Datasheet EM91215CK, EM91215BP, EM91215AP Datasheet (ELAN)

GENERAL DESCRIPTION

The EM91215 is a series of tone/pulse switchable dialers that is composed of T/P dialer and T/P dialer with 13
set memories. The EM91215 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.

•13 set one touch or (3 set one touch and 10 set two 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.

EM91215 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

EM91215 SERIES

ORDERING INFORMATION

Versions list

VERSION LNB KT SAVE HF SDO(LCD) PMUTE
EM91215A √√√ √
EM91215B √√√ √ √
EM91215C √√√ √ √ √

* This specification are subject to be changed without notice.

10.1.1997

1

EM91215

Pin Assignment

EM91215 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

EM91215AP

COL5

COL4/KT

COL3
COL2
COL1

XIN

XOUT

XMUTE

VSS

1
2
3
4
5
6
7
8
9

PM

17

PO

16

ROW4

15

ROW3

14

ROW2

13

ROW1

12

HKS

11

VDD

10

DTMF

18

EM91215CK

ROW6

COL5

COL4/KT

COL3
COL2
COL1

XIN

XOUT

XMUTE

VSS

HFI

22

1

21

2

20

3

19

4

18

5

17

6

16

7

15

8

14

9

13

10

12

11

Keyboard Arrangement

Type A Type B

M4
M9

COL5

EM1
EM2

F

EM3

A

ST
M5

M10

ROW5/SDO

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

SAVE

RD/P

ROW5/SDO
PM
PO
ROW4
ROW3
ROW2
ROW1
HKS
VDD
DTMF
HFO

ROW1
ROW2
ROW3
ROW4

ROW6

COL1

1
4
7

*
M1
M6

EM91215BP

COL5

COL4/KT

COL3
COL2
COL1

XIN

XOUT

XMUTE

VSS

HFI

COL2

2
5
8

0
M2
M7

20

1
2
3
4
5
6
7
8
9

10

COL3

M3
M8

PM

19

PO

18

ROW4

17

ROW3

16

ROW2

15

ROW1

14

HKS

13

VDD

12

DTMF

11

HFO

M4
M9

COL5

EM1
EM2

F

EM3

A

ST
M5

M10

COL4/KT

P→T

3
6
9

RD/P

#

@When ROW5 is selected by R option (COL5), there are 13 sets one touch memory version in EM91215C

provided.

FUNCTIONAL BLOCK DIAGRAM

HFO

SDO

COL1
COL2
COL3

COL4/KT

COL5

XIN

XOUT

ROW1

ROW6

Keyboard

interface

(column)

Oscillator

Keyboard

~

interface

(Row)

VDD

* This specification are subject to be changed without notice.

PM

Output circuit

Memory

(Melody)

Timing/Control circuit

Input circuit

HKS HFI

XMUTE

latch

decoder

generator

VDD

Row/Column

programming counter

&

D/A

converter

Pulse

DTMF

PO

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2

EM91215 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

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. 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.

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.
Otherwise, this pin stays “High impedance” level.

V

and V

DD

SS

HFI Handfree inputs pin which accepts falling edge signal to turn “on” or turn “off”

HFO Handfree outputs pin that is designed to control telephone line for on-hook dialing or

DTMF The DTMF (Dual Tone Multi-Frequency) output pin. Normally, this pin stays“Low”

HKS Control signal inputs pin that is corresponding hook switch status. When handset was

PO Pulse signal outputs pin that is NMOS open-drain output structure. Normally, this pin

PM Pulse signal outputs pin that is CMOS inverter output structure. Normally, this pin

SDO SDO function output that is NMOS open-drain structure. When there is a valid entry

Positive and negative power supply input pins. Recommended operating voltage from

2.0Vdc to 5.5Vdc.

handfree function. This pin is hysteresis input structure and built-in pull up resistor
(typically 200 Kohms).

control speakerphone circuit for handfree conversation. When handfree function is
executed, this pin will switch to“High”. Otherwise, this pin stays “Low” level.

level. In Tone dialing mode, this pin will output DTMF signal that is corresponding
to keyboard 0..9, * and # keys.

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.

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.

stays “Low” level. During pulse signal dialing or flash function executing, this pin will
switch to “High” level to control the external circuit.

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.

* This specification are subject to be changed without notice.

10.1.1997

3

FUNCTION DESCRIPTIONS

Dialing signal selection

The EM91215 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. DTMF signal

ROW3 ROW4 Tf (ms) COL1 Td (ms) Titp (ms)

NR NR 600 R-Vdd 90 90

NR R-Vss 100 NR 98 98
R-Vss NR 80 R-Vss 83 83
R-Vss R-Vss 300

e. Pause time and P-T wait time f. Keyboard operate type

COL2 Tp (sec) Tpt (ms) COL3 Type

NR 3.6 3.6 NR A
R-Vss 2.0 2.0 R-Vss B

g. ROW5/SDO pin functions

COL5 ROW5/SDO pin

NR SDO

R-Vss ROW5

EM91215 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

(Note): The option of COL5 pin is only for EM91215.

If select SDO function, the memory type is
(1T*3+2T*10)
If select ROW5 function, the memory type is
(1T*3+2T*10) and (1T*13)

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.

Redialing:

After normal dialing, directly keying
numbers that are stored into LNB memory will be dialed output.

* This specification are subject to be changed without notice.

F key (or On-Off hook once) and keying RD key on keyboard. The

10.1.1997

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EM91215 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

SAVE redial memory

The SAVE meomry is designed in EM91215 series to support 32 digits capacity buffer for second redial,
pager, Memory and other system applications.

Storing : EM91215 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 EM91215 series incorporated several sets repertory memory and each one can store number up to 16 digits.

These memories were designed to 13 sets types. As operating precedure, all of the memories can be separated
to dirtect (one-touch) and indirect (two-touch ) operation. In memory storing, if stored numbers are more than
16 digits that only the previous 16 digits can be stored into specific memory. Otherwise, these numbers can be
stored entirely. After memory dialed out, the content of LNB is keeping to current data.

Storing of 13 sets memory types

Direct (one-touch) operation

Off-hook (or turn on HF function), push
numbers d1, d2, .. , dn will be stored into memory location “EMn”. The “EMn” expressed emergency memory
EM1 to EM3.

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.

ST, d1, d2, .. , dn [ST], EMn or M1~M10 (ROW5 optioned). The

Dialing (after memory dialed out, the content of LNB is keeping to current data)

Direct (one-touch) memory operation

• To select Pulse or Tone mode.

• Off-hook (or Turn on HF function), push

Mn (or EMn) key. The numbers that are stored in direct memory

location “Mn (or EMn)” will be dialed out in Pulse or Tone mode as selection. The “n” expressed digital

* This specification are subject to be changed without notice.

10.1.1997

5

EM91215 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

number from 1~10 decided by dialers’ memory sets.

Indirect (two-touch) memory

• 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
out as following sequence:

d1, d2, .. , dn, Tp, k1, k2, .. , kn.

d1, d2, .. , dn, RD/P, k1, k2, .. , kn . These numbers will be dialed

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 Input/Output pin level

HKS PO XMUTE PM HFO
(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 L H

(3) On-hook, HF line H F F L H
Note : F=floating (high impedance); H=logic “High”; L=logic “Low” level.

* This specification are subject to be changed without notice.

10.1.1997

6

EM91215 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

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 bit4 bit5
data bits

0

SDO Keypad Encoded table:

♦ Digital key (b5,b4=0,0)

keypad 1 2 3 4 56789 0“*”/T # P */”T” or 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” or P-T 0 0 1 1 1 0

F 1 0 1 1 1 1 clear all display

* This specification are subject to be changed without notice.

10.1.1997

7

EM91215 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

ABSOLUTE MAXIMUM RATINGS(Ambient temperature is 25 °C, all voltages referenced to V

)

SS

Items Sym. Rating Unit

Power supply voltage V
Input voltage range V
Operating temperature T
Storage temperature T
Power consumption P

DD

IN

OPR

STO

D

VSS-0.3V ~ VDD+0.3V V

6.0 Vdc V

0 ~ +50 °C

-55 ~ 125 °C

500 mW

ELECTRICAL CHARACTERISTICS

(Ambient temperature is 25 °C, VDD=2.5V unless otherwise noted, all voltages referenced to VSS, 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 ViH 0.8Vdd - Vdd V

pins: input voltage ViL Vss - 0.2Vdd
HFO & PM pins source current IoH 0.2 - - mA Vo = 2.0 V
PO, HFO, XMUTE, IoL -0.2 - - mA Vo = 0.5 V

& PM, SDO pins: sink current
PO, XMUTE and SDO IoH - - ±0.001 uA Vo = Vdd
pins: leakage current
HFI pin input resistance Rhfi - 200 - KΩ Vhfi = Vss
Keyboard scanning pins IoH 2 10 50 uA Vksn=Vss
output current (except COL4/KT) IoL 200 400 800 Vksn=Vdd
COL4/KT source current IoH 0.2 - - mA Vo=2.0V

sink current IoL 0.2 - - Vo=0.5V

* This specification are subject to be changed without notice.

10.1.1997

8

EM91215 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

ELECTRICAL CHARACTERISTIC

(Ambient temperature is 25°C, V

Parameter Sym. Min. Typ. Max. Unit Condition

Keyboard debounce time Tdb - 20 - ms
Key tone signal:
frequency Fkt - 600 - Hz

○○○○○○○○○○○○○○○○○○○

present duration Tkt - 30 - ms
Pause time and pulse to tone Tp - 3.6 - sec. COL2=NR

Flash time Tf - 600 - Row3, Row4=NR, NR

Flash pause time Tfp - 300 - ms
Pulse rate PSR - 20 - pps Row1 = R-Vdd

Make/Break ratio MBR - 40:60 - % Row2 = NR

Inter-digit pause time Tidp - 800 - ms PSR = 10 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 KΩ

○○○○○○○○○○○○○○○○○○○

load resistance ZL 5 - - KΩ THD <−23dB

Minimum tone duration T

Minimum inter-tone pause Titp 88 90 92 ms Memory dialing

SDO every bit time Tbit 3.8 3.9 4.1 ms

=2.5V unless otherwise noted, all voltages referenced to Vss,Fosc=3.579545 MHz)

DD

Tpt - 2 - sec. COL2=R-Vss

- 100 - ms Row3, Row4=NR, R-Vss

- 80 - Row3, Row4=R-Vss, NR

- 300 - Row3, Row4=R-Vss,R-Vss

- 10 - Row1 = R-Vss

- 33:66 - Row2 = R-Vss

- 500 - PSR = 20 pps

96 98 100

D

88 90 92 ms Memory dialing
81 83 85

96 98 100

81 83 85

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

* This specification are subject to be changed without notice.

10.1.1997

9

TIMING DIAGRAM

HKS

EM91215 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

KEY IN

KT

XMUTE

PM

SDO

PO

DTMF

OSC.

Tdb

2

Tkt

Tsdo

Tidp T

Tm

T

TbT

m

b

m

Figure 1. Pulse mode operating timing

3

Tidp

Hi-impedance

HKS

KEY IN

KT

XMUTE

PM

SDO

PO

DTMF

OSC.

2

Tdb

Td

Titp

Figure 2. DTMF mode operating timing

3

Titp

Hi-impedance

* This specification are subject to be changed without notice.

10.1.1997

10

LNB=2,3

HKS

EM91215 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

KEY IN

KT

XMUTE

PM

SDO

PO

DTMF

OSC.

LNB=2,3

Tdb

RD

Tkt

Tm

Tidp

TbT

TbT

m

m

Figure 3. Pulse mode LNB redial timing

Tidp

Hi-impedance

HKS

KEY IN

Tdb

KT

XMUTE

PM

SDO

PO

DTMF

OSC.

RD

Tsdo

Td

Titp

Figure 4. DTMF mode LNB redial timing

* This specification are subject to be changed without notice.

Td

Titp

Hi-impedance

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11

HKS

KEY IN

KT

EM91215 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

2

RD/P 3

XMUTE

PM

SDO

PO

DTMF

OSC.

HKS

KEY IN

XMUTE

KT

PM

SDO

PO

Tp

Tidp

Figure 5. Pause key operating timing

2 */T

34

Tpt

Tidp

Hi-impedance

DTMF

OSC.

HKS

KEY IN

KT

XMUTE

PM

SDO

PO

DTMF

OSC.

Tdb

Figure 6. Pulse to Tone (P→T) operating timing

F

Tf

Tfp=300ms

Figure 7. Flash key operating timing

Hi-impedance

Hi-impedance

* This specification are subject to be changed without notice.

10.1.1997

12

HKS

EM91215 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

KEY IN

Tdb

KT

SDO

sT

sT b0

0

b1

0

1

1

L

<Note>L=LSB,M=MSB, sT=START bit time, spT=STOP bit time

Figure 8. SDO operating timing

HKS

KEY IN

XMUTE

HFO

PM

SDO

HF

HF

HF

HF HF

2

b2 b3 b4

Tbit
0000

HF

b5 spT

0

M

spT

1

Hi-impedance

HF

PO

DTMF

Hi-impedance

Figure 9. HF operating timing

* This specification are subject to be changed without notice.

10.1.1997

13

APPLICATION CIRCUIT

CE

Q14

2

C945

EM91215 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AUDIO

POWER

AMPLIFER

1

HANDFREE

4

SW1B

5

HANDSET

6

HOOK

C16

.001U

R54

R49

D6

1 2

10M

SW1A

R55

470K

R33

2K7

1 2

1N4148

R48

ONHOOK

OFFHOOK

1

3

2

D16

1 2

1K5

D7

100K

3

1

R56

1N4148

EM32100

Q18

2

3

R36

470K

1N4148

R52

Q6

A92

R47

3

D17
1 2

HFO

1815

1

220K

2

BRIDGE

JP9

1

47K

2

D14

220K

1N4148

Q19

1815

3

C31

2

1N4148

SPEECH

NETWORK

2 TO 4 LINE

PM

1.5V

JUMPER

CE

LCD DRIVER

VCC

560K

R67

1

50

C17

.01U

5V1

D13

220uF

C24

.1u

Q4

C945

1

C25

.1U

3

R37

100K

R43

47K

1 2

D5

1N4148

47K

R68

100K

2

A42

Q7

1

3

R69

2

2K2

R35

560K

SDO

HF

HFO

12

DTMF

13

VDD

14

HKS

15

ROW1

16

ROW2

17

ROW3

18

ROW4

19

PO

20

PM

21
22

560K

560K

JUMPER

VDD

EM91215CK

SDO/ROW5

560k

EM1

SAVE
369

JUMPER

258

147

HFI

11

VSS

10

XMUTE

9

XOUT

8

XIN

7

COL1

6

COL2

5

COL3

4

COL4/KT

3

COL5

2

ROW6

1

EM2

EM3

F

A

ST

M5

M10

M4

RD/P
#

M3

M8

0

M2

M7

*/TM1M6

3.58MHz

10p 10p

BUZZER

M9

560k

560k

560k

TIP

RING

* This specification are subject to be changed without notice.

VDD

JUMPER

JUMPER

10.1.1997

14

EM32100 Application Circuit :

1

2

3

4

5

6

7

8

9

10

11

12

36

35

34

33

32

31

30

29

28

27

26

25

2423222120191817161514

13

3738394041424344454647

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

.1µ

.1µ

EM32100

V

CC

8/10 Digits LCD Pannel

1.5V

32768Hz

1µ

100k

200k

100k

20p

20p

3

1

3

1

1

1

2

2

2

3

1

2

2

2

C945

220k

220k

47kDIODE

DIODE

DIODE

C945

V

DD

HKS

HDO

HFO

V

SS

SDO

EM91215 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

Package type : QFP 48 pins or chip form provided

* This specification are subject to be changed without notice.

10.1.1997

15

EM91215 SERIES

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

123

ON

OFF

CALENDAR

123

ON

OFF

RTC

123

ON

OFF

HOUR

20p

20p

32768Kz

.1µF

.1µF

.1µF

.1µF

1

3

2

SW HOOK

100k

3

.1µ

1

2

C945

470k

V

DD

LINE

Hook Switch detection circuit

SDI

LCD110

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

EM32116 Application Circuit :

Package type : QFP 64 pins or chip form provided

* This specification are subject to be changed without notice.

10.1.1997

16

PACKAGE INFORMATION

Example :

EM 91215 P
(1) (2) (3)

(1) ELAN MICRO. pefix
(2) Type number
(3) Package code:

18/20/28 Lead Plastic Package

EM91215 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

P→PDIP
K→Skinny
R→SDIP

E1

E

eB

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

1

C

B

e

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

D

A

A1

L

B1

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

* This specification are subject to be changed without notice.

10.1.1997

17

22/24 Lead Plastic Package-Skinny

EM91215 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

E1

1

E

C

B

eB

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

D

A

A1

e

B1

L

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

* This specification are subject to be changed without notice.

10.1.1997

18

42 SDIP Package

EM91215 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

E1

E

C

D1

eB

B

e

B1

D

A2

A

A1

L

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

* This specification are subject to be changed without notice.

10.1.1997

19