Datasheet EM91410DK, EM91410CK, EM91410BP, EM91410AP Datasheet (ELAN)

GENERAL DESCRIPTION

The EM91410 is a series of tone/pulse switchable dialers that is composed of T/P dialer and T/P dialer with
10 set memories. The EM91410 provides 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.

•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.

EM91410 SERIES

EM91410 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

ORDERING INFORMATION

Versions list and function outline

VERSION LNB KT HOLD(music) LOCK HF SDO(LCD) PDP
EM91410A √√√ √
EM91410B √√√ √√
EM91410C √√√ √√√
EM91410D √√√ √√√√
Note : PDP = Pocket Dialer Prevented

* This specification are subject to be changed without notice.

10.1.1997

1

EM91410

2

4

6

9

2

2

4

6

9

C

2

I

G

2

4

6

9

2

I

2

4

6

9

C

2

I

Pin Assignment

EM91410 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND DUAL-TONE MELODY GENERATOR

COL5

COL4/KT

COL3
COL
COL1

XIN

XOUT

XMUTE

VSS

N

COL5

COL4/KT

COL3
COL
COL1

XIN

XOUT

XMUTE

VSS

HF

EM91410AP

1

3

5

7
8

18
17
16
15
14
13
12
11
10

EM91410CK

1

3

5

7
8

10
11

22
21
20
19
18
17
16
15
14
13
12

HDO
PO
ROW4
ROW3
ROW2
ROW1
HKS
VDD
DTMF

SDO
HDO
PO
ROW4
ROW3
ROW2
ROW1
HKS
VDD
DTMF
HFO

COL5

COL4/KT

COL3
COL
COL1

XIN

XOUT

XMUTE

VSS

HF

N

COL5

COL4/KT

COL3
COL
COL1

XIN

XOUT

XMUTE

VSS

HF

DRIN

EM91410BP

1

3

5

7
8

10

20
19
18
17
16
15
14
13
12
11

EM91410DK

1

3

5

7
8

10
11
12

24
23
22
21
20
19
18
17
16
15
14
13

HDO
PO
ROW4
ROW3
ROW2
ROW1
HKS
VDD
DTMF
HFO

SDO
HDO
PO
ROW4
ROW3
ROW2
ROW1
HKS
VDD
DTMF
HFO
RMUTE

Keyboard Arrangement

COL1

ROW1
ROW2
ROW3
ROW4

* This specification are subject to be changed without notice.

1
4
7

*/T

COL2

2
5
8
0

COL3

3
6
9
#

COL4/KT

HD

F

A

RD/P

COL5

ST

10.1.1997

2

FUNCTIONAL BLOCK DIAGRAM

COL1
COL2
COL3

COL4/KT

COL5

XIN

XOUT

Keyboard

interface

(column)

Oscillator

SDO

EM91410 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND DUAL-TONE MELODY GENERATOR

RMUTE

HFO

HDO

Output circuit

Memory

(Melody)

XMUTE

decoder

Row/Column

programming counter

latch

&

converter

D/A

DTMF

VDD

Timing/Control circuit

Input circuit

DRING

HKS HFI

generator

VDD

Pulse

PO

ROW1
ROW2
ROW3
ROW4

Keyboard

interface

(Row)

PIN DESCRIPTIONS

Symbol Function

ROW1~ROW4 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. 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 and hold function .
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) and music signals output pin. Normally,

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.

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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EM91410 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND DUAL-TONE MELODY GENERATOR

Symbol Function

HKS 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.

PO 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.

HDO 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 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.

DRING 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 .

RMUTE 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 .

NC No connection.

* This specification are subject to be changed without notice.

10.1.1997

4

FUNCTION DESCRIPTIONS

Dialing signal selection

The EM91410 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. Lock control method

ROW3 ROW4 Tf (ms) COL1 Control method

NR NR 600 R-Vdd key lock

NR R-Vss 100 NR none lock
R-Vss NR 80 R-Vss password lock
R-Vss R-Vss 300

EM91410 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND DUAL-TONE MELODY GENERATOR

e. Lock number

COL2 COL3 Lock number

NR NR none

NR R-Vss 0
R-Vss NR 9
R-Vss R-Vss 0.9

Normal dialing

Directly keying digital key on keyboard which number can be dialing output and stored in LNB memory
automatically. Operating procedure described as follow :

• To select Pulse or Tone mode.

• Off-hook or turn on HF function.

• Keying d1, d2, .. , dn. The “d” expressed digital keypad that included 1~9, *, 0, #, P, and 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

5

EM91410 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 EM91410 incorporated several sets repertory memory and each one can store number up to 16 digits.
These memories were designed to 10 sets types. 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 10 sets memory

Indirect (two-touch) operation

Off-hook (or turn on HF function), push
into memory location “n”. The “n” expressed digital key from 0 to 9.

(ST, d1, d2, .. , dn, ST, n.) The numbers d1, d2, .. , dn will be stored

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

Indirect (two-touch) of 10 sets 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

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

out as following sequence:

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

Pulse to Tone (*/T) key operation

The Pulse to Tone (*/T) key is designed to support toll dialing (long distance call) or PABX system operation.
The “*/T” key can be stored in memory and it will occupy one digital position.

• To select Pulse mode.

• Off-hook (or turn on HF function), push d1, d2, .. , dn, */T, k1, k2, .. , kn. These numbers will be dialed out
as following sequence:

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

(pulse mode) (tone mode)

* This specification are subject to be changed without notice.

10.1.1997

6

EM91410 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND DUAL-TONE MELODY GENERATOR

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
EM91410 series. To prevent the unavoidable long distance call, then EM91410 inhibits the key entry during
Tdly.

* This specification are subject to be changed without notice.

10.1.1997

7

Operating flow chart

HF

EM91410 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND DUAL-TONE MELODY GENERATOR

HKS=Lo

1

On-hook State

HF

HKS=Hi

2

Off-hook State

HD

5

Off-hook

HD

4

On-hook

Hand-free State

HD

Hold-line State

HF

6

On-hook

HKS=Hi

HKS=Lo

3

Off-hook

Hand-free State

HD

HKS=Hi

HKS=Lo

HF

HF

HF

Hold-line State

<Note> : HF = Handfree

HD = Hold

Truth table

Operating state Input/Output pin level

HKS PO XMUTE HFO HDO

(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 H L
(3) On-hook, HF line H F F H L
(4) Off-hook, HD line L F L L H
(5) On-hook, HD line H F L L H

Note : F=floating (high impedance); H=logic “High”; L=logic “Low” level.

HD

Music on Hold

EM91410 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

8

EM91410 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND DUAL-TONE MELODY GENERATOR

1

ready

0

start bits

1 bit 0

bit1

bit2 bit3 bit4 bit5
data bits

0

stop bits

SDO Keypad Encoded table:

♦ Digital key (b5,b4=0,0)

keypad 1 2 3 4 56789 0“*”/T # 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” 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

9

EM91410 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND DUAL-TONE MELODY GENERATOR

LOCK function

The EM91410 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 : ([

number “#” will be inhibited when the current password is not equal to 000,and

# , ps1 , ps2 , ps3 ] + telephone number.) The numbers in the [ ] symbol could be omitted. The

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

10

EM91410 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 ).

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 & DRING ViH 0.8Vdd - Vdd V

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

& SDO pins: sink current
PO, XMUTE, RMUTE and SDO IoH - - ±0.001 uA Vo = Vdd
pins: leakage current
HFI pin input resistance Rhfi - 200 - KΩ Vhfi = Vss
DRING pin input resistance Rdring - 100 - KΩ Vdeing=Vss
Keyboard scanning pins IoH 2 10 50 uA Vksn=Vss
output current (except COL4/KT) IoL 200 400 800 V ksn=Vdd
COL4/KTsource 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

11

EM91410 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND DUAL-TONE MELODY GENERATOR

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

○○○○○○○○○○○○○○○○○○○

duration Tkt - 30 - ms
Pause time Tp - 3.6 - sec.
Pulse to Tone waiting time Tpt - 3.6 - sec.
Flash time Tf - 600 - Row3B, Row4B=NR, NR

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 Tp 96 98 100
Minimum inter-tone pause Titp 96 98 100 ms Memory dialing
Melody output signal:
main tone ac level (-23.3) (dBm)

Sub-tone (-25.3) (dBm)

HD key release hold function Thdrdb - 280 - ms
debounce time
SDO every bit time Tbit 3.8 3.9 4.1 ms
Off-Hook delay time Tdly - 300 - ms

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

DD

- 100 - ms Row3B, Row4B=NR, R-Vss

- 80 - Row3B,Row4B=R-Vss, NR

- 300 - Row3B,Row4B=R-Vss,R-Vss

- 10 - Row1 = R-Vss

- 33:66 - Row2 = R-Vss

- 500 - PSR = 20 pps

Vmtac 48 53 58 mVms Vdd =2.0V ~ 5.5V

○○○○○○○○○○○○○○○○○○○

○○○○○○○○○○○○○○○○○○○

Vstac 37 42 47 mVms Vdd =2.0V ~ 5.5V

* This specification are subject to be changed without notice.

10.1.1997

12

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND DUAL-TONE MELODY GENERATOR

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

EM91410 SERIES

* This specification are subject to be changed without notice.

10.1.1997

13

TIMING DIAGRAM

HKS

EM91410 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND DUAL-TONE MELODY GENERATOR

KEY IN

KT

XMUTE

HDO

SDO

PO

DTMF

OSC.

Tdb

2

Tkt

Tm

Tidp T

Tdly

T

TbT

m

b

m

Figure 1. Pulse mode operating timing

3

Tidp

Hi-impedance

HKS

KEY IN

KT

XMUTE

HDO

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

14

LNB=2,3

HKS

EM91410 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND DUAL-TONE MELODY GENERATOR

KEY IN

KT

XMUTE

HDO
SDO

PO

DTMF

OSC.

LNB=2,3

Tdb

Tdly

RD/P

Tkt

Tm

Tidp

TbT

TbT

m

m

Tidp

Figure 3. Pulse mode LNB redial timing

Hi-impedance

HKS

KEY IN

Tdb

KT

XMUTE

HDO
SDO

PO

DTMF

OSC.

RD/P

Tkt

Td

Titp

Tdly

Figure 4. DTMF mode LNB redial timing

* This specification are subject to be changed without notice.

Td

Titp

Hi-impedance

10.1.1997

15

HKS

KEY IN

KT

EM91410 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND DUAL-TONE MELODY GENERATOR

2

RD/P 3

XMUTE

HDO

SDO

PO

DTMF

OSC.

HKS

KEY IN

XMUTE

HDO

SDO

KT

PO

Tp

Tidp

Figure 5. Pause key operating timing

2 */T

34

Tpt

Tidp

Hi-impedance

DTMF

OSC.

HKS

KEY IN

KT

XMUTE

HDO

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

16

HKS

EM91410 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND DUAL-TONE MELODY GENERATOR

KEY IN

Tdb

KT

SDO

b1

b0

sT

sT

0

0

1

1

L

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

Figure 8. SDO operating timing

HKS

HD

KEY IN

HFO

HDO

XMUTE

SDO

HF

HF

HD

HD HD HD HD @

2

b2 b3 b4

Tbit
0000

b5 spT

0

M

HF

spT

1

Hi-impedance

280

ms

Thdrdb

PO

MELODY

@ : It can be triggled by extension telephone set for hold function release

Figure 9. HF and HD operating timing

HFI

or

HKS

KEY

KT

OSC.

HF

Tdly

5

0

"0" digit dialing time

Hi-impedance

Hi-impedance

Figure 10. Off-Hook delay time

* This specification are subject to be changed without notice.

10.1.1997

17

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)

EM91410 SERIES

RING

DRING

HKS

RMUTE

Figure 12. Timing of making an outgoing call

* This specification are subject to be changed without notice.

10.1.1997

18

APPLICATION CIRCUIT

EM91410 series Application circuit

CE

EM91410 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND DUAL-TONE MELODY GENERATOR

AUDIO

POWER

AMPLIFER

Q14

C945

1

2

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

100K

3

1

D7

R56

1N4148

EM32100

Q18

2

3

R36

470K

1N4148

Q6

R47

R52

A92

3

D17
1 2

1815

2

47K

1N4148

EM32100

JP9

HFO

2

1

220K

D14

1

220K

BRIDGE

D18
1 2

HDO

Q19

1815

3

C31

2

1N4148

1N4148

JP10

1

D13

C24

Q4

C945

3

2

220uF

1

R35

R37

C17

C25

R67

.1u

2K2

50

.01U

R69

5V1

100K

.1U

47K

SPEECH

NETWORK

2 TO 4 LINE

ROW1

Q10

C945

1

2

3

Q9

C945

2

R46

10K

3

R44

HDO

R65

220K

47U

C23

R57

R43

47K

1 2

1 2

D19

D5

1N4148

R68

100K

2

A42

Q7

1

3

27V

BRIDGE

C21
1

22K

.1uF

R45

47K

1N4148

VDD

47K

C22

COL4/KT

1uF

22U/50V

4K7

1.2M

560K

560K

DRING

JUMPER

CE

13
14
15
16
17
18
19
20
21
22
23
24

560K

VDD

U?

4

1

VCC

HFO

VDD

HKS

PO

HDO

SDO

560K

1U

PC817

1.5V

LCD DRIVER

SDO

RMUTE

DTMF

ROW1
ROW2
ROW3

EM91410DK

ROW4

560k

JUMPER

JUMPER

3

2

DRING

12

HFI

11

VSS

10

XMUTE

9

XOUT

8

XIN

7

COL1

6

COL2

5

COL3

4

COL4/KT

3

COL5

2

NC

1

HD

3

2

1

F

6

5

4

DRING

HF

10p 10p

3.58MHz

BZ?

BUZZER

ST

RD/P

R?

9

#

8

0

7

*/T

560k

R?

560k

R?

560k

470

TIP

.1U

RING

* This specification are subject to be changed without notice.

10.1.1997

19

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

EM91410 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND DUAL-TONE MELODY GENERATOR

Package type : QFP 48 pins or chip form provided

* This specification are subject to be changed without notice.

10.1.1997

20

EM91410 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

AND DUAL-TONE MELODY GENERATOR

EM32116 Application Circuit :

* This specification are subject to be changed without notice.

Package type : QFP 64 pins or chip form provided

10.1.1997

21

PACKAGE INFORMATION

Example :

EM 914XX P
(1) (2) (3)

18/20/28 Lead Plastic Package

EM91410 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND DUAL-TONE MELODY GENERATOR

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

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

22

22/24 Lead Plastic Package-Skinny

EM91410 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND DUAL-TONE MELODY GENERATOR

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

23

42 SDIP Package

EM91410 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND DUAL-TONE MELODY GENERATOR

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

24