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em91465 series tone/pulse switchable dialer with lcd interface and i.p.p. detect function 1 * this specification are subject to be changed without notice. 9.24.1998 general description the em91465 is a series of tone/pulse switchable dialers that is composed of t/p dialer and t/p dialer with 13 set memories. the em91465 provide modern lcd driver's series data output port, which can display modern function operating icons. the em91465 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, ring detector and sdo (serial data output) functions are provided in advance version. 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 and modern function operating icons can be displayed on lcd screen with lcd driver ( em32100 or em32117 ). the em91465 has a special i.p.p. detect function (illegal parallel phone detect) can prevent the illegal connect external phone. the i.p.p. will detect the illegal user. when illegal user pickup phone, the function will alarm and send the alarm signal to the telephone line to interfer the illegal dialing. features ? i.p.p. detect function prevents the illegal connect external phone. ? sdo function supports lcd driver and voice synthesizer to indicate dialing numbers and function operat ing icons. ? lock function provides conventionality key lock and password lock operations. ? ring detector is designed to prevent illegal dialing from pocket dialer. ? line hold function is designed for stopping conversation temporality. ? 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. ? 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. ? 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 i.p.p. lock hf sdo(lcd) pdp em91465a ??? ? ? em91465b ??? ? ? ? em91465c ??? ? ? ?? em91465d ??? ? ? ?? ? note : pdp = pocket dialer prevented : i.p.p. detect = illegal parallel phone detect.
em91465 series tone/pulse switchable dialer with lcd interface and i.p.p. detect function 2 * this specification are subject to be changed without notice. 9.24.1998 em91465 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 em91465ap 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 em91465bp row6 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 row5/sdo hdo po row4 row3 row2 row1 hks vdd dtmf hfo em91465ck row6 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 row5/sdo hdo po row4 row3 row2 row1 hks vdd dtmf hfo rmute em91465dk row1 row2 row3 row4 row5/sdo row6 col1 1 4 7 */t m1 m6 col2 2 5 8 0 m2 m7 col3 3 6 9 # m3 m8 col4/kt hd f a rd/p m4 m9 col5 em1 em2 em3 st m5 m10 keyboard arrangement @ when row5 is selected by r option (col5), there are 13 sets one touch memory version in em91465c/d provided. row5/sdo : option by col5
em91465 series tone/pulse switchable dialer with lcd interface and i.p.p. detect function 3 * this specification are subject to be changed without notice. 9.24.1998 functional block diagram pin descriptions symbol function row1~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 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 input/output structure pin. the output is a open drain structure. input is schmitt trigger structure. this pin will be input pin during on-hook status for illegal parallel phone detect input pin and will be output pin in off-hook condition for control speech network . 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) signal 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. col1 col2 col3 col4/kt col5 xin xout row1 row6 hfo hdo xmute keyboard interface (column) oscillator keyboard interface (row) output circuit memory timing/control circuit input circuit pulse generator latch & decoder d/a converter row/column programming counter dtmf po hks hfi vdd dring rmute sdo ~ i/o circuit
em91465 series tone/pulse switchable dialer with lcd interface and i.p.p. detect function 4 * this specification are subject to be changed without notice. 9.24.1998 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. 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 .
em91465 series tone/pulse switchable dialer with lcd interface and i.p.p. detect function 5 * this specification are subject to be changed without notice. 9.24.1998 function descriptions dialing signal selection the em91465 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 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 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. (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)
em91465 series tone/pulse switchable dialer with lcd interface and i.p.p. detect function 6 * this specification are subject to be changed without notice. 9.24.1998 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 em91465 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. 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) 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. dialing 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.
em91465 series tone/pulse switchable dialer with lcd interface and i.p.p. detect function 7 * this specification are subject to be changed without notice. 9.24.1998 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. 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 93 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 em91465 series. to prevent the unavoidable long distance call, then em91465 inhibits the key entry during tdly.
em91465 series tone/pulse switchable dialer with lcd interface and i.p.p. detect function 8 * this specification are subject to be changed without notice. 9.24.1998 operating flow chart : hf = handfree hd = hold truth table pin level operating state input i/o output hks xmute po hfo hdo dtmf (1) on-hook, idle state h h/f f l l - (2) off-hook line l h/f f l l - (3) off-hook, hf line l h/f f h l - (4) on-hook, hf line h h/f f h l - (5) off-hook, hd line l l/l f l h - (6) on-hook, hd line h l/l f l h - (7) ipp state h l/l f h h active note : f=floating (high impedance); h=logic high; l=logic low level. xmute are i/o port, so input will effect state situation change, and which state dialer stay will effect output level. 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 em32117 ). the sdo signal consists of two start bits, six data bits and two stop bits. the 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. 0 1 bit 0 bit1 bit2 bit3 bit4 bit5 ready start bits data bits 0 1 stop bits (1) on-hook state (7) ipp state (2) off-hook state (4) on-hook hand-free state hks=lo hks=lo hks=lo hks=hi hf hf =hi 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 xmute xmute=lo
em91465 series tone/pulse switchable dialer with lcd interface and i.p.p. detect function 9 * this specification are subject to be changed without notice. 9.24.1998 : the display of lcd panel st,hold,hf,a,em1~em3,rd is corresponding to em32117 with flag types. * 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 st 1 0 0 0 0 0 store hold 1 0 1 0 0 0 hold hf 1 0 1 0 1 0 speaker a101110 a f 1 0 1 1 1 1 clear all display (lock state) 1 0 0 0 0 1 lock em1~em3 1 1 1 1 0 0 memory rd 1 1 1 1 0 1 rd lock function the em91465 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~nps3 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.
em91465 series tone/pulse switchable dialer with lcd interface and i.p.p. detect function 10 * this specification are subject to be changed without notice. 9.24.1998 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 or keying flash. correct password entry . the telephone numbers can be dial out no matter what lock number is. if the first digit is not equal to the lock number then the telephone numbers will be dialed out entirely and use the flash key to redial any other number will not check the pass word again. 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 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 ). i.p.p. detect function the em91465 series provide the i.p.p. function to pretect illegal connect. i.p.p means illegal parallel phone detect. i.p.p. function depend on xmute pin and hks, hf status. when in the on-hook condition and hf turn off, the xmute pin will be a input pin to detect the voltage lever, otherwises, the xmute pin will be a normally output pin use for control speech network. when i.p.p. function detect. xmute pin at "low" status (in on-hook and hf turn off state), em91465 will turn on hf and hdo then send alarm signal to telephone line. in alarm duration dtmf pin will continue sending "#","8" "8" signal. the dtmf signal will interfere the illegal user until the illegal user hang up the phone and the pin detect "high" again. the telephone circuit design can allow the illegal internal connect user. (see i.p.p application circuit).
em91465 series tone/pulse switchable dialer with lcd interface and i.p.p. detect function 11 * this specification are subject to be changed without notice. 9.24.1998 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 dc 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 ma with pull up/down tone - 0.3 0.5 resistor * 8 memory retention current imrt - - 0.1 ua hks=1,vdd=1v standby current hks=1 istby - - 0.1 unload hks=0 - 1 10 ua hks=1 - 0.1 with pull up/down hks=0 - 10 30 resistor * 8 hks, hfi & dring vih 0.8v dd -v dd v pins: input voltage vil v ss - 0.2v dd xmute pin : schmitt triggers v h-l v ss - 0.3v dd v at idle state (input pin) v l-h 0.7v dd -v dd v 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 - - 0.01 ua vo = vdd pins: leakage current hfi pin input resistance rhfi - 200 - k w vhfi = vss keyboard scanning pins ioh 2 10 50 ua vksn=vss output current (except col4/kt) iol 200 400 800 m a ksn=vdd col4/kt source current ioh 0.2 - - ma vo=2.0v sink current iol 0.2 - - vo=0.5v 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 zl = 5 k w load resistance zl 5 - - k w thd < - 23db distortion(db)=20 log {[v 1 2 +v 2 2 +v 3 2 ..... +v n 2 )1/2]/[(v l 2 +v h 2 )1/2]} v l , v h =row group and column group signal. v 1 , v 2 , v 3 .... v n = harmonic signal (bw=300hz~3500hz)
em91465 series tone/pulse switchable dialer with lcd interface and i.p.p. detect function 12 * this specification are subject to be changed without notice. 9.24.1998 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 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 minimum tone duration tp 96 98 100 minimum inter-tone pause titp 96 98 100 ms memory dialing hd key release hold function thdrdb - 93 - ms debounce time sdo bit time tbit 3.8 3.9 4.1 ms off-hook delay time tdly - 300 - ms parameter sym. min. typ. max. unit condition ac electrical characteristic (ambient temperature is 25 c, v dd =2.5v unless otherwise noted, all voltages referenced to vss,fosc=3.579545 mhz)
em91465 series tone/pulse switchable dialer with lcd interface and i.p.p. detect function 13 * this specification are subject to be changed without notice. 9.24.1998 timing diagram figure 1. pulse mode operating timing figure 2. dtmf mode operating timing hks key in kt xmute 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 sdo po dtmf osc. tdb 2 3 td titp titp hi-impedance
em91465 series tone/pulse switchable dialer with lcd interface and i.p.p. detect function 14 * this specification are subject to be changed without notice. 9.24.1998 figure 3. pulse mode lnb redial timing figure 4. dtmf mode lnb redial timing hks key in kt xmute 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 hks key in kt xmute sdo po dtmf osc. tdb tkt rd/p td tdly hi-impedance lnb=2,3 td titp titp
em91465 series tone/pulse switchable dialer with lcd interface and i.p.p. detect function 15 * this specification are subject to be changed without notice. 9.24.1998 figure 6. pulse to tone (p ? t) operating timing figure 5. pause key operating timing figure 7. flash key operating timing tidp tidp tp 2 rd/p 3 hks key in kt xmute sdo po dtmf osc. hi-impedance tpt po hks key in kt xmute sdo dtmf osc. 2 */t 34 hi-impedance hks key in kt xmute sdo po dtmf osc. tdb tf tfp=300ms hi-impedance f
em91465 series tone/pulse switchable dialer with lcd interface and i.p.p. detect function 16 * this specification are subject to be changed without notice. 9.24.1998 figure 8. sdo operating timing l=least significant bit,m=most significant bit, sb=start bit , spt=stop bit figure 10. off-hook delay time @ : 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 sb sb b0 b1 b2 b3 b4 b5 spb spb 0 1 0 1 0000 0 1 tbit l m hi-impedance 0 tdly "0" digit dialing time 0 5 hf hfi or hks key kt osc. sdo hi-impedance hf hd hf hd hf hd hd hd hd @ 93 ms thdrdb hks key in hfo hdo xmute sdo po melody hi-impedance
em91465 series tone/pulse switchable dialer with lcd interface and i.p.p. detect function 17 * this specification are subject to be changed without notice. 9.24.1998 figure 11. timing of receiving an incoming call figure 12. timing of making an outgoing call * the external ring detection circuit must send a low signal at the total ring cycle (ton and toff) ring dring hks rmute toff ton ring dring hks rmute
em91465 series tone/pulse switchable dialer with lcd interface and i.p.p. detect function 18 * this specification are subject to be changed without notice. 9.24.1998 application circuit : control and ipp detect network and hold driver keyborad lcd speech vdd vdd vdd vdd vdd 470u 16v bridge bridge 1n4148 1n4148 1n4148 1n4148 1n4148 pc817 47k 100 100k 1m 4.7m 22m 2k2 1n4148 sw2 100k 47k 3k3 a92 1n4148 3.58m 0.1u 0.1u 220k 0.1u 10m 47k 4v7 em91465dk row6 1 col5 2 kt/col4 3 col3 4 col2 5 col1 6 xin 7 xout 8 xmute 9 vss 10 hfi 11 dring 12 rmute 13 hfo 14 dtmf 15 vdd 16 hks 17 row1 18 row2 19 row3 20 row4 21 po 22 hdo 23 row5/sdo 24 100k 100k 0.1u 470k c945 a42 bridge 470 0.1u pc817 1.2m 1u 27v 0.22u/50v 4k7 1k5 50 1815 1815 0.001u 0.01u hf buzzer hfo hdo po hfo hdo po dring dring rmute xmute scan line sdo hk line line
em91465 series tone/pulse switchable dialer with lcd interface and i.p.p. detect function 19 * this specification are subject to be changed without notice. 9.24.1998 r-option automatically hold release circuit vdd vdd flash time mbr mode sdo lock number lock c945 c945 47u 0.1u 220k 47k 22k 1u 47k scan col5 col4 col3 col2 col1 row1 row2 row3 row4 row5 row6 row1 col4/kt line hdo application circuit : key board and hold
em91465 series tone/pulse switchable dialer with lcd interface and i.p.p. detect function 20 * this specification are subject to be changed without notice. 9.24.1998 application circuit : lcd driver use em32117 part vdd extra recommand cricuit : em32117 can used this cricuit replace extra battery . ( but if lcd panel's power consumption are too large , the extra battery still be needed. ) noted : ms1 ,ms2 adjust time gf jump : general flag icon for logo on/off calendar jump : calendar on/off rtc jump : real time clock on/off hour jump : 24/12 format select vdd vdd vdd vdd lcd panel com0 33 com1 34 com2 35 seg2 3 seg3 4 seg4 5 seg5 6 seg6 7 seg7 8 seg8 9 seg9 10 seg10 11 seg11 12 seg12 13 seg13 14 seg14 15 seg15 16 seg16 17 seg17 18 seg18 19 seg19 20 seg20 21 seg21 22 seg22 23 seg23 24 seg24 25 seg25 26 seg26 27 seg27 28 seg28 29 seg29 30 seg30 31 seg31 32 com3 36 seg0 1 seg1 2 1n4148 c945 470k ms2 0.1u 0.1u 0.1u 32768 ms1 em32117 seg12 78 seg13 77 seg14 76 seg15 75 seg16 74 seg17 73 seg18 72 seg19 71 seg20 70 seg21 69 seg22 68 seg23 67 seg24 66 seg25 65 seg26 58 seg27 57 seg28 56 seg29 55 seg30 54 seg31 53 com0 52 com1 51 com2 50 com3 49 vc1 36 ms1 27 vc2 37 vss 38 xin 39 hks 32 seg0 17 seg1 16 seg2 15 seg3 14 seg4 13 seg5 12 seg6 11 seg7 10 seg8 9 seg9 8 seg10 80 seg11 79 v3 35 v2 34 ms2 28 spare2 30 sdi 31 vdd 33 xout 40 fg 18 enclnd 48 enrtc 47 24/12 46 test 19 spare1 29 calendar rtc hour gf c945 c945 c945 1m 1.5v battery sdo hk vdd hks sdi hks sdi test vdd dialer
em91465 series tone/pulse switchable dialer with lcd interface and i.p.p. detect function 21 * this specification are subject to be changed without notice. 9.24.1998 application circuit : lcd driver use em32100 noted : ms1 ,ms2 adjust time rtc jump : real time clock on/off hour jump : 24/12 format select extra ** em32100 need hdo and hfo ** vdd vdd vdd 1n4148 c945 47k ms2 20p 20p 0.1u 32768 ms1 rtc hour 0.1u 220k 1n4148 1n4148 em32100 seg9 33 seg8 34 seg7 35 seg6 36 seg5 37 seg4 38 seg3 39 seg2 40 seg1 41 test1 46 f32h 47 ms1 1 ms2 2 sdi 3 hks 4 vdd 5 vp 14 vss 9 xin 6 seg20 21 seg21 20 seg22 19 seg23 18 seg24 17 vee 16 vn 15 enrtc 11 24/12 10 xout 8 seg19 22 seg18 23 seg17 24 seg16 25 seg15 26 seg14 27 seg13 28 seg12 29 seg11 30 seg10 31 nc 32 nc 7 nc 12 nc 13 com1 42 com2 43 com3 44 test2 45 nc 48 1.5v battery 330k lcd panel com3 com2 com1 seg1 seg2 seg3 seg4 seg5 seg6 seg7 seg8 seg9 seg10 seg11 seg12 seg14 seg15 seg16 seg17 seg18 seg19 seg20 seg21 seg22 seg23 seg24 seg13 sdo hdo hks sdi hks sdi test and f32h hk hfo vdd vdd
em91465 series tone/pulse switchable dialer with lcd interface and i.p.p. detect function 22 * this specification are subject to be changed without notice. 9.24.1998 example : em 914xx 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
em91465 series tone/pulse switchable dialer with lcd interface and i.p.p. detect function 23 * this specification are subject to be changed without notice. 9.24.1998 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
em91465 series tone/pulse switchable dialer with lcd interface and i.p.p. detect function 24 * this specification are subject to be changed without notice. 9.24.1998 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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