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em91403 series tone/pulse switchable dialer with lcd interface and dual-tone melody generator 1 * this specification are subject to be changed without notice. 10.1.1997 general description the em91403 is a series of tone/pulse switchable dialers that is composed of t/p dialer and t/p dialer with 3 sets memories. the em91403 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. in this application, the dialing numbers can be displayed on lcd screen with em32100 ( or em32116 ). features ? tone/pulse switchable. ? wide operating voltage from 2.0 v to 5.5 v. ? low operating current, 0.15 ma (pulse) and 0.3 ma (tone) typically. ? adding resistor on keyboard scan pin that can select many telephone specifications, such as : pulse rate, m/b ratio, flash time, lock dialing functions. ? 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. ? lock function provides conventionality key lock and password lock operations. ? ring detector is designed to prevent illegal dialing from pocket dialer. ? 3-set one touch repertory memory, each one can hold data up to 16 digits. ? a 32-digit lnb (last number) redial memory. ? keytone function provides rapidly keying recognition. ? 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. ? package forms: pdip, skinny. ordering information versions list and function outline version lnb kt hold(music) lock hf sdo(lcd) pdp em91403a ? ? ? ? em91403b ? ? ? ? ? em91403c ? ? ? ? ? ? em91403d ? ? ? ? ? ? ? note : pdp = pocket dialer prevented em91403 series tone/pulse switchable dialer with lcd interface and dual-tone melody generator
em91403 series tone/pulse switchable dialer with lcd interface and dual-tone melody generator 2 * this specification are subject to be changed without notice. 10.1.1997 em91403 pin assignment col5 col4/kt col3 col2 col1 xin xout xmute vss 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 hdo po row4 row3 row2 row1 hks vdd dtmf em91403ap col5 col4/kt col3 col2 col1 xin xout xmute vss hfi 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 hdo po row4 row3 row2 row1 hks vdd dtmf hfo em91403bp nc col5 col4/kt col3 col2 col1 xin xout xmute vss hfi 1 2 3 4 5 6 7 8 9 10 11 22 21 20 19 18 17 16 15 14 13 12 sdo hdo po row4 row3 row2 row1 hks vdd dtmf hfo em91403ck nc col5 col4/kt col3 col2 col1 xin xout xmute vss hfi dring 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 sdo hdo po row4 row3 row2 row1 hks vdd dtmf hfo rmute em91403dk row1 row2 row3 row4 col1 1 4 7 */t col2 2 5 8 0 col3 3 6 9 # col4/kt hd f rd/p col5 em1 em2 em3 st keyboard arrangement
em91403 series tone/pulse switchable dialer with lcd interface and dual-tone melody generator 3 * this specification are subject to be changed without notice. 10.1.1997 functional block diagram col1 col2 col3 col4/kt col5 xin xout row1 row2 row3 row4 hfo hdo xmute keyboard interface (column) oscillator keyboard interface (row) output circuit memory (melody) timing/control circuit input circuit pulse generator latch & decoder d/a converter row/column programming counter dtmf po hks hfi vdd dring vdd rmute sdo pin descriptions symbol function row1~row4 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 600 hz signal while keyboard is scanning. col1~col3 and col5 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 600 hz signal while keyboard is scanning. col4/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. xin and xout oscillator input and output pins. a 3.579545 mhz crystal or ceramic resonator must be crossed connection to xin and xout pins which generate system clock. 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. v dd and v ss positive and negative power supply input pins. recommended operating voltage from 2.0vdc to 5.5vdc. 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 200 kohms). 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. 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.
em91403 series tone/pulse switchable dialer with lcd interface and dual-tone melody generator 4 * this specification are subject to be changed without notice. 10.1.1997 symbol function 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. 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. 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. 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. dring the ring signal detect input pin which is internal pull up (built-in 100 kohms 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 . 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 can be restored to high level when the first key entry is not the optioned lock-number . nc no connection.
em91403 series tone/pulse switchable dialer with lcd interface and dual-tone melody generator 5 * this specification are subject to be changed without notice. 10.1.1997 function descriptions dialing signal selection the em91403 series incorporated a special keyboard scanning function that is connecting a resistor (typically is 560 kohms) 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-vdd 20 pps nr 40:60 nr tone r-vss 33:66 r-vss 10 pps 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 col2 col3 lock number nr nr none nr r-vss 0 r-vss nr 9 r-vss r-vss 0,9 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. 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.
em91403 series tone/pulse switchable dialer with lcd interface and dual-tone melody generator 6 * this specification are subject to be changed without notice. 10.1.1997 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. repertory memory the em91403 series incorporated several sets repertory memory and each one can store number up to 16 digits. these memories were designed to 3 sets types. 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 3 sets memory direct (one-touch) operation off-hook (or turn on hf function), push (st, d1, d2, .. , dn [st], emn the numbers d1, d2, .. , dn will be stored into memory location emn. the emn expressed emergency memory em1 to em3. 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 emn key. the numbers that are stored in direct memory location emn will be dialed out in pulse or tone mode as selection. the n expressed digital number from 1~3. 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)
em91403 series tone/pulse switchable dialer with lcd interface and dual-tone melody generator 7 * this specification are subject to be changed without notice. 10.1.1997 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. 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) 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 em91403 series. to prevent the unavoidable long distance call, then em91403 inhibits the key entry during tdly.
em91403 series tone/pulse switchable dialer with lcd interface and dual-tone melody generator 8 * this specification are subject to be changed without notice. 10.1.1997 operating flow chart : hf = handfree hd = hold truth table operating state input/output pin level hks po xmute hfo hdo (0) on-hook, idle state h f f l l (1) off-hook line l f f l l (2) off-hook, hf line l f f h l (3) on-hook, hf line h f f h l (4) off-hook, hd line l f l l h (5) on-hook, hd line h f l l h note : f=floating (high impedance); h=logic high; l=logic low level. music on hold em91403 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. 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 em32100 (or em32116 ). 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. 1 on-hook state 2 off-hook state 4 on-hook hand-free state hks=lo hks=lo hks=hi hf hf hd hf hd 6 on-hook hold-line state 3 off-hook hand-free state hf hf hf hd hks=hi hks=lo 5 off-hook hold-line state hd hd hks=hi
em91403 series tone/pulse switchable dialer with lcd interface and dual-tone melody generator 9 * this specification are subject to be changed without notice. 10.1.1997 0 1 bit 0 bit1 bit2 bit3 bit4 bit5 ready start bits data bits 0 1 stop bits sdo keypad encoded table: digital key (b5,b4=0,0) keypad 1 2 3 4 56789 0 */t # p */t output b3,b2,b1,b0 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 display 1 2 3 4 56789 0 ?? p function key (b5,b4=1,0) keypad f output b3,b2,b1,b0 1111 display clear all display * keypad,sdo format and lcd display reference table: keypad bit5 bit4 bit3 bit2 bit1 bit0 display 1000001 1 2000010 2 3000011 3 4000100 4 5000101 5 6000110 6 7000111 7 8001000 8 9001001 9 0001010 0 */t 0 0 1 0 1 1 ? #001100 ? p001101 p */t 0 0 1 1 1 0 f 1 0 1 1 1 1 clear all display
em91403 series tone/pulse switchable dialer with lcd interface and dual-tone melody generator 10 * this specification are subject to be changed without notice. 10.1.1997 lock function the em91403 serial provides 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. 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 pin to control 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
em91403 series tone/pulse switchable dialer with lcd interface and dual-tone melody generator 11 * this specification are subject to be changed without notice. 10.1.1997 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 ). absolute maximum ratings (ambient temperature is 25 c, all voltages referenced to v ss ) items sym. rating unit power supply voltage v dd 6.0 vdc v input voltage range v in v ss -0.3v ~ v dd +0.3v v operating temperature t opr 0 ~ +50 c storage temperature t sto -55 ~ 125 c power consumption p d 500 mw electrical characteristics (ambient temperature is 25 c, v dd =2.5v unless otherwise noted, all voltages referenced to v ss , fosc=3.579545 mhz) parameter sym. min. typ. max. unit condition operating voltage pulse 2.0 - 5.5 v unload tone 2.0 - 5.5 operating current(hks=0) pulse idd - 0.15 0.3 unload tone - 0.3 0.5 ma pulse - 0.15 0.3 with pull up/down tone - 0.3 0.5 resistor * 8 memory retention current imrt - 0.001 0.1 ua hks=1,vdd=1v standby current hks=1 istby - 0.001 0.1 unload hks=0 - 1 10 ua hks=1 -0.001 0.1 with pull up/down hks=0 - 10 30 resistor * 8 hks, hfi & dring vih 0.8vdd - vdd v pins: input voltage vil vss - 0.2vdd hfo & hdo pins source current ioh 0.2 - - ma vo = 2.0 v po, hfo, xmute, rmute iol -0.2 - - ma vo = 0.5 v & sdo pins: sink current po, xmute, rmute and sdo ioh - - 0.001 ua vo = vdd pins: leakage current hfi pin input resistance rhfi - 200 - k w vhfi = vss dring pin input resistance rdring - 100 - k w vdeing=vss keyboard scanning pins ioh 2 10 50 ua vksn=vss output current (except col4/kt) iol 200 400 800 v ksn=vdd col4/kt source current ioh 0.2 - - ma vo=2.0v sink current iol 0.2 - - vo=0.5v
em91403 series tone/pulse switchable dialer with lcd interface and dual-tone melody generator 12 * this specification are subject to be changed without notice. 10.1.1997 parameter sym. min. typ. max. unit condition electrical characteristic (ambient temperature is 25 c, v dd =2.5v unless otherwise noted, all voltages referenced to vss,fosc=3.579545 mhz) keyboard debounce time tdb - 20 - ms key tone signal: frequency fkt - 600 - hz duration tkt - 30 - ms pause time tp - 3.6 - sec. pulse to tone waiting time tpt - 3.6 - sec. flash time tf - 600 - row3b, row4b=nr, nr - 100 - ms row3b, row4b=nr, r-vss - 80 - row3b,row4b=r-vss, nr - 300 - row3b,row4b=r-vss,r-vss pulse rate psr - 20 - pps row1 = r-vdd - 10 - row1 = r-vss make/break ratio mbr - 40:60 - % row2 = nr - 33:66 - row2 = r-vss inter-digit pause time tidp - 800 - ms psr = 10 pps - 500 - psr = 20 pps dtmf pin: sink current iol -0.2 - - ma vdtmf = 0.5 v dtmf signal dc level vdc 0.5 - 0.75 vdd vdd = 2.0v ~ 5.5v dtmf signal: ac level vdtmf 142 160 180 mvrms row group pre-emphase twist 1 2 3 db column - row distortion thd - -30 -23 db rl = 5 k w load resistance zl 5 - - k w thd < - 23db minimum tone duration tp 96 98 100 minimum inter-tone pause titp 96 98 100 ms memory dialing melody output signal: main tone ac level (-23.3) (dbm) vmtac 48 53 58 mvms vdd =2.0v ~ 5.5v sub-tone (-25.3) (dbm) vstac 37 42 47 mvms vdd =2.0v ~ 5.5v hd key release hold function thdrdb - 280 - ms debounce time sdo every bit time tbit 3.8 3.9 4.1 ms off-hook delay time tdly - 300 - ms
em91403 series tone/pulse switchable dialer with lcd interface and dual-tone melody generator 13 * this specification are subject to be changed without notice. 10.1.1997 dtmf output frequency (fosc = 3.579545 mhz) keyboard scan pin ccitt standard (hz) actual output (hz) 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
em91403 series tone/pulse switchable dialer with lcd interface and dual-tone melody generator 14 * this specification are subject to be changed without notice. 10.1.1997 timing diagram figure 1. pulse mode operating timing figure 2. dtmf mode operating timing hks key in kt xmute hdo sdo po dtmf osc. tdb tkt 2 3 tm tidp t b t m t b t m tidp tdly hi-impedance hks key in kt xmute hdo sdo po dtmf osc. tdb 2 3 td titp titp hi-impedance
em91403 series tone/pulse switchable dialer with lcd interface and dual-tone melody generator 15 * this specification are subject to be changed without notice. 10.1.1997 figure 3. pulse mode lnb redial timing hks key in kt xmute hdo sdo po dtmf osc. tdb tkt rd/p tm tidp t b t m t b t m tidp tdly lnb=2,3 hi-impedance figure 4. dtmf mode lnb redial timing hks key in kt xmute hdo sdo po dtmf osc. tdb tkt rd/p td tdly hi-impedance lnb=2,3 td titp titp
em91403 series tone/pulse switchable dialer with lcd interface and dual-tone melody generator 16 * this specification are subject to be changed without notice. 10.1.1997 figure 6. pulse to tone (p ? t) operating timing figure 5. pause key operating timing tidp tidp tp 2 rd/p 3 hks key in kt xmute hdo sdo po dtmf osc. hi-impedance tpt po hks key in kt xmute hdo sdo dtmf osc. 2 */t 34 hi-impedance hks key in kt xmute hdo sdo po dtmf osc. tdb tf tfp=300ms hi-impedance f figure 7. flash key operating timing
em91403 series tone/pulse switchable dialer with lcd interface and dual-tone melody generator 17 * this specification are subject to be changed without notice. 10.1.1997 figure 8. sdo operating timing l=lsb,m=msb, st=start bit time, spt=stop bit time hf hd hf hd hf hd hd hd hd @ 280 ms thdrdb hks key in hfo hdo xmute sdo po melody hi-impedance figure 10. off-hook delay time tdly "0" digit dialing time 0 5 hf hfi or hks key kt osc. hi-impedance @ : it can be triggled by extension telephone set for hold function release figure 9. hf and hd operating timing hks key in kt sdo tdb 2 st st b0 b1 b2 b3 b4 b5 spt spt 0 1 0 1 0000 0 1 tbit l m hi-impedance
em91403 series tone/pulse switchable dialer with lcd interface and dual-tone melody generator 18 * this specification are subject to be changed without notice. 10.1.1997 ring dring hks rmute toff ton figure 11. timing of receiving an incoming call figure 12. timing of making an outgoing call ring dring hks rmute * the external ring detection circuit must send a low signal at the total ring cycle (ton and toff)
em91403 series tone/pulse switchable dialer with lcd interface and dual-tone melody generator 19 * this specification are subject to be changed without notice. 10.1.1997 application circuit em91403 series application circuit handset handfree 5 4 6 sw1b bridge tip 470 onhook offhook 2 1 3 sw1a 1 2 3 q6 a92 r47 220k r54 10m r48 100k 1 2 d6 1n4148 1 2 d7 1n4148 r49 2k7 r52 220k c16 .001u r36 470k r33 1k5 1 2 3 q18 1815 hook hfo r55 470k em32100 jp9 1 2 3 q14 c945 1 2 d16 1n4148 1 2 d17 1n4148 r56 47k ce row1 1 2 d18 1n4148 hdo em32100 jp10 r65 220k c17 .01u 1 2 3 q19 1815 r67 50 c23 47u c24 .1u c31 220uf d13 5v1 1 2 3 q4 c945 r37 100k c25 .1u r35 2k2 2 1 3 q7 a42 1 2 d14 1n4148 r69 47k ring bridge .1u 22u/50v r68 100k vdd 27v 1 2 d5 1n4148 r43 47k 1 2 d19 1n4148 r57 47k r44 22k r45 47k c21 .1uf c22 1uf 1 2 3 q9 c945 r46 10k hdo 1 2 3 q10 c945 audio power amplifer col4/kt ce jumper 560k 560k 560k 560k dring 4k7 1.2m 1u 1 2 4 3 pc817 1 4 7 */t 2 5 8 0 3 6 9 # hd f rd/p em1 em2 em3 st jumper jumper vdd 560k em91403dk sdo lcd driver vcc 1.5v 2 to 4 line speech network dring 3.58mhz 560k 560k 560k buzzer 10p 10p hf 24 23 22 21 20 19 18 17 16 15 14 13 1 2 3 4 5 6 7 8 9 10 11 12 sdo hdo po row4 row3 row2 row1 hks vdd dtmf hfo rmute nc col5 col4/kt col3 col2 col1 xin xout xmute vss hfi dring
em91403 series tone/pulse switchable dialer with lcd interface and dual-tone melody generator 20 * this specification are subject to be changed without notice. 10.1.1997 em32100 application circuit : package type : qfp 48 pins or chip form provided 1 2 3 4 5 6 7 8 9 10 11 12 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 37 38 39 40 41 42 43 44 45 46 47 48 seg5 seg4 seg3 seg2 seg1 com1 com2 com3 test2 test1 f32h nc seg17 seg18 seg19 seg20 seg21 seg22 seg23 seg24 v ee vn vp nc seg6 seg7 seg8 seg9 nc seg10 seg11 seg12 seg13 seg14 seg15 seg16 ms1 ms2 sd1 hks v dd xin nc xout v ss 24/12 enrtc nc .1 .1 em32100 v cc 8/10 digits lcd pannel 1.5v 32768hz 1 100k 200k 100k 20p 20p 3 1 3 1 1 1 2 2 2 3 1 2 2 2 c945 220k 220k 47k diode diode diode c945 v dd hks hdo hfo v ss sdo
em91403 series tone/pulse switchable dialer with lcd interface and dual-tone melody generator 21 * this specification are subject to be changed without notice. 10.1.1997 em32116 application circuit : package type : qfp 64 pins or chip form provided 24/12 enrtc enclnd com3 com2 com1 seg31 seg30 seg29 seg28 seg27 seg26 test2 batckof batlow seg0 seg1 seg2 seg3 seg4 seg5 srg6 seg7 seg8 seg9 com3 com2 com1 seg31 seg30 seg29 seg28 seg27 seg26 seg25 seg24 seg23 seg22 seg21 seg20 seg19 seg18 seg17 seg16 seg15 seg14 seg13 seg12 seg11 seg10 seg9 seg8 seg7 seg6 seg5 seg4 seg3 seg2 seg1 seg0 seg25 seg24 seg23 seg22 seg21 seg20 seg19 seg18 seg17 seg16 seg15 seg14 seg13 seg12 seg11 seg10 xout xin vss vc2 vc1 v3 v2 v dd hks sdi ms2 ms1 f32hz test1 em32116 v dd 1.5v v dd 1 2 3 on off calendar 1 2 3 on off rtc 1 2 3 on off hour 20p 20p 32768kz .1? .1? .1? .1? 1 3 2 sw hook 100k 3 .1 1 2 c945 470k v dd line hook switch detection circuit sdi lcd110
em91403 series tone/pulse switchable dialer with lcd interface and dual-tone melody generator 22 * this specification are subject to be changed without notice. 10.1.1997 example : em 91403 p (1) (2) (3) (1) elan micro. pefix (2) type number (3) package code: p ? pdip k ? skinny r ? sdip package information 18/20/28 lead plastic package 18 pdip milimeters inches dim min. max. min. max. a - 5.334 - .210 a1 0.381 - .015 - b 0.356 0.558 .014 .022 b1 1.150 1.778 .045 .070 c 0.204 0.381 .008 .015 d 22.35 23.37 .880 .920 e 7.620 8.255 .300 .325 e1 6.096 7.112 .240 .280 e 2.286 2.794 .090 .110 eb - 10.92 - .430 l 2.921 4.064 .115 .160 20 pdip milimeters inches dim min. max. min. max. a - 5.334 - .210 a1 0.381 - .015 - b 0.356 0.558 .014 .022 b1 1.150 1.778 .045 .070 c 0.204 0.381 .008 .015 d 25.40 26.67 1.000 1.050 e 7.620 8.255 .300 .325 e1 6.096 7.112 .240 .280 e 2.286 2.794 .090 .110 eb - 10.92 - .430 l 2.921 4.064 .115 .160 28 pdip milimeters inches dim min. max. min. max. a - 6.350 - .250 a1 0.381 - .015 - b 0.356 0.558 .014 .022 b1 1.016 1.778 .040 .070 c 0.204 0.381 .008 .015 d 35.56 37.85 1.400 1.490 e 15.24 15.88 .600 .625 e1 13.21 14.73 .520 .580 e 2.286 2.794 .090 .110 eb - 17.78 - .700 l 2.921 5.080 .115 .200 b c eb d e1 b1 a1 e l a e 1
em91403 series tone/pulse switchable dialer with lcd interface and dual-tone melody generator 23 * this specification are subject to be changed without notice. 10.1.1997 22/24 lead plastic package-skinny 22 pdip (skinny) milimeters inches dim min. max. min. max. a - 4.752 - .180 a1 0.381 - .015 - b 0.356 0.558 .014 .022 b1 1.27 1.778 .050 .070 c 0.204 3.556 .008 .014 d 25.90 26.67 1.02 1.05 e 7.620 8.255 .300 .325 e1 6.223 6.604 .245 .260 e 2.286 2.794 .090 .110 eb 8.382 10.16 .330 .400 l 2.921 4.064 .115 .160 24 pdip (skinny) milimeters inches dim min. max. min. max. a - 4.572 - .180 a1 0.381 - .015 - b 0.356 0.558 .014 .022 b1 1.27 1.778 .050 .070 c 0.204 0.381 .008 .015 d 31.24 32.26 1.23 1.270 e 7.620 8.255 .300 .325 e1 6.223 6.731 .245 .265 e 2.286 2.794 .090 .110 eb 8.636 9.652 .340 .380 l 2.921 4.064 .115 .160 b c eb d e1 b1 a1 e l a e 1
em91403 series tone/pulse switchable dialer with lcd interface and dual-tone melody generator 24 * this specification are subject to be changed without notice. 10.1.1997 42 sdip package b d1 c eb d b1 a1 e l a a2 e e1 42 sdip milimeters inches dim min. max. min. max. a - 5.08 - 0.200 a1 0.381 - 0.015 - a2 3.937 4.191 0.155 0.165 b 0.356 0.559 0.014 0.022 b1 0.914 1.116 0.036 0.044 c 0.204 0.304 0.008 0.012 d 36.70 37.34 1.445 1.470 e1 13.84 14.10 0.545 0.555 e 1.727 1.829 0.068 0.072 eb 15.24 17.78 0.600 0.70 d1 0 0.127 0 0.005 l 2.921 3.429 0.115 0.135

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