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TONE/PULSE DIALER WITH LCD INTERFACE TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION AND I.P.P. DETECT FUNCTION
EM91450 SERIES EM91450 SERIES
GENERAL DESCRIPTION
The EM91450 is a series of tone/pulse switchable dialers that is composed of T/P dialer. The EM91465 provide modern LCD driver's series data output port, which can display modern function operating icons. The EM91450 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 EM91450 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 operating 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. EM91450A EM91450B EM91450C EM91450D Note : PDP = Pocket Dialer Prevented : I.P.P. detect=Illegal Parallel Phone Detect. * This specification are subject to be changed without notice.
LOCK
HF
SDO(LCD)
PDP
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EM91450 SERIES
TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION
EM91450
Pin Assignment
EM91450AP
COL4/KT COL3 COL2 COL1 XIN XOUT XMUTE VSS 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 PO ROW4 ROW3 ROW2 ROW1 HKS VDD DTMF
EM91450BP
COL4/KT COL3 COL2 COL1 XIN XOUT XMUTE VSS HFI 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 PO ROW4 ROW3 ROW2 ROW1 HKS VDD DTMF HFO
EM91450CP
SDO 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
EM91450DK
SDO COL4/KT COL3 COL2 COL1 XIN XOUT XMUTE VSS HFI DRING 1 2 3 4 5 6 7 8 9 10 11 22 21 20 19 18 17 16 15 14 13 12 HDO PO ROW4 ROW3 ROW2 ROW1 HKS VDD DTMF HFO RMUTE
Keyboard Arrangement
ROW1 ROW2 ROW3 ROW4
COL1 1 4 7 */T
COL2 2 5 8 0
COL3 3 6 9 #
COL4/KT HD F RD/P
* This specification are subject to be changed without notice.
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TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION
FUNCTIONAL BLOCK DIAGRAM
SDO COL1 COL2 COL3 COL4/KT Keyboard interface (column) Output circuit Row/Column programming counter HFO HDO RMUTE
XMUTE
I/O circuit
Memory
latch & decoder
D/A converter
DTMF
XIN XOUT
Oscillator Timing/Control circuit
ROW1
Keyboard interface (Row) VDD HFI HKS DRING Input circuit Pulse generator PO
ROW4
PIN DESCRIPTIONS
Symbol ROW1~ROW4 Function Keyboard scan pins of row group. In idle state (HKS is "High" and HFO is "Low"), these pins stay OHigh impedanceO level to prevent power consumption. Otherwise, these pins switch to OHighO level for detecting keyboard entry. These pins will output 600 Hz signal while keyboard is scanning. Keyboard scan pins of column group. In idle state, these pins stay "High impedance" level. Otherwise these pins switch to OLowO level for detecting keyboard entry. These pins will output 600 Hz signal while keyboard is scanning. 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. 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. 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. Positive and negative power supply input pins. Recommended operating voltage from 2.0Vdc to 5.5Vdc. 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). 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 to"High". Otherwise, this pin stays "Low" level. 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.
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COL1~COL3
COL4/KT
XIN and XOUT XMUTE
VDD and VSS HFI
HFO
DTMF
* This specification are subject to be changed without notice.
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EM91450 SERIES
TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION
Symbol HKS
Function 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. 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. 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 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. 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 . 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 .
PO
HDO
SDO
DRING
RMUTE
* This specification are subject to be changed without notice.
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FUNCTION DESCRIPTIONS Dialing signal selection
The EM91450 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 ROW1 Mode R-Vdd 20 PPS NR Tone R-Vss 10 PPS c. Flash time ROW3 ROW4 NR NR NR R-Vss R-Vss NR R-Vss R-Vss e. Lock number COL2 COL3 NR NR NR R-Vss R-Vss NR R-Vss R-Vss b. M/B ratio ROW2 MBR (%) NR 40:60 R-Vss 33:66 d. Lock control method COL1 Control method R-Vdd key lock NR none lock R-Vss password lock
Tf (ms) 600 100 80 300 Lock number none 0 9 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 PT 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. * This specification are subject to be changed without notice.
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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. 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. 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. * This specification are subject to be changed without notice.
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* 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 EM91450 series. To prevent the unavoidable long distance call, then EM91450 inhibits the key entry during Tdly. Operating flow chart
XMUTE =Hi XMUTE=Lo HKS=Lo HF HF (4) On-hook Hand-free State HKS=Hi HD HF (1) On-hook State HKS=Hi (2) Off-hook State HKS=Lo HF (7) IPP State
HKS=Lo
(3) Off-hook Hand-free State HF
HF HF HD
HD
HD
(6) On-hook Hold-line State
HD HKS=Hi HKS=Lo
(5) Off-hook Hold-line State
: HF = Handfree HD = Hold Truth table Pin level Operating state (1) On-hook, idle state (2) Off-hook line (3) Off-hook, HF line (4) On-hook, HF line (5) Off-hook, HD line (6) On-hook, HD line (7) IPP state Input HKS H L L H L H H I/O XMUTE H/F H/F H/F H/F L/L L/L L/L PO F F F F F F F Output HFO L L H H L L H HDO L L L L H H H DTMF 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.
* This specification are subject to be changed without notice.
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TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION
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 stop bits
ready
0 start bits
1
bit 0
bit1
bit2 bit3 data bits
bit4
bit5
0
Keypad,SDO format and LCD display reference table: Keypad 1 2 3 4 5 6 7 8 9 0 "*"/T # P */"T" HOLD HF F (Lock state) RD bit5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 bit4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 bit3 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 0 1 bit2 0 0 0 1 1 1 1 0 0 0 0 1 1 1 0 0 1 0 1 bit1 0 1 1 0 0 1 1 0 0 1 1 0 0 1 0 1 1 0 0 bit0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 0 0 1 1 1 Display 1 2 3 4 5 6 7 8 9 0 P HOLD Speaker clear all display Lock RD
: The display of LCD panel "Hold","HF","RD" is corresponding to EM32117 with flag types. LOCK function The EM91450 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. * This specification are subject to be changed without notice.
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TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION
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 or flash. 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 flash. 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. 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 ).
* This specification are subject to be changed without notice.
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TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION
I.P.P. DETECT function The EM91450 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), EM91450 will turn on HF and 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 XMUTE pin detect "high" again. The telephone circuit design can allow the legal internal connect user. (see I.P.P Application CIRCUIT).
* This specification are subject to be changed without notice.
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TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION
ABSOLUTE MAXIMUM RATINGS(Ambient temperature is 25 oC, all voltages referenced to VSS)
Items Power supply voltage Input voltage range Operating temperature Storage temperature Power consumption Sym. VDD VIN TOPR TSTO PD Rating 6.0 Vdc VSS-0.3V ~ VDD+0.3V 0 ~ 50 -55 ~ 125 500 Unit V V o C o C mW
DC ELECTRICAL CHARACTERISTICS
(Ambient temperature is 25 oC, VDD=2.5V unless otherwise noted, all voltages referenced to VSS, Fosc=3.579545 MHz)
Parameter Operating voltage Operating current(HKS=0) Memory retention current Standby current Pulse Tone Pulse Tone HKS=1 HKS=0 HKS=1 HKS=0
Sym.
Min. 2.0 2.0 0.8VDD VSS VSS 0.9VDD 0.2 -0.2 2 200 0.2 0.2 -0.2 0.5 142 1 5
Typ. 0.15 0.3 1 10 200 10 400 160 2 -30 -
Max. Unit 5.5 5.5 0.3 0.5 0.1 0.1 10 0.1 30 VDD 0.2VDD 0.1VDD VDD 0.01 50 800 0.75 180 3 -23 V mA uA uA
Condition unload with pull up/down resistor * 8 HKS=1,Vdd=1V unload with pull up/down resistor * 8
Idd Imrt Istby
Distortion(dB)=20 log {[V12+V22+V32 ..... +Vn2)1/2]/[(VL2+VH2)1/2]} VL, VH =ROW group and column group signal. V1, V2, V3 .... Vn = Harmonic signal (BW=300Hz~3500Hz)
* This specification are subject to be changed without notice.
HKS, HFI & DRING pins: input voltage Xmute pin : Schmitt triggers (input pin) HFO & HDO pins source current PO, HFO, XMUTE, RMUTE & SDO pins: sink current PO, XMUTE, RMUTE and SDO pins: leakage current HFI pin input resistance Keyboard scanning pins output current (except COL4/KT) COL4/KT source current sink current DTMF pin: sink current DTMF signal DC level DTMF signal: ac level pre-emphase distortion load resistance

ViH ViL VH-L VL-H IoH IoL IoH Rhfi IoH IoL IoH IoL IoL Vdc Vdtmf Twist THD ZL
V V V mA mA uA K uA A mA mA Vdd mVrms dB dB K at idle state Vo = 2.0 V Vo = 0.5 V Vo = Vdd Vhfi = Vss Vksn=Vss ksn=Vdd Vo=2.0V Vo=0.5V Vdtmf = 0.5 V Vdd = 2.0V ~ 5.5V Row group Column - Row ZL = 5 K THD < - 23dB

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TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION
AC ELECTRICAL CHARACTERISTIC
(Ambient temperature is 25oC, VDD=2.5V unless otherwise noted, all voltages referenced to Vss,Fosc=3.579545 MHz)
Parameter Keyboard debounce time Key tone signal: frequency duration Pause time Pulse to Tone waiting time Flash time
Sym. Tdb Fkt Tkt Tp Tpt Tf
Min. 96 96 3.8 -
Typ. 20 600 30 3.6 3.6 600 100 80 300 20 10 40:60 33:66 800 500 98 98 93 3.9 300
Max. Unit 100 100 4.1 ms Hz ms sec. sec. ms
Condition
Pulse rate Make/Break ratio Inter-digit pause time Minimum tone duration Minimum inter-tone pause HD key release hold function debounce time SDO bit time Off-Hook delay time
PSR MBR Tidp Tp Titp Thdrdb Tbit Tdly
pps % ms
Row3B, Row4B=NR, NR Row3B, Row4B=NR, R-Vss Row3B,Row4B=R-Vss, NR Row3B,Row4B=R-Vss,R-Vss Row1 = R-Vdd Row1 = R-Vss Row2 = NR Row2 = R-Vss PSR = 10 pps PSR = 20 pps Memory dialing
ms ms ms ms
DTMF output frequency (fosc = 3.579545 MHz)
Keyboard scan pin ROW1 (f1) ROW2 (f2) ROW3 (f3) ROW4 (f4) COL1 (f5) COL2 (f6) COL3 (f7) CCITT standard (Hz) 697 770 852 941 1209 1336 1477 Actual output (Hz) 699.1 766.2 847.4 947.9 1215.8 1331.6 1471.8 Deviation (%) 0.30 0.49 -0.53 0.73 0.56 -0.32 -0.35
* This specification are subject to be changed without notice.
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TIMING DIAGRAM
HKS KEY IN Tdb KT Tkt XMUTE SDO PO Tidp DTMF OSC. Tdly
Hi-impedance
2
3
Tm
T T TT b m bm
Tidp
Figure 1. Pulse mode operating timing
HKS KEY IN KT XMUTE SDO PO DTMF OSC.
Hi-impedance
2 Tdb
3
Td
Titp
Titp
Figure 2. DTMF mode operating timing
* This specification are subject to be changed without notice.
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TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION
LNB=2,3 HKS KEY IN KT Tkt XMUTE SDO PO DTMF OSC. Tdly
Hi-impedance
RD/P Tdb
Tm Tidp Tidp T T TT b m bm
Figure 3. Pulse mode LNB redial timing
LNB=2,3 HKS KEY IN Tdb KT Tkt XMUTE SDO PO DTMF OSC. Tdly
Hi-impedance
RD/P
Td
Titp
Td
Titp
Figure 4. DTMF mode LNB redial timing * This specification are subject to be changed without notice.
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TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION
HKS KEY IN KT XMUTE Tp SDO PO DTMF OSC. Tidp Tidp
2 RD/P 3
Figure 5. Pause key operating timing
HKS KEY IN KT XMUTE Tpt 2 */T 3 4
Hi-impedance
SDO PO DTMF OSC.
Figure 6. Pulse to Tone (PT) operating timing
HKS KEY IN KT XMUTE SDO PO Tf DTMF OSC. Tfp=300ms F Tdb
Hi-impedance
Figure 7. Flash key operating timing * This specification are subject to be changed without notice.
Hi-impedance
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HKS KEY IN Tdb KT SDO
SB 0 b0
2
SB
b1 b2 b3 b4 b5 SPB SPB
0
1
0 L
1
Tbit 00
00 M
0
1
Hi-impedance
L=Least significant bit,M=Most significant bit, SB=START bit , SPT=STOP bit Figure 8. SDO operating timing
HKS KEY IN HFO HDO XMUTE SDO PO HF HD HF HD HD HD HF HD HD @ 93 ms Thdrdb
MELODY Hi-impedance
@ : It can be triggled by extension telephone set for hold function release Figure 9. HF and HD operating timing
HFI or HKS KEY
HF
5
0
KT Tdly OSC. "0" digit dialing time SDO
Hi-impedance
Figure 10. Off-Hook delay time * This specification are subject to be changed without notice.
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Toff RING Ton DRING HKS RMUTE
Figure 11. Timing of receiving an incoming call * The external ring detection circuit must send a low signal at the total ring cycle (Ton and Toff)
RING DRING HKS RMUTE
Figure 12. Timing of making an outgoing call
* This specification are subject to be changed without notice.
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10M
OFF-HOOK ON-HOOK
100K LINE
Ring HOOK-SW
+
SPEECH
LINE
-
NETWORK
A92 220K 3K3 1N4148
+
Tip VDD 0.001u 1815 HK 0.1u 4V7
PO
1N4148
1N4148
BRIDGE
XMUTE 1K5
RMUTE
2K2 47K A42 C945 50 47K 100K 0.1u
HDO HFO
470
470u
470K
47K
1815
0.1u 1N4148 SCAN SDO
1N4148 100K
LCD DRIVER
0.01u
VDD 1.2M 4K7
DRING
BRIDGE
APPLICATION CIRCUIT : CONTROL AND IPP DETECT
* This specification are subject to be changed without notice.
HFO
-
+
27V LINE 1u PC817 VDD 16V 1N4148 22M VDD 1M
+
KEYBORAD AND HOLD
HDO
VDD
PO
0.22u/50V
22
21
20
19
18
17
16
15
14
13
12
PO
HKS
HFO
HDO
VDD
DTMF
ROW4
ROW3
EM91450DK
1N4148
VSS DRING COL3 COL2 COL1 KT/COL4 XMUTE XOUT SDO
OFF ON
ROW2
ROW1
RMUTE
Ring' 4.7M
HFI
XIN
-
100
100K
1
2
3
4
5
6
7
8
9
10
11
SW2
DRING
Tip' PC817
BRIDGE
SW2: ON : Enable IPP detect OFF : Disable 3.58M BUZZER 0.1u 0.1u
HF
EM91450 SERIES
TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION
2.10.1999
ILLEGAL CONNECT EXTERNAL PHONE DETECT CIRCUIT
18
HDO ROW1 47K C945 C945 220K 0.1u 1u 22K 47K COL4/KT
LINE
47u
AUTOMATICALLY HOLD RELEASE CIRCUIT
COL4 COL3 COL2 COL1 ROW1 ROW2 ROW3 ROW4
APPLICATION CIRCUIT : KEY BOARD AND HOLD
* This specification are subject to be changed without notice.
1 4 7 */T 2 5 8 0 3 6 9 #
RD/P
HD F
SCAN
VDD
VDD LOCK NUMBER
R-option
LOCK
FLASH TIME
MODE
MBR
Typical Resistor value are 560K For more detail please reference R-option section
EM91450 SERIES
TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION
2.10.1999 19
LCD PANEL
SEG0 SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 SEG24 SEG25 SEG26 SEG27 SEG28 SEG29 SEG30 SEG31 COM0 COM1 COM2 COM3
DIALER PART VDD VDD
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
1M C945
C945 EXTRA 1.5V BATTERY VDD CALENDAR
58 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 SEG26 SEG25 SEG24 SEG23 SEG22 SEG21 SEG20 SEG19 SEG18 SEG17 SEG16 SEG15 SEG14 SEG13 SEG12 SEG11 SEG10
RECOMMAND CRICUIT : C945
EM32117 can used this cricuit replace extra battery . ( But if LCD PANEL's power consumption are too large , the extra battery still be needed. )
HKS VDD
56 55 SEG28 SEG29 SEG30 SEG31 COM0 COM1 COM2 COM3 ENCLND ENRTC SEG27 57
SEG9 SEG8 SEG7 SEG6 SEG5 SEG4 SEG3 SEG2 SEG1 SEG0 FG SPARE2 SPARE1 TEST VSS MS2 MS1 HKS VDD VC2 VC1 SDI V3 V2 XOUT XIN
8 9 10 11 12 13 14 15 16 17 18 19
HK RTC
54 53 52 51
C945
1N4148 VDD
50 49 48 47 46 24/12
470K
EM32117
APPLICATION CIRCUIT : LCD DRIVER USE EM32117
VDD GF
* This specification are subject to be changed without notice.
HOUR SDI
35 34 38 33 32 28 27 37 36 30 29
SDO
32768
40
31
39
VDD HKS
SDI
TEST
0.1u
0.1u 0.1u
NOTED :
MS1 ,MS2 adjust Time
GF JUMP : General Flag icon for LOGO ON/OFF CALENDAR JUMP : CALENDAR ON/OFF
MS1
MS2
RTC HOUR
JUMP : Real Time Clock ON/OFF JUMP : 24/12 format select
EM91450 SERIES
TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION
2.10.1999
20
EM91450 SERIES
TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION
APPLICATION CIRCUIT : LCD DRIVER USE EM32100
TEST AND F32H 37 38 39 40 41 42 43 44 45 46 47 48
COM1
COM2
COM3
TEST2
LCD PANEL
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
SEG23
SEG24
VEE
COM3 COM2 COM1 SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 SEG24
TEST1
SEG5
SEG4
SEG3
SEG2
SEG1
F32H
36 35 34 33 32 31 30 29 28 27 26 25
SEG6 SEG7 SEG8 SEG9 NC SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 VN NC VP
MS1 MS2 SDI HKS VDD XIN NC XOUT VSS 24/12 ENRTC NC
1 2 3 4 5 6 7 8 9 10 11 12 SDI VDD HKS
EM32100
24
23
22
21
20
19
18
17
16
15
14
0.1u
13
VDD
0.1u
RTC
32768
VDD
20p 20p
VDD
HKS
SDI
HOUR
JUMP : Real Time Clock ON/OFF RTC
** EM32100 need HDO and HFO **
MS1 ,MS2 adjust Time SDO
EXTRA 1.5V BATTERY
1N4148
1N4148
1N4148
HDO
* This specification are subject to be changed without notice.
HFO
HK
NOTED :
2.10.1999 21
330K
HOUR
JUMP : 24/12 format select
220K
VDD
C945
47K
MS1
MS2
NC
EM91450 SERIES
TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION
PACKAGE INFORMATION
Example : EM (1) 91450 P (2) (3) (1) ELAN MICRO. pefix (2) Type number (3) Package code: PPDIP KSkinny RSDIP 18/20/28 Lead Plastic Package
E1
1
E
D
A
A1 L
C B eB e B1
18 PDIP
DIM A A1 B B1 C D E E1 e eB L MILIMETERS MIN. MAX. 5.334 0.381 0.356 0.558 1.150 1.778 0.204 0.381 22.35 23.37 7.620 8.255 6.096 7.112 2.286 2.794 10.92 2.921 4.064
20 PDIP
INCHES MILIMETERS INCHES MIN. MAX. DIM MIN. MAX. MIN. MAX. .210 A 5.334 .210 .015 A1 0.381 .015 .014 .022 B 0.356 0.558 .014 .022 .045 .070 B1 1.150 1.778 .045 .070 .008 .015 C 0.204 0.381 .008 .015 .880 .920 D 25.40 26.67 1.000 1.050 .300 .325 E 7.620 8.255 .300 .325 .240 .280 E1 6.096 7.112 .240 .280 .090 .110 e 2.286 2.794 .090 .110 .430 eB 10.92 .430 .115 .160 L 2.921 4.064 .115 .160 DIM A A1 B B1 C D E E1 e eB L MILIMETERS MIN. MAX. 6.350 0.381 0.356 0.558 1.016 1.778 0.204 0.381 35.56 37.85 15.24 15.88 13.21 14.73 2.286 2.794 17.78 2.921 5.080
28 PDIP
INCHES MIN. MAX. .250 .015 .014 .022 .040 .070 .008 .015 1.400 1.490 .600 .625 .520 .580 .090 .110 .700 .115 .200
* This specification are subject to be changed without notice.
2.10.1999
22
EM91450 SERIES
TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION
22/24 Lead Plastic Package-Skinny
E1
1
E
D
A
A1 L
C B eB e B1
22 PDIP (skinny)
DIM A A1 B B1 C D E E1 e eB L MILIMETERS MIN. MAX. 4.752 0.381 0.356 0.558 1.27 1.778 0.204 3.556 25.90 26.67 7.620 8.255 6.223 6.604 2.286 2.794 8.382 10.16 2.921 4.064 INCHES MIN. MAX. .180 .015 .014 .022 .050 .070 .008 .014 1.02 1.05 .300 .325 .245 .260 .090 .110 .330 .400 .115 .160 DIM A A1 B B1 C D E E1 e eB L
24 PDIP (skinny)
MILIMETERS MIN. MAX. 4.572 0.381 0.356 0.558 1.27 1.778 0.204 0.381 31.24 32.26 7.620 8.255 6.223 6.731 2.286 2.794 8.636 9.652 2.921 4.064 INCHES MIN. MAX. .180 .015 .014 .022 .050 .070 .008 .015 1.23 1.270 .300 .325 .245 .265 .090 .110 .340 .380 .115 .160
* This specification are subject to be changed without notice.
2.10.1999 23
EM91450 SERIES
TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION
42 SDIP Package
E1
E
D
A A2 C A1 L
D1 B eB e B1
42 SDIP
DIM A A1 A2 B B1 C D E1 e eB D1 L MILIMETERS MIN. MAX. 5.08 0.381 3.937 4.191 0.356 0.559 0.914 1.116 0.204 0.304 36.70 37.34 13.84 14.10 1.727 1.829 15.24 17.78 0 0.127 2.921 3.429 INCHES MIN. MAX. 0.200 0.015 0.155 0.165 0.014 0.022 0.036 0.044 0.008 0.012 1.445 1.470 0.545 0.555 0.068 0.072 0.600 0.70 0 0.005 0.115 0.135
* This specification are subject to be changed without notice.
2.10.1999
24

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