EMC EM91415A

EM91415
SERIES
EM91415
SERIES
TONE/PULSE
SWITCHABLE
DIALER
WITH
LCD
INTERFACE
TONE/PULSE
SWITCHABLE
DIALER
WITH
LCD
INTERFACE
AND DUAL-TONE
MELODY
GENERATOR
AND DUAL-TONE
MELODY
GENERATOR
GENERAL DESCRIPTION
The EM91415 is a series of tone/pulse switchable dialers that is composed of T/P dialer and T/P dialer with
13 set memories. The EM91415 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, melody generator, ring detector and
SDO (Serial Data Output) functions are provided in advance version. Melody generator will output dual-tone
music in line hold duration. 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 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, lock dialing functions.
• SDO function supports LCD driver and voice synthesizer to indicate dialing numbers.
• Line hold function is designed for stopping conversation temporality.
• Melody generator provides music on hold function.
• Lock function provides conventionality key lock and password lock operations.
• Ring detector is designed to prevent illegal dialing from pocket dialer.
• 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
EM91415A
√
√
EM91415B
√
√
EM91415C
√
√
EM91415D
√
√
Note : PDP = Pocket Dialer Prevented
HOLD(music)
√
√
√
√
* This specification are subject to be changed without notice.
LOCK
√
√
√
√
HF
SDO(LCD)
PDP
√
√
√
√
√
√
10.1.1997
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EM91415 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
EM91415
Pin Assignment
COL5
COL4/KT
COL3
COL2
COL1
XIN
XOUT
XMUTE
VSS
EM91415AP
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
EM91415BP
COL5
COL4/KT
COL3
COL2
COL1
XIN
XOUT
XMUTE
VSS
HFI
HDO
PO
ROW4
ROW3
ROW2
ROW1
HKS
VDD
DTMF
1
2
3
4
5
6
7
8
9
10
EM91415CK
ROW6
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
20
19
18
17
16
15
14
13
12
11
HDO
PO
ROW4
ROW3
ROW2
ROW1
HKS
VDD
DTMF
HFO
EM91415DK
ROW6
ROW5/SDO
COL5
HDO
COL4/KT
PO
COL3
ROW4
COL2
ROW3
COL1
ROW2
XIN
ROW1
XOUT
HKS
XMUTE
VDD
VSS
DTMF
HFI
HFO
DRING
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
ROW5/SDO
HDO
PO
ROW4
ROW3
ROW2
ROW1
HKS
VDD
DTMF
HFO
RMUTE
Keyboard Arrangement
ROW1
ROW2
ROW3
ROW4
ROW5/SDO
ROW6
COL1
1
4
7
*/T
M1
M6
COL2
2
5
8
0
M2
M7
COL3
3
6
9
#
M3
M8
COL4/KT
HD
F
A
RD/P
M4
M9
COL5
EM1
EM2
EM3
ST
M5
M10
ROW5/SDO : Option by COL5
@ When ROW5 is selected by R option (COL5), there are 13 sets one touch memory version in EM91415C/D
provided.
* This specification are subject to be changed without notice.
10.1.1997
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EM91415 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
FUNCTIONAL BLOCK DIAGRAM
RMUTE
SDO HFO HDO
COL1
COL2
COL3
COL4/KT
COL5
Keyboard
Row/Column
programming counter
Output circuit
interface
(column)
Memory
(Melody)
XIN
XOUT
XMUTE
latch
&
decoder
D/A
converter
DTMF
Oscillator
Timing/Control circuit
~
ROW1
ROW6
Keyboard
interface
(Row)
Pulse
generator
Input circuit
PO
VDD
VDD
HFI
HKS
DRING
PIN DESCRIPTIONS
Symbol
ROW1~ROW6
COL1~COL3 and COL5
COL4/KT
XIN and XOUT
XMUTE
VDD and VSS
HFI
HFO
DTMF
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. 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 and hold function .
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) 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. Beside this, in the line hold
duration, this pin will issue dual-tone music for telephone line.
* This specification are subject to be changed without notice.
10.1.1997
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EM91415 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
Symbol
HKS
PO
HDO
SDO
DRING
RMUTE
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 which is internal pull up (built-in 100 Kohms resistor).
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 .
* This specification are subject to be changed without notice.
10.1.1997
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EM91415 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
FUNCTION DESCRIPTIONS
Dialing signal selection
The EM91415 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
Tf (ms)
600
100
80
300
Lock number
none
0
9
0.9
d. Lock control method
COL1
Control method
R-Vdd
key lock
NR
none lock
R-Vss
password lock
f. ROW5/SDO pin functions
COL5
ROW5 or SDO Pin
NR
SDO
R-Vss
ROW5
(Note): If select SDO function, the memory type is
(1T*3+2T*10)
If select ROW function, the memory type is
(1T*3+2T*10) and (1T*13)
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.
* This specification are subject to be changed without notice.
10.1.1997
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EM91415 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
Redialing:
After normal dialing, directly keying F key (or On-Off hook once) and keying RD key on keyboard. The
numbers that are stored into LNB memory will be dialed output.
Repertory memory
The EM91415 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 13 sets memory types
Direct (one-touch) operation
Off-hook (or turn on HF function), push (ST, d1, d2, .. , dn [ST], EMn or M1~M10 (ROW5 optioned).) The
numbers d1, d2, .. , dn will be stored into memory location “EMn” or Mn. The “EMn” expressed emergency
memory EM1 to EM3. The Mn expressed memory M1~M10.
Indirect (two-touch) operation
Off-hook (or turn on HF function), push (ST, d1, d2, .. , dn, ST, n.) The numbers d1, d2, .. , dn will be stored
into memory location “n”. The “n” expressed digital key from 0 to 9.
Dialing (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
number from 1~10 decided by dialers’ memory sets.
Indirect (two-touch) memory operation
• To select Pulse or Tone mode.
• Off-hook (or Turn on HF function), push A, n key. The numbers that are stored in indirect memory location
“n” will be dialed out in Pulse or Tone mode as selection. The “n” expressed digital key from 0 to 9.
Pause (P) key operation
The Pause (P) key is designed to support pause operation in dialing duration. “P” key can be stored in memory
and it will occupy one digital position.
• To select Pulse or Tone mode.
• Off-hook (or turn on HF function), push (d1, d2, .. , dn, RD/P, k1, k2, .. , kn.) These numbers will be dialed
out as following sequence:
d1, d2, .. , dn, Tp, k1, k2, .. , kn.
* This specification are subject to be changed without notice.
10.1.1997
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EM91415 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
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 280 ms.
• Turn on Handfree (HF) function. (HFO pin switched to “High”)
Special Note:
A 300 ms delay time (Tdly) at the first Off-Hook or turn on Handfree that is a special designed to avoid a rapid
key entry (dummy number ) in this time duration ,and a long distance call number follows. For example,
Off-Hook , “3” ,............ , “0” ,1,2,3......
Dummy key
Lock number key
The dummy number “3” is not detected by the centered office or PABX ,but the following numbers “0” ,1,2,3...
long distance call can be dialed out normally since the leading number “3” is not the Lock-number defined in
EM91415 series. To prevent the unavoidable long distance call, then EM91415 inhibits the key entry during
Tdly.
* This specification are subject to be changed without notice.
10.1.1997
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EM91415 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
Operating flow chart
HKS=Lo
1
On-hook State
HF
HKS=Hi
HF
4
On-hook
Hand-free State
HKS=Hi
HD
HF
2
HKS=Lo
Off-hook State
3
Off-hook
Hand-free State
HF
HD
HF
HD
HF
HD
6
On-hook
Hold-line State
HD
HKS=Hi
5
Off-hook
Hold-line State
HKS=Lo
<Note> : HF = Handfree
HD = Hold
Truth table
Operating state
Input/Output pin level
HKS
PO
XMUTE
HFO
(0) On-hook, idle state
H
F
F
L
(1) Off-hook line
L
F
F
L
(2) Off-hook, HF line
L
F
F
H
(3) On-hook, HF line
H
F
F
H
(4) Off-hook, HD line
L
F
L
L
(5) On-hook, HD line
H
F
L
L
Note : F=floating (high impedance); H=logic “High”; L=logic “Low” level.
HDO
L
L
L
L
H
H
Music on Hold
EM91415 series built-in a melody generator to generate dual-tone music on DTMF output pin. The music is
designed for telephone line at line holding.
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.
* This specification are subject to be changed without notice.
10.1.1997
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EM91415 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
ready
0
start bits
1
bit 0
bit2
bit3
data bits
bit1
bit4
bit5
1
0
stop bits
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
0
“*”/T
1010 1011
0

#
P
*/”T”
1100 1101 1110

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
1
2
3
4
5
6
7
8
9
0
“*”/T
#
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
* This specification are subject to be changed without notice.
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
10.1.1997
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EM91415 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
LOCK function
The EM91415 series provide the LOCK function to inhibit toll dialing operation. Connecting a resistor on COL1
pin to VSS can select different LOCK control method that is conventional key lock or password lock. Also the
lock number that can be selected by connecting the resistors on COL2 or COL3 pin. After power on reset, the
password is fixed to 000 automatically. The lock function is disabled when the password is equal to 000 .
How to setup password
• Set LOCK function to password control mode. (Connects a resistor on COL1 pin to VSS)
• Off hook (or turn on HF function)
• Push : # , # , ops1 , ops2 , ops3 , nps1 , nps2 , nps3 , # . If the ops1~ops3 are the same with current password,
then nps1~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.
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.
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.
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.
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
* This specification are subject to be changed without notice.
10.1.1997
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EM91415 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
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.
10.1.1997
11
EM91415 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
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 & DRING
pins: input voltage
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
DRING 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
IoH
Rhfi
Rdring
IoH
IoL
IoH
IoL
* This specification are subject to be changed without notice.
Min.
Typ.
Max. 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
-
-
2
200
0.2
0.2
200
100
10
400
-
±0.001 uA
50
800
-
KΩ
KΩ
uA
V
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
Vdeing=Vss
Vksn=Vss
ksn=Vdd
Vo=2.0V
Vo=0.5V
10.1.1997
12
EM91415 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
ELECTRICAL CHARACTERISTIC
(Ambient temperature is 25°C, 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.
Min.
Typ.
Tdb
-
20
Fkt
Tkt
Tp
Tpt
Tf
-0.2
0.5
142
1
5
96
96
600
30
3.6
3.6
600
100
80
300
20
10
40:60
33:66
800
500
160
2
-30
98
98
Pulse rate
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
Minimum tone duration
Minimum inter-tone pause
Melody output signal:
main tone ac level
IoL
Vdc
Vdtmf
Twist
THD
ZL
Tp
Titp
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
-
Vstac
Thdrdb
37
-
(-23.3)
53
(-25.3)
42
280
Tbit
Tdly
3.8
-
3.9
300
○
○
Vmtac
Sub-tone
HD key release hold function
debounce time
SDO every bit time
Off-Hook delay time
Max. Unit
○
○
○
48
○
○
○
○
* This specification are subject to be changed without notice.
○
○
○
○
○
○
○
ms
Hz
ms
sec.
sec.
Row3B, Row4B=NR, NR
ms
Row3B, Row4B=NR, R-Vss
Row3B,Row4B=R-Vss, NR
Row3B,Row4B=R-Vss,R-Vss
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
100
ms
Memory dialing
○
○
Condition
○
○
○
○
○
58
○
○
○
○
47
4.1
-
○
(dBm)
mVms Vdd =2.0V ~ 5.5V
(dBm)
mVms Vdd =2.0V ~ 5.5V
ms
○
○
○
○
○
○
○
○
○
○
ms
ms
10.1.1997
13
EM91415 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
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
10.1.1997
14
EM91415 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
TIMING DIAGRAM
HKS
2
KEY IN
3
Tdb
KT
Tkt
XMUTE
HDO
SDO
Tm
PO
Tidp
DTMF
T T T T
b m b m
Tidp
OSC.
Tdly
Hi-impedance
Figure 1. Pulse mode operating timing
HKS
KEY IN
KT
2
3
Tdb
XMUTE
HDO
SDO
PO
Td
Titp
Titp
DTMF
OSC.
Hi-impedance
Figure 2. DTMF mode operating timing
* This specification are subject to be changed without notice.
10.1.1997
15
EM91415 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
LNB=2,3
HKS
KEY IN
RD/P
Tdb
KT
Tkt
XMUTE
HDO
SDO
Tm
PO
Tidp
DTMF
Tidp
T T T T
b m b m
OSC.
Tdly
Hi-impedance
Figure 3. Pulse mode LNB redial timing
LNB=2,3
HKS
RD/P
KEY IN
Tdb
KT
Tkt
XMUTE
HDO
SDO
PO
Td
Titp
Td
Titp
DTMF
OSC.
Tdly
Hi-impedance
Figure 4. DTMF mode LNB redial timing
* This specification are subject to be changed without notice.
10.1.1997
16
EM91415 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
HKS
2
KEY IN
RD/P
3
KT
XMUTE
Tp
HDO
SDO
PO
Tidp
Tidp
DTMF
OSC.
Hi-impedance
Figure 5. Pause key operating timing
HKS
2
KEY IN
*/T
3
4
KT
XMUTE
Tpt
HDO
SDO
PO
DTMF
OSC.
Hi-impedance
Figure 6. Pulse to Tone (P→T) operating timing
HKS
KEY IN
F
Tdb
KT
XMUTE
HDO
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
17
EM91415 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
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
HD
HF
KEY IN
HF
HD
HD
HD
HF
HD
HD @
280
ms
HFO
Thdrdb
HDO
XMUTE
SDO
PO
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
HF
5
KEY
0
KT
Tdly
OSC.
"0" digit dialing time
Hi-impedance
Figure 10. Off-Hook delay time
* This specification are subject to be changed without notice.
10.1.1997
18
EM91415 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
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.
10.1.1997
19
RING
.1U
470
4
3
1
2
22U/50V
BRIDGE
PC817
4K7
27V
1U
VDD
220K
R47
1
VDD
1
4
7
*/T
M1
M6
560k
2
5
8
0
M2
M7
D6
R43
100K
R37
1N4148
560k
560K
560K
560K
560k
EM1
EM2
EM3
ST
M5
M10
1N4148
HD
F
A
RD/P
M4
M9
560k
3
6
9
#
M3
M8
560k
1
100K
R48
1
47K
1N4148
D19
2
1
D5
JUMPER
R68 2
100K
R69
47K
JUMPER
DRING
2
A42
Q7
2
1 D14
1N4148
OFFHOOK
10M
ONHOOK
Q6
A92
R35
2K2
1
3
2
3
3
SW1A
1
1.2M
BRIDGE
2
1
2K7
R49
47K
2
.1U
C25
3
D7
1N4148
R52
220K
R57
2
1
2
Q4
C945
R36
470K
.1u
C24
23
R54
22
TIP
24
SDO/ROW5
ROW6
1
HDO
COL5
2
PO
220uF
C31
20
BUZZER
5V1
D13
C16
.001U
EM91415DK
ROW3
21
4
COL4/KT
3
ROW4
COL3
19
COL1
10p
3.58MHz
6
XIN
7
XOUT
8
COL2
5
ROW2
17
HKS
18
ROW1
16
VDD
XMUTE
15
10p
9
1K5
R33
C17
.01U
3
13
RMUTE
DRING
14
DTMF
VSS
10
HFO
HFI
11
* This specification are subject to be changed without notice.
12
1
2
47U
C23
50
Q18
1815
HF
DRING
3
1
2
SDO
R45
47K
R67
Q19
1815
5
VCC
560K
EM32100
CE
C22
1uF
10K
3
R46
JP10
JUMPER
.1uF
Q9
C945
1 C21
2
JP9 EM32100
R55
470K
HANDSET
HANDFREE
LCD DRIVER
22K
R44
HDO
R65
220K
HDO
HFO
HOOK
6
SW1B
4
3
1N4148
2
2
1.5V
1
2
47K
R56
3
NETWORK
SPEECH
2 TO 4 LINE
COL4/KT
Q10
C945
ROW1
1N4148
1N4148
1 D18
2
1D17
1D16
1
2
Q14
C945
POWER
AUDIO
AMPLIFER
CE
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
EM91415 SERIES
APPLICATION CIRCUIT
EM91415 Application circuit
10.1.1997
20
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
AND DUAL-TONE MELODY GENERATOR
EM91415 SERIES
EM32100 Application Circuit :
Package type : QFP 48 pins or chip form provided
10.1.1997
21
* This specification are subject to be changed without notice.
10.1.1997
22
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
AND DUAL-TONE MELODY GENERATOR
EM91415 SERIES
EM91415 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
PACKAGE INFORMATION
Example :
EM
(1)
914XX 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
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
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
23
EM91415 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
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
24
EM91415 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
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
25