row6 col5 col4/kt col3 col2 col1 xin xout v ss hfi sc91415dk 23 22 21 20 19 18 17 16 15 14 13 1 2 3 4 5 6 7 8 9 10 11 12 dring rmute hks xmute po em1 123hd em2 456f em3 789a st */t 0 # rd/p m5 m1 m2 m3 m4 m10 m6 m7 m8 m9 10pf hdo hfo hdo ce row1 col4/kt lcd driver 2to4line speech network audio power amplifer handfree handset 10m onhook sw1a sw1b bridge pc817 jumper 1.2m vdd 47k 100k 4.7k 22 f/50v 47k 100k 220k 0.1 f c945 470k 0.1 f 100k 2.7k 1n4148 0.1 f 220 f 5.1v 1.5k 1815 0.01 f50 1815 47 f 220k 470k jumper 10k 22k 47k 1.0 f 0.1 f c945 560k 1.5v jumper 3.58mhz 10pf buzzer 560k hf dring dring 1n4148 vdd 1.0 f 27v 470 1n4148 c945 47k 1n4148x3 jumper c945 ce 560k 560k 560k 560k 560k 560k 560k 560k jumper 1n4148 1n4148 47k hook
silan semiconductors sc91415 series hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 21 chip topography size: 2.16 x 2.33 mm 2 pad coordinates (unit: m m) no. symbol x y no. symbol x y 1 p1 -1002.4 -256.3 12 p12 1006.5 350.1 2 p2 -1002.4 -450.7 13 p13 1006.5 608.3 3 p3 -1002.4 -649.1 14 p14 1007.2 846.3 4 p4 -1002.4 -878.2 15 p15 849.2 923.4 5 p5 -839.9 -925.4 16 p16 556.0 923.4 6 p6 -563.3 -925.4 17 p17 379.6 923.4 7 p7 321.0 -925.4 18 p18 108.0 923.4 8 p8 721.4 -926.5 19 p19 -1002.4 719.1 9 p9 1006.5 -794.9 20 p20 -1002.4 501.8 10 p10 1006.5 -639.7 21 p21 -1001.4 200.2 11 p11 1006.5 -343.1 22 p22 -1002.4 5.1 note: the original point of the coordinate is the die center.
silan semiconductors sc91415 series hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 22 package outline 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 dip-20-300-2.54 unit: mm 6.40 2.54 3.51 7.62 0.25 15 degree 0.46 22.95 1.50 5.08 3.30
silan semiconductors sc91415 series hangzhou silan microelectronics joint-stock co.,ltd rev: 2.0 2001-11-13 23 package outline dip-22-400-2.54 unit: mm 9.34 3.51 15 degree 0.46 27.88 1.50 5.08 3.30 2.54 10.16 0.25 sdip-24-300-2.54 unit: mm 2.54 7.62 0.25 15 degree 0.46 34.50 1.50 5.08 3.30 6.40 3.51

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