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TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
EM91203 SERIES EM91203 SERIES
GENERAL DESCRIPTION
The EM91203 is a series of tone/pulse switchable dialers that is composed of T/P dialer and T/P dialer with 3 sets memories. The EM91203 series provides necessary functions of telephone set for application in any environment, such as Pulse dialing, Tone (DTMF) dialing, Handfree dialing, keying tone , mute and pulse mute functions. Beside this, SDO (Serial Data Output) functions is provided in advance version that 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, Pause time, P-T wait time and keyboard type. * SDO function supports LCD driver and voice synthesizer to indicate dialing numbers. * Handfree function provides on-hook dialing and speakerphone application. * 3-set one touch repertory memory, each one can store data up to 16 digits. * A 32-digit LNB (last number) redial memory. * A 32-digit SAVE redial memory. * Keytone function provides rapidly keying recognition. * Pulse mute function supports pulse dialing application. * Using 3.579545 MHz crystal or ceramic resonator. * Package forms: PDIP, skinny.
ORDERING INFORMATION
Versions list VERSION EM91203A EM91203B EM91203C LNB KT SAVE HF SDO(LCD) PMUTE
* This specification are subject to be changed without notice.
10.1.1997
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EM91203 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
EM91203
Pin Assignment
EM91203AP
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 PM PO ROW4 ROW3 ROW2 ROW1 HKS VDD DTMF
EM91203BP
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 PM PO ROW4 ROW3 ROW2 ROW1 HKS VDD DTMF HFO
EM91203CK
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 PM PO ROW4 ROW3 ROW2 ROW1 HKS VDD DTMF HFO
Keyboard Arrangement
Type A
ROW1 ROW2 ROW3 ROW4 COL1 1 4 7 */T COL2 2 5 8 0 COL3 3 6 9 # COL4/KT SAVE F RD/P COL5 EM1 EM2 EM3 ST
Type B
ROW1 ROW2 ROW3 ROW4 COL1 1 4 7 * COL2 2 5 8 0 COL3 3 6 9 # COL4/KT SAVE F PT RD/P COL5 EM1 EM2 EM3 ST
FUNCTIONAL BLOCK DIAGRAM
SDO HFO PM XMUTE COL1 COL2 COL3 COL4/KT COL5 Keyboard interface (column) Memory XIN XOUT latch & decoder D/A converter DTMF Output circuit Row/Column programming counter
Oscillator
Timing/Control circuit ROW1 Keyboard interface (Row) Input circuit Pulse generator PO
ROW4
~
VDD HFI HKS
VDD
* This specification are subject to be changed without notice.
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EM91203 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
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 "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. 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. 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. While DTMF output, the key tone will be disabled. 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. 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. Otherwise, this pin stays "High impedance" level. 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) 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. 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. Pulse signal outputs pin that is CMOS inverter output structure. Normally, this pin stays "Low" level. During pulse signal dialing or flash function executing, this pin will switch to "High" level to control the external circuit. 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. No connection.
COL1~COL3 and COL5
COL4/KT
XIN and XOUT XMUTE
VDD and VSS HFI
HFO
DTMF
HKS
PO
PM
SDO
NC
* This specification are subject to be changed without notice.
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EM91203 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
FUNCTION DESCRIPTIONS Dialing signal selection
The EM91200s 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 Tf (ms) NR NR 600 NR R-Vss 100 R-Vss NR 80 R-Vss R-Vss 300 e. Pause time and P-T wait time COL2 Tp (sec) Tpt (ms) NR 3.6 3.6 R-Vss 2.0 2.0 b. M/B ratio ROW2 MBR (%) NR 40:60 R-Vss 33:66 d. DTMF signal COL1 Td (ms) R-Vdd 90 NR 98 R-Vss 83
Titp (ms) 90 98 83
f. Keyboard operate type COL3 Type NR A R-Vss B
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. 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. SAVE redial memory The SAVE meomry is designed in EM91203 series to support 32 digits capacity buffer for second redial, pager, Memory and other system applications. * This specification are subject to be changed without notice. 10.1.1997 4
EM91203 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
Storing : EM91203 series support two operating methods to store numbers into SAVE redial memory. Method 1 * To select Pulse or Tone mode. * Off-hook (or turn on HF function), push d1, d2, .. , dn. The numbers d1, d2, .. , dn will be dialed out in Pulse or Tone mode as selection. * After dn had been dialed out and push [ST], Save key. If the keying numbers are more than 32 digits that content of SAVE memory can not be updated. Otherwise, these numbers will be stored into SAVE memory. In the [] key allows to be omitted. Method 2 Off-hook (or turn on HF function), push ST, d1, d2, .. , dn, [ST], Save. If the keying numbers are not over 32 digits, the numbers d1, d2, .. , dn will be stored in SAVE redial memory automatically. Dialing : * To select Pulse or Tone mode. * Off-hook (or turn on HF function), push Save key. The numbers stored in SAVE memory will be dialed out in Pulse or Tone mode as selection.
Repertory memory
The EM91203 series incorporated several sets repertory memory and each one can store number up to 16 digits. As 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 decided by dialers' memory sets.
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.
* This specification are subject to be changed without notice.
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EM91203 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
* 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 or P-T) key operation
The Pulse to Tone (*/T or P-T) key is designed to support toll dialing (long distance call) or PABX system operation. The "*/T (or P-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, (or P-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. Truth table Operating state (0) On-hook, idle state (1) Off-hook line (2) Off-hook, HF line (3) On-hook, HF line HKS H L L H PO F F F F
Input/Output pin level XMUTE PM F L F L F L F L
HFO L L H H
Note : F=floating (high impedance); H=logic "High"; L=logic "Low" 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 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.
ready
0 start bits
1
bit 0
bit1
bit2 bit3 data bits
bit4
bit5
0 stop bits
1
* This specification are subject to be changed without notice.
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EM91203 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
SDO Keypad Encoded table: Digital key (b5,b4=0,0) keypad 1 2 3 4 5 6 7 8 9 output b3,b2,b1,b0 0001 0010 0011 0100 0101 0110 0111 1000 1001 Display 1 2 3 4 5 6 7 8 9 Function key (b5,b4=1,0) keypad F output b3,b2,b1,b0 1111 Display clear all display
0
"*"/T
#
P
*/"T" or P-T 1110
1010 1011 0
1100 1101 P
Keypad,SDO format and LCD display reference table: Keypad 1 2 3 4 5 6 7 8 9 0 "*"/T # P */"T" or P-T F bit5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 bit4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 bit3 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 bit2 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 bit1 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 bit0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 Display 1 2 3 4 5 6 7 8 9 0 P clear all display
* This specification are subject to be changed without notice.
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EM91203 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
ABSOLUTE MAXIMUM RATINGS(Ambient temperature is 25 C, 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 C C mW
ELECTRICAL CHARACTERISTICS
(Ambient temperature is 25 C, VDD=2.5V unless otherwise noted, all voltages referenced to VSS, Fosc=3.579545 MHz)
Parameter Operating voltage Operating current(HKS=0) Pulse Tone Pulse Tone Pulse Tone HKS=1 HKS=0 HKS=1 HKS=0
Sym.
Min. 2.0 2.0 -
Typ.
Max. Unit
Condition unload unload with pull up/down resistor * 8 HKS=1,Vdd=1V unload with pull up/down resistor * 8
Idd
Memory retention current Standby current
Imrt Istby
HKS, HFI pins: input voltage HFO & PM pins source current PO, HFO, XMUTE, & PM, SDO pins: sink current PO, XMUTE and SDO pins: leakage current HFI pin input resistance Keyboard scanning pins output current (except COL4/KT) COL4/KT source current sink current
ViH ViL IoH IoL IoH Rhfi IoH IoL IoH IoL
5.5 V 5.5 0.15 0.3 0.3 0.5 mA 0.15 0.3 0.3 0.5 0.001 0.1 uA 0.001 0.1 1 10 uA -0.001 0.1 10 30 0.8Vdd Vdd V Vss 0.2Vdd 0.2 mA -0.2 mA 2 200 0.2 0.2 200 10 400 0.001 uA 50 800 K uA mA
Vo = 2.0 V Vo = 0.5 V Vo = Vdd Vhfi = Vss Vksn=Vss Vksn=Vdd Vo=2.0V Vo=0.5V
* This specification are subject to be changed without notice.
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EM91203 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
ELECTRICAL CHARACTERISTIC
(Ambient temperature is 25C, VDD=2.5V unless otherwise noted, all voltages referenced to Vss,Fosc=3.579545 MHz)
Parameter Keyboard debounce time Key tone signal: frequency present duration Pause time and pulse to tone Flash time

Sym. Tdb Fkt Tkt Tp Tpt Tf
Min. -0.2 0.5 142 1 5 96 88 81 96 88 81 3.8
Typ. 20 600 30 3.6 2 600 100 80 300 300 20 10 40:60 33:66 800 500 160 2 -30 98 90 83 98 90 83 3.9
Max. Unit ms
Condition
Flash pause time Pulse rate Make/Break ratio Inter-digit pause time DTMF pin: sink current DTMF signal DC level DTMF signal: ac level pre-emphase distortion load resistance Minimum tone duration

Tfp PSR MBR Tidp IoL Vdc Vdtmf Twist THD ZL TD
Minimum inter-tone pause SDO every bit time
Titp Tbit
Hz ms sec. COL2=NR sec. COL2=R-Vss Row3, Row4=NR, NR ms Row3, Row4=NR, R-Vss Row3, Row4=R-Vss, NR Row3, Row4=R-Vss,R-Vss ms pps Row1 = R-Vdd Row1 = R-Vss % Row2 = NR Row2 = R-Vss ms PSR = 10 pps PSR = 20 pps mA Vdtmf = 0.5 V 0.75 Vdd Vdd = 2.0V ~ 5.5V 180 mVrms Row group 3 dB Column - Row -23 dB RL = 5 K K THD <-23dB 100 92 ms Memory dialing 85 100 92 ms Memory dialing 85 4.1 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
10.1.1997 9
* This specification are subject to be changed without notice.

EM91203 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
TIMING DIAGRAM
HKS KEY IN KT Tkt XMUTE PM SDO PO Tidp DTMF OSC.
Hi-impedance
2 Tdb
3
Tsdo
Tm
T T TT b m bm
Tidp
Figure 1. Pulse mode operating timing
HKS KEY IN KT XMUTE PM 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.
10.1.1997
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EM91203 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
LNB=2,3 HKS KEY IN KT Tkt XMUTE PM SDO PO DTMF OSC.
Hi-impedance
RD 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 XMUTE PM SDO Tsdo PO DTMF OSC.
Hi-impedance
RD
Td Titp
Td
Titp
Figure 4. DTMF mode LNB redial timing
* This specification are subject to be changed without notice.
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EM91203 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
HKS KEY IN KT XMUTE PM SDO PO DTMF OSC.
Hi-impedance 2 RD/P 3
Tp
Tidp
Tidp
Figure 5. Pause key operating timing
HKS KEY IN KT XMUTE PM SDO PO DTMF OSC.
Hi-impedance
2
*/T
3
4
Tpt
Figure 6. Pulse to Tone (PT) operating timing
HKS KEY IN KT XMUTE PM SDO PO Tf DTMF OSC.
Hi-impedance
F Tdb
Tfp=300ms
Figure 7. Flash key operating timing * This specification are subject to be changed without notice.
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EM91203 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
HKS KEY IN Tdb KT SDO
sT sT b0 b1 b2 b3 b4 b5 spT spT
2
0
1
0 L
1
Tbit 00
00 M
0
1
Hi-impedance
L=LSB,M=MSB, sT=START bit time, spT=STOP bit time Figure 8. SDO operating timing
HKS KEY IN XMUTE HFO HF HF HF HF HF HF HF
PM SDO PO
DTMF Hi-impedance
Figure 9. HF operating timing
* This specification are subject to be changed without notice.
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13
SW1B 4 HANDFREE HANDSET 5 6 D6 2 2K7 R33 2 CE 1D16 2 R56 3 47K 1 1N4148 2 1N4148 2 Q14 C945 2 3 1 2 C31 3 1 C24 220uF 5V1 C17 .01U 50 R67 .1u D13 3 R37 C25 .1U 100K 1 Q4 C945 2 Q19 1815 JP9 HFO 1D17 Q18 1815 EM32100 1K5 R36 470K R55 470K 1 R49 1N4148 C16 .001U HOOK
TIP 1 R48 100K D7 1N4148 R52 220K
R54
SW1A 1
10M ONHOOK
2
3
OFFHOOK
1
3
R47
2
Q6 A92
BRIDGE
APPLICATION CIRCUIT
RING
220K
1 D14 1N4148
2
R35 2K2
R69 47K
Q7
3 D5 1 1N4148 47K R43 AUDIO POWER AMPLIFER
2 A42
22
21
20
19
18
17
16
15
14
13
12
SDO
HKS
VDD
ROW4
ROW3
ROW2
ROW1
DTMF
HFO
560K
PM
PO
NC
COL5
COL4/KT
COL3
COL2
COL1
XIN
XOUT
XMUTE
VSS
1
2
3
4
5
6
7
8
9
10
4 9 # RD/P ST (PT) EM3
5
6
F
EM2
7
8
*/T
0
VDD
11
HFI
* This specification are subject to be changed without notice.
560K 560K 560K JUMPER CE VCC SDO 560k SPEECH LCD DRIVER 1.5V NETWORK PM 2 TO 4 LINE
1
R68 2 100K
VDD
JUMPER
JUMPER
EM91203CK
1
2
3
SAVE EM1
3.58MHz 10p 560k BUZZER 10p
HF
560k
560k
560k
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
EM91203 SERIES
10.1.1997
JUMPER
14
8/10 Digits LCD Pannel
SEG6 SEG7 SEG8 SEG9 NC SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16
36 35 34 33 32 31 30 29 28 27 26 25
EM32100 Application Circuit :
220k 220k 3 2 2 DIODE 1 2 DIODE 1 DIODE 2 1 20p 32768Hz 20p 47k 2 3 C945 1 1.5V 1 C945 100k
SDO
HKS
HDO
VSS
HFO
1 2 3 4 5 6 7 8 9 10 11 12
VDD 200k
MS1 MS2 SD1 HKS VDD XIN NC XOUT VSS 24/12 ENRTC NC
* This specification are subject to be changed without notice.
Package type : QFP 48 pins or chip form provided
EM32100
1 3 100k
2
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 VEE VN VP NC
24 23 22 21 20 19 18 17 16 15 14 13 .1 .1
VCC
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
EM91203 SERIES
10.1.1997
15
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
* This specification are subject to be changed without notice. Package type : QFP 64 pins or chip form provided
Hook Switch detection circuit LINE
EM32116 Application Circuit :
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
EM91203 SERIES
10.1.1997
LCD110
16
2 1 3 SW HOOK 100k 3 .1 C945 1 24/12 ENRTC ENCLND COM3 COM2 COM1 SEG31 SEG30 SEG29 SEG28 SEG27 SEG26 2 VDD .1F
SDI
VDD
470k ON OFF OFF OFF 32768Kz .1F .1F 1 2 3 ON 1 2 3 ON HOUR 1 2 3 20p 20p CALENDAR RTC
EM32116
TEST2 BATCKOF BATLOW SEG0 SEG1 SEG2 SEG3 SEG4 SEG5 SRG6 SEG7 SEG8 SEG9
.1F
XOUT XIN VSS VC2 VC1 V3 V2 VDD HKS SDI MS2 MS1 F32HZ TEST1
VDD
1.5V
EM91203 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
PACKAGE INFORMATION
Example : EM (1) 91203 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 MILIMETERS DIM MIN. MAX. A 6.350 A1 0.381 B 0.356 0.558 B1 1.016 1.778 C 0.204 0.381 D 35.56 37.85 E 15.24 15.88 E1 13.21 14.73 e 2.286 2.794 eB 17.78 L 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.
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EM91203 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
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.
10.1.1997
18
EM91203 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
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.
10.1.1997
19

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