EMC EM91240C Tone/pulse switchable dialer with lcd interface Datasheet

EM91240
SERIES
EM91240
SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
GENERAL DESCRIPTION
The EM91240 is a series of tone/pulse switchable dialers that is composed of T/P dialer and T/P dialer with
40-set memories. The EM91240 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.
• 40-set three 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
EM91240A
EM91240B
EM91240C
LNB
√
√
√
KT
√
√
√
SAVE
√
√
√
* This specification are subject to be changed without notice.
HF
SDO(LCD)
√
√
√
PMUTE
√
√
√
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EM91240 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
EM91240
Pin Assignment
EM91240BP
EM91240AP
COL5
COL4/KT
COL3
COL2
COL1
XIN
XOUT
XMUTE
VSS
18
17
16
15
14
13
12
11
10
1
2
3
4
5
6
7
8
9
20
19
18
17
16
15
14
13
12
11
1
2
3
4
5
6
7
8
9
10
COL5
COL4/KT
COL3
COL2
COL1
XIN
XOUT
XMUTE
VSS
HFI
PM
PO
ROW4
ROW3
ROW2
ROW1
HKS
VDD
DTMF
PM
PO
ROW4
ROW3
ROW2
ROW1
HKS
VDD
DTMF
HFO
EM91240CK
NC
COL5
COL4/KT
COL3
COL2
COL1
XIN
XOUT
XMUTE
VSS
HFI
22
21
20
19
18
17
16
15
14
13
12
1
2
3
4
5
6
7
8
9
10
11
SDO
PM
PO
ROW4
ROW3
ROW2
ROW1
HKS
VDD
DTMF
HFO
Keyboard Arrangement
Type A
ROW1
ROW2
ROW3
ROW4
COL1
1
4
7
*/T
Type B
COL2
2
5
8
0
COL3
3
6
9
#
COL4/KT
SAVE
F
A
RD/P
COL5
ROW1
ROW2
ROW3
ROW4
ST
COL1
1
4
7
*
COL2
2
5
8
0
COL3
3
6
9
#
COL4/KT
SAVE
F
A
RD/P
COL5
P→T
ST
FUNCTIONAL BLOCK DIAGRAM
SDO HFO PM
XMUTE
COL1
COL2
COL3
COL4/KT
COL5
Keyboard
Output circuit
interface
(column)
Memory
(Melody)
XIN
XOUT
Row/Column
programming counter
latch
&
decoder
D/A
converter
DTMF
Oscillator
Timing/Control circuit
~
ROW1
ROW4
Keyboard
interface
(Row)
Input circuit
Pulse
generator
PO
VDD
VDD
HFI
* This specification are subject to be changed without notice.
HKS
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PIN DESCRIPTIONS
Symbol
ROW1~ROW4
COL1~COL3 and COL5
COL4/KT
XIN and XOUT
XMUTE
VDD and VSS
HFI
HFO
DTMF
HKS
PO
PM
SDO
NC
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.
* This specification are subject to be changed without notice.
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TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
FUNCTION DESCRIPTIONS
Dialing signal selection
The EM91240 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 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 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 EM91240 series to support 32 digits capacity buffer for second redial,
* This specification are subject to be changed without notice.
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TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
pager, Memory and other system applications.
Storing : EM91240 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 EM91240 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. After memory dialed out, the content of
LNB is keeping to current data.
Storing of 40 sets memory
Indirect (three-touch) operation
Off-hook (or turn on HF function), push ST, d1, d2, .. , dn, ST, n, n. The numbers d1, d2, .. , dn will be stored
into memory location “n n”. The “n n” expressed digital number from 01 to 40.
Dialing (after memory dialed out, the content of LNB is keeping to current data)
Indirect (three-touch) memory
• To select Pulse or Tone mode.
• Off-hook (or Turn on HF function), push A, n , n key. The numbers that are stored in indirect memory
location “n n” will be dialed out in Pulse or Tone mode as selection . The “n n” expressed digital number
from 01 to 40.
* This specification are subject to be changed without notice.
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TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
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 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.
10.1.1997
* This specification are subject to be changed without notice.
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EM91240 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
ready
1
0
start bits
bit 0
bit2
bit3
data bits
bit1
bit4
bit5
1
0
stop bits
SDO Keypad Encoded table:
♦ Digital key (b5,b4=0,0)
keypad
output
1
2
3
4
5
6
7
b3,b2,b1,b0 0001 0010 0011 0100 0101 0110 0111
Display
1
2
3
4
5
6
7
♦ Function key (b5,b4=1,0)
keypad
ST
output
b3,b2,b1,b0
0000
Display S
TORE
♦ Function key (b5,b4=1,1)
keypad
RD
output
b3,b2,b1,b0
1101
Display
RD
8
9
0
1000 1001 1010
8
9
0
HF
A
F
1010
Speaker
1110
A
1111
clear all display
“*”/T
#
1011 1100


P
*/”T”or P-T
1101
P
1110
Save
1110
SAVE
<Note> : The display of LCD panel “ST”,”HF”,”A”,”RD”,”Save” is corresponding to EM32116 with flag types.
* This specification are subject to be changed without notice.
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EM91240 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
∗ 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
ST
HF
A
F
RD
SAVE
bit5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
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
1
bit3
0
0
0
0
0
0
0
1
1
1
1
1
1
1
0
1
1
1
1
1
* This specification are subject to be changed without notice.
bit2
0
0
0
1
1
1
1
0
0
0
0
1
1
1
0
0
1
1
1
1
bit1
0
1
1
0
0
1
1
0
0
1
1
0
0
1
0
1
1
1
0
1
bit0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
0
0
0
1
1
0
Display
1
2
3
4
5
6
7
8
9
0


P
STORE
Speaker
Auto
clear all display
RD
SAVE
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TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
ABSOLUTE MAXIMUM RATINGS(Ambient temperature is 25 °C, all voltages referenced to VSS)
Items
Sym.
Power supply voltage
Input voltage range
VDD
VIN
Operating temperature
Storage temperature
Power consumption
TOPR
TSTO
PD
Rating
Unit
6.0 Vdc
VSS -0.3V ~ VDD+0.3V
0~ +50
-55 ~ 125
500
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)
Memory retention current
Standby current
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
Sym.
Pulse
Tone
Pulse
Tone
Pulse
Tone
HKS=1
HKS=0
HKS=1
HKS=0
Idd
Imrt
Istby
ViH
ViL
IoH
IoL
Min.
Typ.
Unit
2.0
2.0
-
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
IoH
-
-
Rhfi
IoH
IoL
IoH
IoL
2
200
0.2
0.2
200
10
400
-
* This specification are subject to be changed without notice.
Max.
±0.001 uA
50
800
-
KΩ
uA
mA
Condition
unload
unload
with pull up/down
resistor * 8
HKS=1,Vdd=1V
unload
with pull up/down
resistor * 8
Vo = 2.0 V
Vo = 0.5 V
Vo = Vdd
Vhfi = Vss
Vksn=Vss
Vksn=Vdd
Vo=2.0V
Vo=0.5V
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EM91240 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
ELECTRICAL CHARACTERISTIC
(Ambient temperature is 25°C, VDD=2.5V unless otherwise noted, all voltages referenced to Vss,Fosc=3.579545 MHz)
Parameter
○
○
○
○
Sym.
Min.
Typ.
Tdb
-
20
Flash time
Fkt
Tkt
Tp
Tpt
Tf
Flash pause time
Pulse rate
Tfp
PSR
Make/Break ratio
MBR
Inter-digit pause time
Tidp
DTMF pin: sink current
DTMF signal DC level
DTMF signal: ac level
pre-emphase
distortion
load resistance
IoL
Vdc
Vdtmf
Twist
THD
ZL
-0.2
0.5
142
1
5
96
88
81
96
88
81
3.8
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
Keyboard debounce time
Key tone signal:
frequency
present duration
Pause time and pulse to tone
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
Minimum tone duration
TD
Minimum inter-tone pause
Titp
SDO every bit time
Tbit
Max. Unit
-
Condition
ms
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 KΩ
KΩ
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
* This specification are subject to be changed without notice.
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
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EM91240 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
TIMING DIAGRAM
HKS
KEY IN
2
3
Tdb
KT
Tkt
XMUTE
PM
SDO
Tsdo
Tm
PO
Tidp
DTMF
T T T T
b m b m
Tidp
OSC.
Hi-impedance
Figure 1. Pulse mode operating timing
HKS
KEY IN
KT
2
3
Tdb
XMUTE
PM
SDO
PO
Td
Titp
Titp
DTMF
OSC.
Hi-impedance
Figure 2. DTMF mode operating timing
* This specification are subject to be changed without notice.
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EM91240 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
LNB=2,3
HKS
KEY IN
RD
Tdb
KT
Tkt
XMUTE
PM
SDO
Tm
PO
Tidp
DTMF
Tidp
T T T T
b m b m
OSC.
Hi-impedance
Figure 3. Pulse mode LNB redial timing
LNB=2,3
HKS
RD
KEY IN
Tdb
KT
XMUTE
PM
SDO
Tsdo
PO
Td
Titp
Td
Titp
DTMF
OSC.
Hi-impedance
Figure 4. DTMF mode LNB redial timing
* This specification are subject to be changed without notice.
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EM91240 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
HKS
2
KEY IN
RD/P
3
KT
Tp
XMUTE
PM
SDO
PO
Tidp
Tidp
DTMF
OSC.
Hi-impedance
Figure 5. Pause key operating timing
HKS
2
KEY IN
*/T
3
4
KT
XMUTE
Tpt
PM
SDO
PO
DTMF
OSC.
Hi-impedance
Figure 6. Pulse to Tone (P→T) operating timing
HKS
KEY IN
F
Tdb
KT
XMUTE
PM
SDO
PO
Tf
Tfp=300ms
DTMF
OSC.
Hi-impedance
Figure 7. Flash key operating timing
* This specification are subject to be changed without notice.
10.1.1997
13
EM91240 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
HKS
2
KEY IN
Tdb
KT
SDO
sT sT b0
0
1
0
L
b1 b2 b3 b4 b5 spT spT
1
Tbit
0 0
0 0
0
1
M
Hi-impedance
<Note>L=LSB,M=MSB, sT=START bit time, spT=STOP bit time
Figure 8. SDO operating timing
HKS
KEY IN
HF
HF
HF
HF
HF
HF
HF
XMUTE
HFO
PM
SDO
PO
DTMF
Hi-impedance
Figure 9. HF operating timing
* This specification are subject to be changed without notice.
10.1.1997
14
JUMPER
VDD
RING
JUMPER
560k
Q6
A92
2
5
8
0
4
7
*/T
560k
#
9
6
3
D5
1
D6
560k
560K
560K
560K
47K
R43
100K
R37
1N4148
560k
RD/P
A
F
ST
SAVE (P→T)
1
100K
R48
1N4148
JUMPER
R68 2
100K
R69
47K
2
1 D14
1N4148
JUMPER
2
A42
Q7
R35
2K2
1
3
2
3
OFFHOOK
10M
ONHOOK
1
220K
R47
1
3
SW1A
1
VDD
BRIDGE
2
2
1
2
.1U
C25
3
D7
1N4148
R52
220K
2K7
R49
1
2
Q4
C945
R36
470K
C24
.1u
21
D?
1
220uF
C31
19
R54
22
SDO
NC
20
PM
COL5
2
PO
COL4/KT
5V1
D13
C16
.001U
EM91240CK
BUZZER
3
ROW4
18
COL2
5
COL1
6
XIN
10p
7
TIP
8
COL3
4
ROW3
17
ROW2
16
ROW1
15
HKS
XOUT
14
VDD
XMUTE
13
10p
3.58MHz
9
1K5
R33
DTMF
VSS
12
HFO
HFI
10
* This specification are subject to be changed without notice.
11
C17
.01U
3
3
1
2
HF
50
Q18
1815
Q19
1815
6
SW1B
4
VCC
560K
CE
JP9
R55
470K
JUMPER
EM32100
HANDSET
HANDFREE
LCD DRIVER
HFO
HOOK
SDO
R67
1
2
5
1.5V
1D17
1D16
PM
1N4148
1N4148
2
2
3
NETWORK
SPEECH
2 TO 4 LINE
47K
R56
1
2
Q14
C945
CE
AMPLIFER
POWER
AUDIO
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
EM91240 SERIES
APPLICATION CIRCUIT
10.1.1997
15
SDO
2
VSS
VDD
HFO
HDO
HKS
3
200k
100k
1 C945
3 2
100k
1
1
220k
DIODE
DIODE
DIODE
2
2
2
47k
1µ
2
1
3
C945
220k
SEG5
SEG4
SEG3
SEG2
SEG1
COM1
COM2
COM3
TEST2
TEST1
F32H
NC
20p
EM32100
MS1
MS2
SD1
HKS
VDD
XIN
NC
XOUT
VSS
24/12
ENRTC
NC
* This specification are subject to be changed without notice.
20p
32768Hz
1
2
3
4
5
6
7
8
9
10
11
12
1
37
38
39
40
41
42
43
44
45
46
47
48
SEG6
SEG7
SEG8
SEG9
NC
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
36
35
34
33
32
31
30
29
28
27
26
25
8/10 Digits LCD Pannel
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
SEG23
SEG24
VEE
VN
VP
NC
VCC
24
23
22
21
20
19
18
17
16
15
14
13
1.5V
.1µ
.1µ
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
EM91240 SERIES
EM32100 Application Circuit :
Package type : QFP 48 pins or chip form provided
10.1.1997
16
* This specification are subject to be changed without notice.
10.1.1997
17
Package type : QFP 64 pins or chip form provided
LINE
2
Hook Switch detection circuit
SW HOOK
3
1
SDI
100k
.1µ
3
C945
1
470k
2
VDD
1
2
3
CALENDAR
OFF
ON
RTC
OFF
ON
1
2
3
HOUR
OFF
VDD
32768Kz
20p
LCD110
1
2
3
24/12
ENRTC
ENCLND
COM3
COM2
COM1
SEG31
SEG30
SEG29
SEG28
SEG27
SEG26
20p
EM32116
.1µF
.1µF
.1µF
TEST2
BATCKOF
BATLOW
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SRG6
SEG7
SEG8
SEG9
XOUT
XIN
VSS
VC2
VC1
V3
V2
VDD
HKS
SDI
MS2
MS1
F32HZ
TEST1
.1µF
SEG25
SEG24
SEG23
SEG22
SEG21
SEG20
SEG19
SEG18
SEG17
SEG16
SEG15
SEG14
SEG13
SEG12
SEG11
SEG10
ON
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
VDD
1.5V
EM32116 Application Circuit :
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
EM91240 SERIES
EM91240 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
PACKAGE INFORMATION
Example :
EM
(1)
91240 P
(2) (3)
(1) ELAN MICRO. pefix
(2) Type number
(3) Package code:
P→PDIP
K→Skinny
R→SDIP
18/20/28 Lead Plastic Package
E1
1
D
E
A
A1
L
C
B
e
B1
eB
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
* This specification are subject to be changed without notice.
28 PDIP
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
INCHES
MIN. MAX.
.250
.015
.014
.022
.040
.070
.008
.015
1.400 1.490
.600
.625
.520
.580
.090
.110
.700
.115
.200
10.1.1997
18
EM91240 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
22/24 Lead Plastic Package-Skinny
E1
1
D
E
A
A1
L
C
B
e
B1
eB
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
24 PDIP (skinny)
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
* This specification are subject to be changed without notice.
DIM
A
A1
B
B1
C
D
E
E1
e
eB
L
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
10.1.1997
19
EM91240 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
42 SDIP Package
E1
D
E
A A2
C
A1
L
D1
B
e
B1
eB
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
* This specification are subject to be changed without notice.
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
10.1.1997
20