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EM91465 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND I.P.P. DETECT FUNCTION

* This specification are subject to be changed without notice.

9.24.1998

GENERAL DESCRIPTION

The EM91465 is a series of tone/pulse switchable dialers that is composed of T/P dialer and T/P dialer with
13 set memories. The EM91465 provide modern LCD driver's series data output port, which can display modern
function operating icons. The EM91465 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, ring detector and SDO (Serial Data
Output) functions are provided in advance version. 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 and
modern function operating icons can be displayed on LCD screen with LCD driver ( EM32100 or EM32117
). The EM91465 has a special I.P.P. detect function (Illegal Parallel Phone Detect) can prevent the illegal connect
external Phone. The I.P.P. will detect the illegal user. When illegal user pickup phone, the function will alarm
and send the alarm signal to the telephone line to interfer the illegal dialing.

FEATURES

· I.P.P. detect function prevents the illegal connect external phone.
· SDO function supports LCD driver and voice synthesizer to indicate dialing numbers and function operat

ing icons.

· Lock function provides conventionality key lock and password lock operations.
· Ring detector is designed to prevent illegal dialing from pocket dialer.
· Line hold function is designed for stopping conversation temporality.
· 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.

· 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

HOLD

I.P.P.

LOCK

SDO(LCD)

PDP

EM91465A

EM91465B

EM91465C

EM91465D

Note : PDP = Pocket Dialer Prevented

: I.P.P. detect = Illegal Parallel Phone Detect.

EM91465 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND I.P.P. DETECT FUNCTION

* This specification are subject to be changed without notice.

9.24.1998

EM91465

Pin Assignment

COL5

COL4/KT

COL3

COL2

COL1

XIN

XOUT

XMUTE

VSS

HDO

ROW4

ROW3

ROW2

ROW1

HKS

VDD

DTMF

EM91465AP

COL5

COL4/KT

COL3

COL2

COL1

XIN

XOUT

XMUTE

VSS

HFI

HDO

ROW4

ROW3

ROW2

ROW1

HKS

VDD

DTMF

HFO

EM91465BP

ROW6

COL5

COL4/KT

COL3

COL2

COL1

XIN

XOUT

XMUTE

VSS

HFI

ROW5/SDO

HDO

ROW4

ROW3

ROW2

ROW1

HKS

VDD

DTMF

HFO

EM91465CK

ROW6

COL5

COL4/KT

COL3

COL2

COL1

XIN

XOUT

XMUTE

VSS

HFI

DRING

ROW5/SDO

HDO

ROW4

ROW3

ROW2

ROW1

HKS

VDD

DTMF

HFO

RMUTE

EM91465DK

ROW1

ROW2

ROW3

ROW4

ROW5/SDO

ROW6

COL1

*/T

COL2

COL3

COL4/KT

RD/P

COL5

EM1

EM2

EM3

M10

Keyboard Arrangement

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

EM91465C/D provided.

ROW5/SDO : Option by COL5

EM91465 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND I.P.P. DETECT FUNCTION

* This specification are subject to be changed without notice.

9.24.1998

FUNCTIONAL BLOCK DIAGRAM

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. 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

Input/Output structure pin. The output is a open drain structure. Input is schmitt trigger

structure. This pin will be input pin during ON-HOOK status for illegal parallel phone
detect input pin and will be output pin in OFF-HOOK condition for control speech
network .

and V

Positive and negative power supply input pins. Recommended operating voltage from
2.0Vdc to 5.5Vdc.

HFI

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).

HFO

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.

DTMF

The DTMF (Dual Tone Multi-Frequency) signal 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.

COL1

COL2

COL3

COL4/KT

COL5

XIN

XOUT

ROW1

ROW6

HFO HDO

XMUTE

Keyboard

interface

(column)

Oscillator

Keyboard

interface

(Row)

Output circuit

Memory

Timing/Control circuit

Input circuit

Pulse

generator

latch

decoder

D/A

converter

Row/Column

programming counter

DTMF

HKS

HFI

VDD

DRING

RMUTE

SDO

I/O circuit

EM91465 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND I.P.P. DETECT FUNCTION

* This specification are subject to be changed without notice.

9.24.1998

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.

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.
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 .

EM91465 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND I.P.P. DETECT FUNCTION

* This specification are subject to be changed without notice.

9.24.1998

FUNCTION DESCRIPTIONS

Dialing signal selection

The EM91465 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

40:60

Tone

R-Vss

33:66

R-Vss

10 PPS

c. Flash time

d. Lock control method

ROW3

ROW4

Tf (ms)

COL1

Control method

600

R-Vdd

key lock

R-Vss

100

none lock

R-Vss

password lock

R-Vss

300

e. Lock number

f. ROW5/SDO pin functions

COL2

COL3

Lock number

COL5

ROW5 or SDO Pin

none

SDO

R-Vss

ROW5

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.

(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)

EM91465 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND I.P.P. DETECT FUNCTION

* This specification are subject to be changed without notice.

9.24.1998

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 EM91465 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.

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

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.

EM91465 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND I.P.P. DETECT FUNCTION

* This specification are subject to be changed without notice.

9.24.1998

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 93 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 EM91465 series. To prevent the unavoidable long distance call, then EM91465 inhibits the key entry during
Tdly.

EM91465 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND I.P.P. DETECT FUNCTION

* This specification are subject to be changed without notice.

9.24.1998

Operating flow chart

<Note> : HF = Handfree

HD = Hold

Truth table

Pin level

Operating state

Input

I/O

Output

HKS

XMUTE

HFO

HDO

DTMF

(1) On-hook, idle state

H/F

(2) Off-hook line

H/F

(3) Off-hook, HF line

H/F

(4) On-hook, HF line

H/F

(5) Off-hook, HD line

L/L

(6) On-hook, HD line

L/L

(7) IPP state

L/L

active

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

XMUTE are I/O port, so Input will effect state situation change, and which state dialer stay will
effect output 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 EM32117
). The SDO signal consists of two start bits, six data bits and two stop bits. The 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.

bit 0

bit1

bit2

bit3

bit4

bit5

ready

start bits

data bits

stop bits

(1)

On-hook State

(7)

IPP State

(2)

Off-hook State

(4)

On-hook

Hand-free State

HKS=Lo

HKS=Hi

=Hi

(6)

On-hook

Hold-line State

(3)

Off-hook

Hand-free State

HKS=Hi

HKS=Lo

(5)

Off-hook

Hold-line State

HKS=Hi

XMUTE

XMUTE=Lo

EM91465 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND I.P.P. DETECT FUNCTION

* This specification are subject to be changed without notice.

9.24.1998

<Note> : The display of LCD panel "ST","Hold","HF","A","EM1~EM3","RD" is corresponding to EM32117

with flag types.

Keypad,SDO format and LCD display reference table:

Keypad

bit5

bit4

bit3

bit2

bit1

bit0

Display

"*"/T

*/"T"

STORE

HOLD

Speaker

clear all display

(Lock state)

Lock

EM1~EM3

MEMORY

LOCK function

The EM91465 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~nps3 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.

EM91465 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND I.P.P. DETECT FUNCTION

* This specification are subject to be changed without notice.

9.24.1998

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
or keying Flash.

Correct password entry. The telephone numbers can be dial out no matter what lock number is. If the first

digit is not equal to the lock number then the telephone numbers will be dialed out entirely and use the Flash
key to redial any other number will not check the pass word again.

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
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)

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 ).

I.P.P. DETECT function

The EM91465 series provide the I.P.P. function to pretect illegal connect. I.P.P means Illegal Parallel Phone
Detect. I.P.P. function depend on XMUTE pin and HKS, HF status. When in the ON-HOOK condition and HF
turn off, the XMUTE pin will be a Input pin to detect the voltage lever, otherwises, the XMUTE pin will be a
normally output pin use for control speech network. When I.P.P. function detect. XMUTE pin at "low" status (In
On-Hook and HF turn OFF state), EM91465 will turn on HF and HDO then send alarm signal to telephone line.
In alarm duration DTMF pin will continue sending "#","8" "8" signal. The DTMF signal will interfere the illegal
user until the illegal user hang up the phone and the pin detect "high" again. The telephone circuit design can allow
the illegal internal connect user. (see I.P.P Application CIRCUIT).

EM91465 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND I.P.P. DETECT FUNCTION

* This specification are subject to be changed without notice.

9.24.1998

ABSOLUTE MAXIMUM RATINGS

(Ambient temperature is 25

C, all voltages referenced to V

)

Items

Sym.

Rating

Unit

Power supply voltage

6.0 Vdc

Input voltage range

-0.3V ~ V

+0.3V

Operating temperature

OPR

0 ~ 50

Storage temperature

STO

-55 ~ 125

Power consumption

500

DC ELECTRICAL CHARACTERISTICS

(Ambient temperature is 25

C, V

=2.5V unless otherwise noted, all voltages referenced to V

, Fosc=3.579545 MHz)

Parameter

Sym.

Min.

Typ.

Max. Unit

Condition

Operating voltage

Pulse

2.0

5.5

unload

Tone

2.0

5.5

Operating current(HKS=0)

Pulse

Idd

0.15

0.3

with pull up/down

Tone

0.3

0.5

resistor * 8

Memory retention current

Imrt

0.1

HKS=1,Vdd=1V

Standby current

HKS=1

Istby

0.1

unload

HKS=0

HKS=1

0.1

with pull up/down

HKS=0

resistor * 8

HKS, HFI & DRING

ViH

0.8V

pins: input voltage

ViL

0.2V

Xmute pin : Schmitt triggers

H-L

0.3V

at idle state

(input pin)

L-H

0.7V

HFO & HDO pins source current

IoH

0.2

Vo = 2.0 V

PO, HFO, XMUTE, RMUTE

IoL

-0.2

Vo = 0.5 V

& SDO pins: sink current

PO, XMUTE, RMUTE and SDO

IoH

0.01

Vo = Vdd

pins: leakage current

HFI pin input resistance

Rhfi

200

Vhfi = Vss

Keyboard scanning pins

IoH

Vksn=Vss

output current (except COL4/KT)

IoL

200

400

800

ksn=Vdd

COL4/KT source current

IoH

0.2

Vo=2.0V

sink current

IoL

0.2

Vo=0.5V

DTMF pin: sink current

IoL

-0.2

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

Column - Row

distortion

THD

-30

-23

ZL = 5 K

load resistance

THD

< -

23dB

Distortion(dB)=20 log

{[V

..... +V

)1/2]/[(V

)1/2]}

, V

=ROW group and column group signal.

, V

.... V

= Harmonic signal (BW=300Hz~3500Hz)

EM91465 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND I.P.P. DETECT FUNCTION

* This specification are subject to be changed without notice.

9.24.1998

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

Keyboard debounce time

Tdb

Key tone signal: frequency

Fkt

600

duration

Tkt

Pause time

3.6

sec.

Pulse to Tone waiting time

Tpt

3.6

sec.

Flash time

600

Row3B, Row4B=NR, NR

100

Row3B, Row4B=NR, R-Vss

Row3B,Row4B=R-Vss, NR

300

Row3B,Row4B=R-Vss,R-Vss

Pulse rate

PSR

pps

Row1 = R-Vdd

Row1 = R-Vss

Make/Break ratio

MBR

40:60

Row2 = NR

33:66

Row2 = R-Vss

Inter-digit pause time

Tidp

800

PSR = 10 pps

500

PSR = 20 pps

Minimum tone duration

100

Minimum inter-tone pause

Titp

100

Memory dialing

HD key release hold function

Thdrdb

debounce time
SDO bit time

Tbit

3.8

3.9

4.1

Off-Hook delay time

Tdly

300

Parameter

Sym.

Min.

Typ.

Max. Unit

Condition

AC ELECTRICAL CHARACTERISTIC

(Ambient temperature is 25

C, V

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

EM91465 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND I.P.P. DETECT FUNCTION

* This specification are subject to be changed without notice.

9.24.1998

Figure 8. SDO operating timing

<Note>L=Least significant bit,M=Most significant bit, SB=START bit , SPT=STOP bit

Figure 10. Off-Hook delay time

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

Figure 9. HF and HD operating timing

HKS

KEY IN

SDO

Tdb

b3 b4

b5 SPB SPB

Tbit

Hi-impedance

Tdly

"0" digit dialing time

HFI

HKS

KEY

OSC.

SDO

Hi-impedance

HD @

Thdrdb

HKS

KEY IN

HFO

HDO

XMUTE

SDO

MELODY

Hi-impedance

EM91465 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND I.P.P. DETECT FUNCTION

* This specification are subject to be changed without notice.

9.24.1998

APPLICATION CIRCUIT : CONTROL AND IPP DETECT

NETWORK

AND

HOLD

DRIVER

KEYBORAD

LCD

SPEECH

VDD

470u

16V

BRIDGE

1N4148

PC817

47K

100

100K

4.7M

22M

2K2

1N4148

SW2

100K

47K

3K3

A92

1N4148

3.58M

0.1u

220K

0.1u

10M

47K

4V7

EM91465DK

ROW6

COL5

KT/COL4

COL3

COL2

COL1

XIN

XOUT

XMUTE

VSS

HFI

DRING

RMUTE

HFO

DTMF

VDD

HKS

ROW1

ROW2

ROW3

ROW4

HDO

ROW5/SDO

100K

0.1u

470K

C945

A42

BRIDGE

470

0.1u

PC817

1.2M

27V

0.22u/50V

4K7

1K5

1815

0.001u

0.01u

BUZZER

HFO

HDO

HFO

HDO

DRING

RMUTE

XMUTE

SCAN

LINE

SDO

LINE

EM91465 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND I.P.P. DETECT FUNCTION

* This specification are subject to be changed without notice.

9.24.1998

APPLICATION CIRCUIT : LCD DRIVER USE EM32117

PART VDD

EXTRA

RECOMMAND CRICUIT :

EM32117 can used this cricuit replace

extra battery .

( But if LCD PANEL's power consumption

are too large , the extra battery still be

needed. )

NOTED :

MS1 ,MS2 adjust Time

GF JUMP : General Flag icon for LOGO ON/OFF

CALENDAR JUMP : CALENDAR ON/OFF

RTC JUMP : Real Time Clock ON/OFF

HOUR JUMP : 24/12 format select

VDD

LCD PANEL

COM0

COM1

COM2

SEG2

SEG3

SEG4

SEG5

SEG6

SEG7

SEG8

SEG9

SEG10

SEG11

SEG12

SEG13

SEG14

SEG15

SEG16

SEG17

SEG18

SEG19

SEG20

SEG21

SEG22

SEG23

SEG24

SEG25

SEG26

SEG27

SEG28

SEG29

SEG30

SEG31

COM3

SEG0

SEG1

1N4148

C945

470K

MS2

0.1u

32768

MS1

EM32117

SEG12

SEG13

SEG14

SEG15

SEG16

SEG17

SEG18

SEG19

SEG20

SEG21

SEG22

SEG23

SEG24

SEG25

SEG26

SEG27

SEG28

SEG29

SEG30

SEG31

COM0

COM1

COM2

COM3

VC1

MS1

VC2

VSS

XIN

HKS

SEG0

SEG1

SEG2

SEG3

SEG4

SEG5

SEG6

SEG7

SEG8

SEG9

SEG10

SEG11

MS2

SPARE2

SDI

VDD

XOUT

ENCLND

ENRTC

24/12

TEST

SPARE1

CALENDAR

RTC

HOUR

C945

1.5V BATTERY

SDO

VDD

HKS

SDI

HKS

SDI

TEST

VDD

DIALER

EM91465 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND I.P.P. DETECT FUNCTION

* This specification are subject to be changed without notice.

9.24.1998

APPLICATION CIRCUIT : LCD DRIVER USE EM32100

NOTED :

MS1 ,MS2 adjust Time

RTC JUMP : Real Time Clock ON/OFF

HOUR JUMP : 24/12 format select

EXTRA

** EM32100 need HDO and HFO **

VDD

1N4148

C945

47K

MS2

20p

0.1u

32768

MS1

RTC

HOUR

0.1u

220K

1N4148

EM32100

SEG9

SEG8

SEG7

SEG6

SEG5

SEG4

SEG3

SEG2

SEG1

TEST1

F32H

MS1

MS2

SDI

HKS

VDD

VSS

XIN

SEG20

SEG21

SEG22

SEG23

SEG24

VEE

ENRTC

24/12

XOUT

SEG19

SEG18

SEG17

SEG16

SEG15

SEG14

SEG13

SEG12

SEG11

SEG10

COM1

COM2

COM3

TEST2

1.5V BATTERY

330K

LCD PANEL

COM3

COM2

COM1

SEG1

SEG2

SEG3

SEG4

SEG5

SEG6

SEG7

SEG8

SEG9

SEG10

SEG11

SEG12

SEG14

SEG15

SEG16

SEG17

SEG18

SEG19

SEG20

SEG21

SEG22

SEG23

SEG24

SEG13

SDO

HDO

HKS

SDI

HKS

SDI

TEST AND F32H

HFO

VDD

EM91465 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND I.P.P. DETECT FUNCTION

* This specification are subject to be changed without notice.

9.24.1998

Example :

914XX P

(1)

(2)

(3)

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

PDIP

Skinny

SDIP

PACKAGE INFORMATION

18/20/28 Lead Plastic Package

18 PDIP

MILIMETERS

INCHES

DIM

MIN.

MAX. MIN. MAX.

5.334

.210

0.381

.015

0.356

0.558

.014

.022

1.150

1.778

.045

.070

0.204

0.381

.008

.015

22.35

23.37

.880

.920

7.620

8.255

.300

.325

6.096

7.112

.240

.280

2.286

2.794

.090

.110

10.92

.430

2.921

4.064

.115

.160

20 PDIP

MILIMETERS

INCHES

DIM

MIN.

MAX.

MIN.

MAX.

5.334

.210

0.381

.015

0.356

0.558

.014

.022

1.150

1.778

.045

.070

0.204

0.381

.008

.015

25.40

26.67

1.000

1.050

7.620

8.255

.300

.325

6.096

7.112

.240

.280

2.286

2.794

.090

.110

10.92

.430

2.921

4.064

.115

.160

28 PDIP

MILIMETERS

INCHES

DIM

MIN.

MAX. MIN.

MAX.

6.350

.250

0.381

.015

0.356

0.558

.014

.022

1.016

1.778

.040

.070

0.204

0.381

.008

.015

35.56

37.85 1.400

1.490

15.24

15.88

.600

.625

13.21

14.73

.520

.580

2.286

2.794

.090

.110

17.78

.700

2.921

5.080

.115

.200

EM91465 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND I.P.P. DETECT FUNCTION

* This specification are subject to be changed without notice.

9.24.1998

22/24 Lead Plastic Package-Skinny

22 PDIP (skinny)

MILIMETERS

INCHES

DIM

MIN.

MAX.

MIN.

MAX.

4.752

.180

0.381

.015

0.356

0.558

.014

.022

1.27

1.778

.050

.070

0.204

3.556

.008

.014

25.90

26.67

1.02

1.05

7.620

8.255

.300

.325

6.223

6.604

.245

.260

2.286

2.794

.090

.110

8.382

10.16

.330

.400

2.921

4.064

.115

.160

24 PDIP (skinny)

MILIMETERS

INCHES

DIM

MIN.

MAX.

MIN.

MAX.

4.572

.180

0.381

.015

0.356

0.558

.014

.022

1.27

1.778

.050

.070

0.204

0.381

.008

.015

31.24

32.26

1.23

1.270

7.620

8.255

.300

.325

6.223

6.731

.245

.265

2.286

2.794

.090

.110

8.636

9.652

.340

.380

2.921

4.064

.115

.160

EM91465 SERIES

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE

AND I.P.P. DETECT FUNCTION

* This specification are subject to be changed without notice.

9.24.1998

42 SDIP Package

A A2

42 SDIP

MILIMETERS

INCHES

DIM

MIN.

MAX.

MIN.

MAX.

5.08

0.200

0.381

0.015

3.937

4.191

0.155

0.165

0.356

0.559

0.014

0.022

0.914

1.116

0.036

0.044

0.204

0.304

0.008

0.012

36.70

37.34

1.445

1.470

13.84

14.10

0.545

0.555

1.727

1.829

0.068

0.072

15.24

17.78

0.600

0.70

0.127

0.005

2.921

3.429

0.115

0.135

Ð­Ð»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: EM91465AP

ÐÐ»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: EM91465AP