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SC91650/1/2 A/B

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

REV: 1.0

2001.01.15

13 MEMORY TONE / PULSE DIALER

WITH REDIAL SAVE HANDFREE &

HOLD FUNCTION

DESCRIPTION

The SC91650A/B, SC91651A/B, SC91652A/B are 13-memory

Tone/Pulse switchable dialer with Last Number Redial(LNB) and

HOLD function, which are fabricated in COMS technology with wide

operating voltage for both tone and pulse mode, and consumes very

low memory retention current in ON-HOOK state.

FEATURES

*13-memory Tone/Puls e switchable dialer

*Three 16-digit one touch memory and ten 16-digit two touch

memory

One 32-digit last number redial memory

One 32-digit SAVE function for storing phone number in off hook

status

Note: only 15-digit/31-digit for Tone mode, 1-digit use to identify

tone mode

*Pulse-to-tone (P

T) is provided for PBX operation

*Flash key is available

*Minimum tone duration is 100ms for SC91650, SC91651 or 91ms

for SC91652

*Minimum intertone pause is 106ms for SC91650, SC91651 or

91ms for SC91652

*Uses 3.579545MHz crystal or ceramic resonator

*Many options can be selected

Mode (10PPS; 20PPS; Tone)

M/B ratio (40:60;33:66)

Pause time (3.6s;2.0s)

Pulse number (n;n+1;10-n)

Flash function (RESET;digit)

T) pause time (3.6s;1.0s)

Flash time (80ms; 93ms; 100ms; 200ms; 300ms; 600ms)

Flash pause time (200ms; 1000ms)

* Redial pause time (1ms)

* Mixed dialing and cascade dialing is provided

* Handfree function is provided for speaker phone application

DIP-22

DIP-18

*Power on reset circuit is provided

*Hold function is provided

* Keytone is provided

*Packaged in 18-DIP or 22-DIP

ORDERING INFORMATION

SC91650A

DIP-18 Package

SC91650B

SC91651A

SC91651B

SC91652A

SC91652B

DIP-22 Package

DIP-18 Package

DIP-22 Package

DIP-18 Package

DIP-22 Package

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Semiconductors

SC91650/1/2 A/B

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

REV: 1.0

2001.01.15

PIN CONFIGURATIONS

91650/1A

HKS

OSCI

OSCO

TONE

XMUTE

91650/1B

OSCI

OSCO

XMUTE

HKS

TONE

HDI

HFO

MODE

HDO

MODE

HFI

91652A

HKS

OSCI

OSCO

TONE

XMUTE

91652B

OSCI

OSCO

XMUTE

HKS

TONE

PMUTE

HFO

MODE

HFI

SELECTION GUIDE

HDI

HFI

PMUTE

Tone Duration

SC91650A

Inverter

100mS

SC91650B

Inverter

100mS

SC91651A

Open drain

100mS

SC91651B

Open drain

100mS

SC91652A

Open drain

91mS

SC91652B

Open drain

91mS

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SC91650/1/2 A/B

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

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BLOCK DIAGRAM

OSC.

DIVIDER

LUM

RNE

INPUT INTERFACE CKT.

LNB MEMORY

D/A CONVERTER

ROW/COLUMN

PROGRAMMING

COUNTER

DECODER &

DATA LATCH

PULSE

GENERATOR

TONE

HDI

ROW4

ROW3

ROW2

ROW1

OSCO

OSCI

COL4

COL3

COL2

COL1

XMU

COL5

SAVE MEMORY

MEMORY

HDO

VDD

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SC91650/1/2 A/B

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

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KEYBOARD ASSIGNMENT

SAVE

EM1

EM2

EM3

*/T

RD/P

1) */T: In pulse mode, execute P

T function; In TONE mode, execute * key

2) SAVE: SAVE key.

3) F: Flash key

4) RD/P: Redial key/Pause key

5) ST: Store key

6) EMn: One touch memory key

7) A: Auto key for two touch memory

DIALING SIGNAL OPTION

The resistor connection between selected Row (or Column) and Vss may select most country telecom

specifications (refer to Row and Column pin description). Those options include M/B ratio, Flash time, pause time

......

, as follows.

a): Make/Break ratio:

d): Flash time:

Row1

M/B ratio (%)

Row3

Row4

Flash time (ms)

40:60

600

33:66

300

*100

b): Pause time & P

T wait time:

200

*80

Row2

(sec)

*for SC91652 only

3.6

2.0

1.0

e): Dialing out Pulse number:

Column3

Column4

Pulse number

c): Flash Key function:

Column1

Flash key

(sec)

n+1

Reset

0.2/0*

10-n

Digit

1.0

reserved

* for flash time = 80ms, 200ms only

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Note: 1). NR = No resistor connection to Vss.

2). R = A resistor connection to Vss (820k typically).

3). N = Pressed digit key.

4). The following list is the corresponding pulse (break) numbers that are sent out by pressed the number

keys.

Digit key

Normal (n)

New Zealand (10-n)

Sweden/Denmark (n+1)

T KEY

ignored

Dialing signal option

ABSOLUTE MAXIMUM RATINGS

(Tamb=25

�

C, All voltage referenced to V

, unless otherwise specified)

Characteristic

Symbol

Value

Unit

Power Supply Voltage

6.0

Input Voltage

-0.3~V

+0.3

Power Dissipation

500

Operating Temperature

Topr

-25~+70

�

Storage Temperature

Tstg

-55~+150

�

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ELECTRICAL CHARACTERISTICS

(Tamb=25

�

C, V

=2.5V, fosc=3.579545MHz, All voltage referenced to V

SS,

unless otherwise specified)

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

DC Characteristics

Tone

2.0

5.5

Pulse

2.0

5.5

Operating Voltage

Memory retention

1.0

5.5

Tone

0.4

OFF-HOOK, Keypad

entry with pull down

resistance

0.2

0.5

Operating Current

Pulse

OFF-HOOK,

Keypad entry

�

Standby Current

ON-HOO K

No keypad entry

0.1

1.0

�

Memory Retention Current

Imr

ON-HOO K

=1.0V

0.1

1.0

�

Control Pin Input Low Voltage

Vil

0.3V

Control Pin Input High Voltage

Vih

0.7V

XMUTE Pin Leakage Current

Imth

XMUTE

=6.0V

�

XMUTE Pin Sink Current

Imtl

XMUTE

=0.5V

0.2

HKS Pin Input Current

Ihks

Vhks=2.5V

0.1

�

Drive Current

Ikbd

Vn=0V

note1

No resistors connected t o V

Keyboard

Scanning Pin

Sink Current

Ikbs

Vn=2.5

note1

No resistors connected t o V

200

400

800

�

Key-in Debounce Time

HFI pin input resistor

Rhfi

=2.5V

200

HFO pin drive current

Ihdoh

Vhfo=2.0V

0.2

HFO pin sink current

Ihdol

Vhfo=0.5V

0.2

HDI pin pull high resistor

Rhdi

=2.5V

200

HDO pin drive current

Ihdoh

Vhdo=2.0V

0.2

HDO pin sink current

Ihdol

Vhdo=0.5V

0.2

Pulse Mode

Pulse Output Pin Leakage Current

Ipoh

Vpo=2.0V(SC91650 only)

0.2

Pulse Output Pin Sink Current

Ipol

Vpo=0.5V

0.2

Pulse Rate

fpr

pps

40:60

Make/Break Ratio

33:66

(to be continued)

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(continued)

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

M/B ratio=40:60

Pre-digit Pause

PDP

M/B ratio=33:66

Pulse rate=10pps

800

Inter-digit Pause

IDP

Pulse rate=20pps

500

Tone Mode

DC Level

Vdc

=2.0V~5.5V

0.5V

0.7V

Sink Current

Itl

Vdtmf=0.5V

0.2

AC level

Vdtmf

Row group

=5K

130

155

180

mVrms

Tone

Output Pin

Load Resistor

Dist.

-23dB

Pre-emphasis

twist

=2.0~5.5 V,

Column-Row group

DTMF Signal

Distortion

Dist.

=5K

-30

-23

100

Minimum tone duration Time

(note 3)

Auto redial

106

Minimum Intertone Pause Time

(note 3)

ITP

Auto redial

Note: 1. Vn: Input voltage of any keyboard scanning pin (Row group, Column group)

Distortion (dB) = 20log

{[

+...Vn

)

1/2

]

[

)

1/2

]}

: Row group and Column group signal , V1

V2...

Vn: Harmonic signal (BW = 300Hz ~ 3500Hz

ACTUAL FREQUENCY OUTPUT

(fosc=3.579545MHz)

Keyboard Scanning Pin

Standard(Hz)

Output

Deviation(%)

697

699

+0.28

770

766

-0.52

852

848

-0.47

941

948

+0.74

1209

1216

+0.57

1336

1332

-0.30

1477

1472

-0.34

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PIN DESCRIPTION

Pin No.

650A/B 651A/B 652A/B

Pin Name

Description

*Provides keyboard scanning.

a. Dialling option:

*The resistor connection between selected Row (or Column) and Vss

may select most countries telecom specification.

R=820k

C4 C3 C2 C1

b. Keyboard scanning:

*While

HKS

pin is HIGH, Both column pin and row pin are in floating

state. While

HKS

pin is LOW, the column group stays in "HIGH"

state and row group stays in "LOW" state.

*The keypad is compatible with the standard dual contact matrix

keyboard (as figure1b), the inexpensive single contact keyboard (as

figure 1a), and electronic input (as figur e 1c).

*When HKS is "LOW", a valid key entry is defined by related Row &

Column connection or by electronic input (as shown in figur e 1c).

*Activation of two or more keys will result in no response, except for

single key.

*To avoid keyboard-bouncing error, this chip provides built-in

debounce circuit. (Th e debounce time = 20ms)

Column

Row

Column

Row

Column

Row

Figure1a: Single contact form

keyboard configuration

Figure1b: Dual contact form

keyboard configuration

Figure1c: Electronic signal input keyboard configuration

(to be continued)

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(continued)

Pin No.

650A/B 651A/B 652A/B

Pin Name

Description

OSCI

OSCO

*Oscillator input & output pins.

*The 3.579545MHz oscillator is formed by a built-in inverter inside of

this chip and by connecting a 3.579545MHz crystal or a ceramic

resonator across the OSCI and OSCO pins. (built-in feedback resistor

and capacitor)

*When HKS is "LOW", a valid key-in may turn on this oscillator and

generates a 3.579545 MHz clock.

XMUTE

*Mute output pins.

*NMOS open drain output structure.

*The output is in "LOW" state during dialing sequence (both Pulse

and Tone mode) and in Hold status otherwise this pin is

"high-impedance".

*Long (continue) Mute.

VSS

*Negative power supply pin.

VDD

*Positive power supply pin.

HKS

*Hook switch input pin.

*When the handset is in ON-HOOK state, this pin must be pulled

"high" in order to disable the dialing operation and decrease the

power consumption.

*When in OFF-HOOK state, th e HKS pin must be pulled "low" state

for all function operation.

*Pulse output signal pin.

*Inverter output structure (SC91650).

*The output is "LOW" during pulse dialing and Flash operation,

otherwise this output is "high".

*NMOS open drain output structure.

TONE

*Dual Tone Multi-frequency output pin.

*In TONE mode, when an entry of digit key (include *, # key), this pin

will send out a corresponding DTMF signal.

*The TONE pin provides minimum tone duration (t

) and minimum

intertone pause time to support rapid key-in. If key-in time is less than

TD (

100ms), DTMF signal will last for t

TD (

100ms); otherwise the tone

duration will last as long as the key is pressed.

MODE

*Mode select pin.

*Tri-state input structure.

*This pin can select following three modes.

(to be continued)

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(continued)

Pin No.

650A/B 651A/B 652A/B

Pin Name

Description

HFI

*Handfree input control pin. (SC91650, SC91651)

*Toggle input structure, rising edge trigger.

*It is used to enable and disable Handfree funtion.

*With waveshaped by a built-in Schmit trigger, the bounce of input

can be eliminated by external R

�

C debounce circuit.

* A built-in pull down resistor is 200k

typical.

HFI

* Toggle input structure with pull up resistance 200k

, falling edge

trigger. (SC91652)

HFO

* Handfree output pin.

* Inverter output structure (normally `low', active `high').

* When a HFI pin is active, Handfree function will be enabled

(HFO=1) or disable (HFO=0).

* When the Handfree function is enable (HFO=1), after OFF-HOOK

action, it can reset Handfree function and HFO pin return to `low'

state.

HDI

*Hold line input control pin.

*Toggle input structure, falling edge trigger.

*It is used to enable and disable Hold line function.

*With waveshaped by a built-in Schmit trigger, the bounce of input

can be eliminated by extenal R.C debounce circuit.

*A built-in pull up resistor is 200k

typically.

HDO

*Hold line output pin.

*Inverter output structure, falling edge trigger.

*When a falling edge signal triggered HDI pin, Hold line function will

be enable (HDO=1) or disabled(HDO=0).

*When the Hold line function is enable (HDO=1), after OFF-HOOK

action or HFO pin is from "low" to "high", it can reset Hold line

function and HDO pin return to "low" state.

*Keytone output pin for ralid key pad input and memory stored

(SC91652 only).

*CMOS invertor output structure.

*It will issue a 1.2kHz, duty cycle 50% signal with duration 30ms.

*To prevent signal interference, while DTMF issue, it will disable

Keytone output except function key.

PMUTE

*Pulse mode mute.

*CMOS inverter output structure.

*The output is high state during dialing sequence (pulse mode only),

otherwise this pin is low.

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KEYBOARD OPERATION

Symbol definitions:

OFF-HOOK or enable Hand Free function.

ON-HOOK or disable Hand Free function.

Input level from low to high.

Input level from high to low.

D1~Dn

Digit key

1, 2, 3, 4, 5, 6, 7, 8, 9, 0, *, #, (C1~Cn is same as D1~Dn).

Dp1~Dpn

Pulse digit

1, 2, 3, 4, 5, 6, 7, 8, 9, 0, (Cp1~Cpn is same as Dp1~Dpn).

Dt1~Dtn

Tone digit

1, 2, 3, 4, 5, 6, 7, 8, 9, 0, *, #, (Ct1~Ctn is same as Dt1~Dtn).

Flash time.

Pause time.

Pulse to Tone wait time.

Pause time for flash.

Pause time for redial.

LNB

Last number redial buffer.

...

Memory location; 1, 2, 3, 4, 5, 6, 7, 8, 9, 0.

Normal Dialing

1. Digit Dialing

Procedure

D1,

D2..., Dn

Dial out

Dt1,

Dt2...,

Dtn (in Tone mode)

Dial out

Dp1,

Dp2,..., Dpn (in Pulse mode)

LNB

D1,

D2...,

2. Dialing with flash key

Procedure

F, D1, D2..., Dn

Dial out

Dt1,

Dt2...,

Dtn (in Tone mode)

Dial out

Dp1,

Dp2,

...,

Dpn (in Pulse mode)

LNB

D1,

D2...,

Dn (reset function only)

LNB

Un change (Digit Function only)

3. Dialing with P

T key

Procedure

D1,

...,

T , ...,

Dial out

Dp1,

Dp2, ...,

, ..., Dpn (in Pulse mode)

LNB

D1,

D2 ...,

T , ...,

Note: If key in digit over maximum digit stored in LNB, then RD is inhibit even after on/off hook.

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Mixed dialing

Procedure

D1,

D2...,

MODE=

, D9, D10 ...,

; or

D1,

D2...,

T , D9, D10 ...,

Dial out

Dp1,

Dp2, ...,

Dt9,

Dt10...,

Dtn

LNB

D1,

D2..., P

T ,

D9,

D10 ...,

Redial

LNB

D1,

D2...,

Procedure

Dial out

Dt1,

Dt2...,

Dtn

(In Tone mode)

Dial out

Dp1,

Dp2,...,

Dpn

(in Pulse mode)

Note: If key in digit over maximum digit stored in LNB, then RD is inhibit.

Pause Function

Procedure

D1,

D2...,

Dn, P, C1 ...,

Dial out

Dt1,

Dt2 ,...,

Dtn, t

, Ct1,

Ctn

(in Tone mode)

Dial out

Dp1,

Dp2, ... Dpn , t

, Cp1 ...,

Cpn

(in Pulse mode)

LNB

D1, D2..., Dn, P , C1, C2 ..., Cn

Flash Function

1. Reset

Procedure

D1,

D2...,

Dn,

C1 ..., Cn

Dial out

Dt1,

Dt2,..., Dtn , t

Ct1 ..., Ctn

(in Tone mode)

Dial out

Dp1,

Dp2,..., Dpn ,

, Cp1 ..., Cpn

(in Pulse mode)

LNB

C1,

C2 ...,

2 Digit

Procedure

D1,

D2...,

Dn,

C1 ..., Cn

Dial out

Dt1,

Dt2,..., Dtn , t

Ct1 ..., Ctn

(in Tone mode)

Dial out

Dp1,

Dp2,..., Dpn ,

, Cp1 ..., Cpn

(in Pulse mode)

LNB

D1,

D2 ...,

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One Touch Memory Function

1. Store Memory

Procedure

ST,

D1,

D2...,

Dn,

ST,

EMn

Dial out

Nothing

EMn

D1,

D2,...... Dn

Procedure

ST,

D1,

D2......,F, ...... Dn,

ST,

EMn

Dial out

Nothing

EMn

D1,

D2,......,F, ......Dn

Procedure

ST,

D1,

D2......,P, ...... Dn,

ST,

EMn

Dial out

Nothing

EMn

D1,

D2,......,P, ......Dn

Procedure

ST,

D1,

D2......,P

T, ...... Dn,

ST,

EMn

Dial out

Nothing

EMn

D1,

D2,......, P

T, ......Dn

2 Quickly Store

Procedure

ST,

D1,

D2,

ST,

EM1,

ST,

D3,

D4,

D5,

St,

EM2,

ST,

EMn

Dial out

Nothing

EM1

D1, D2;

EM2

D3, D4, D5,

EMn

D3, D4, D5

LNB

D1,

D2 ...,

3 Redial

EMn

D1 , D2, ......Dn

Procedure

EMn

Dial out

Dt1,

Dt2, ...... Dtn (in tone mode)

Dial out

Dp1,

Dp2, ...... Dpn (in pulse mode)

LNB

D1,

D2,......Dn

Two Touch Memory Function

1. Store Memory

Procedure

ST,

D1,

D2...,

Dn,

ST,

EMn

Dial out

Nothing

EMn

D1,

D2,...... Dn

Procedure

ST,

D1,

D2......,F, ...... Dn,

ST,

EMn

Dial out

Nothing

EMn

D1,

D2,......,F, ......Dn

Procedure

ST,

D1,

D2......,P, ...... Dn,

ST,

EMn

Dial out

Nothing

EMn

D1,

D2,......,P, ......Dn

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Procedure

ST,

D1,

D2......,P

T, ...... Dn,

ST,

EMn

Dial out

Nothing

EMn

D1,

D2,......, P

T, ......Dn

2 Quickly Store

Procedure

ST,

D1,

D2,

ST,

EM1,

ST,

D3,

D4,

D5,

St,

EM2,

ST,

EMn

Dial out

Nothing

EM1

D1, D2;

EM2

D3, D4, D5,

EMn

D3, D4, D5

LNB

D1,

D2 ...,

3 Redial

EMn

D1 , D2, ......Dn

Procedure

EMn

Dial out

Dt1,

Dt2, ...... Dtn (in tone mode )

Dial out

Dp1,

Dp2, ...... Dpn (in pulse mode)

LNB

D1,

D2,......Dn

Save Function

1. The Second Redial Memory

Procedure

D1,

D2 , ...... Dn,

dialing end,

SAVE

Dial out

Dt1,

Dt2 , ...... Dtn (in tone mode)

Dial out

Dp1,

Dp2,

...... Dpn (in pulse mode)

LNB

D1,

D2,

...... Dn

2 Store Phone Number In Conversation

Procedure

ST, D1, D2, ...... Dn, conversation, ST, C1, C2, ......

Cn, ST, SAVE

Dial out

Dt1,

Dt2 , ...... Dtn (in tone mode)

Dial out

Dp1,

Dp2,

...... Dpn (in pulse mode)

SAVE

C1,

C2,

...... Cn

LNB

C1,

C2,

...... Cn

Note: If key in digit over maximum digit stored in SAVE, then SAVE is ignore.

The data in SAVE is no change, and can dial out after on/off hook.

3 Redial

SAVE

D1,

D2,

...... Dn

Procedure

SAVE

Dial out

Dt1,

Dt2, ...... Dtn (in tone mode )

Dial out

Dp1,

Dp2, ...... Dpn (in pulse mode)

LNB

D1,

D2,......Dn(SC91652 only)

LNB

Un change (SC91650, SC91651)

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Cascade Dialing

1. Normal Dialing and Memory

Procedure

D1, D2, ...... Dn, EM1, EMm ... EMn, A, Mn

2. One Touch Memory and Memory

Procedure

EMm

......

Emn,

3. LNB and Memory

Procedure

RD,

EM1,

EMm

......

EMn,

4. SAVE and Memory for SC91652 only

Procedure

SAVE,

EM1,

EMm

......

EMn,

Handfree Function operation:

A) To execute Handfree function: When HFO = 'low', HFI pin is active, the Handfree function will be enabled (HFO

= 'high')

B) Reset Handfree function:

a. OFF-HOOK action.

b. When HFO = 'high', a HFI pin is active again, the Handfree function will be reset (HFO='low').

c. When HDO pin is from "low" to "high", the Handfree function will be reset (HFO="low").

Hold Line Function Operation:

A) To execute Hold Line function: When HFO = 'high' state or HKS is low, HDI pin is active, the Hold line function

will be enable ( HDO = "high" ). The XMUTE pin keep to "low", when HDO stays in "high" state.

B) Reset Hold Line function:

a. OFF-HOOK action.

b. HFO pin from "low" to: "HIGH level.

c. When HDO = "high", HDI pin is active, the Hold line function will be disabled (HDO="low").

Operating flow
chart of Handfree

(3)

OFF HKS

HF LINE

(2)

OFF HKS

LINE

(1)

ON HKS
HF LINE

(0)

ON HKS

INITIAL

OFF

(4)

OFF HKS

LINE

(5)

ON HKS
HF LINE

OFF

Silan
Semiconductors

SC91650/1/2 A/B

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

REV: 1.0

2001.01.15

STATE NO.

XMUTE

HFO

HDO

(0) INITIAL STATE

0/F

(1) ON HKS HF LINE

1/F

(2) OFF HKS LINE

1/F

(3) OFF HKS HF LINE

1/F

(3) OFF HKS HD LINE

1/F

(3) ON HKS HD LINE

1/F

ON/OFF: ON/OFF HKS

HF: Depress HF key

HD: Depress HF key

F: Floating (Hi-impedance)

PO is floating for SC91651/

SC91652

open

drain

struc-ture.

TEST CIRCUIT

HKS

MODE

keyboard

Operation

current

Standby

current

V+

Tone output voltage

Tone distortion

keyboard

HKS

TONE

V+

keyboard

counter

and

AC meter

10K

HKS

TONE

V+

Spectrum

analyzer

10K

HKS

V+

HKS V

Keypad input current (row group)

V+

ROW

MODE

Pulse output sink current

(open drain structure)

Pulse output sink current
(inverter structure)

HKS V

V+

COLUMN

MODE

Flash

key

HKS

V+

VEXT

V+

HKS

VEXT

keypad input current (column group)

Silan
Semiconductors

SC91650/1/2 A/B

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

REV: 1.0

2001.01.15

Note: 1. Dist. (dB)=20log

{[

+...V

)

1/2

]

[

)

1/2

]}

a. V1...Vn are extraneous frequencies (ie, inter modulation and harmonic), components in the 500Hz

to 3400Hz band.

b. V

are the individual frequency components of DTMF signal.

c. Whether keyboard is pushed refer to the TONE mode time diagram.

2. Sink current Isink=I/(1-Duty Cycle), I is the net DC current measured from ampere meter.

3. R*, C* mean other column and row.

TIMING DIAGRAMS

HKS

KEY IN

XMUTE

**PO

TONE

OSCO

ITP

Normal dialing

......High impedance

ITP

Tone Mode Timming Diagram

HKS

KEY IN

XMUTE

**PO

TONE

OSCO

IDP

Normal dialing

......High impedance

PDP

IDP

Pusle Mode Timming Diagram

PMUTE

Silan
Semiconductors

SC91650/1/2 A/B

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

REV: 1.0

2001.01.15

TIMING DIAGRAMS

(continued)

HKS

KEY IN

XMUTE

**PO

TONE

OSCO

IDP

......High impedance

ITP

PDP

Timming Waveform for mixed dialing Operation (by */T key entry)

for SC91650, SC91651

HKS

KEY IN

XMUTE

**PO

TONE

OSCO

IDP

......High impedance

ITP

PDP

Timming Waveform for mixed dialing Operation (by mode selection pin switches)

for SC91650, SC91651

MODE

Silan
Semiconductors

SC91650/1/2 A/B

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

REV: 1.0

2001.01.15

TIMING DIAGRAMS

(continued)

HKS

KEY IN

XMUTE

DTMF

OSCO

IDP

......High impedance

ITP

*/T

PDP

Timming Waveform for mixed dialing Operation (by */T key entry)

for SC91652 only

HKS

KEY IN

XMUTE

TONE

OSCO

......High impedance

Flash key operating timming

Silan
Semiconductors

SC91650/1/2 A/B

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

REV: 1.0

2001.01.15

TIMING DIAGRAMS

(continued)

HKS

KEY IN

XMUTE

**PO

TONE

OSCO

......High impedance

ITP

Tone Mode Redial Timming Diagram

HKS

KEY IN

XMUTE

**PO

TONE

OSCO

......High impedance

IDP

Pulse Mode Redial Timming Diagram

AUTO DIALING

Silan
Semiconductors

SC91650/1/2 A/B

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

REV: 1.0

2001.01.15

TIMING DIAGRAMS

(continued)

XMUTE

DTMF OUT

OSCO

......High impendance

ITP

HKS

KEY IN

XMUTE

DTMF

OSCO

PDP

IDP

ITP

Pause key operating timming(for SC91652 only)

*TONE MODE

*PULSE MODE

HKS

KEY IN

XMUTE

**PO

TONE

OSCO

......High impedance

Flash key operation timing

Silan
Semiconductors

SC91650/1/2 A/B

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

REV: 1.0

2001.01.15

TYPACAL APPLICATION CIRCUIT

(for SC91650A)

SC91650A

SPEEC

TONE

OSC

I
OSC

3.3k

47k

100k

22M

A92

100

�

16V

470k

OOK

Ri
n

1N
4004x

100k

2SC

945

3.579545MH

ZNR

120V

RD/P

UTE

A42

240k

820k

10pps

20pps

220k

1.5k

200

2SC

945

0.2

�

OFF

OOK

0.1

�

D
5.1V

IN
4148

2.2k

IN
4148

�

16V

.
0

�

Silan
Semiconductors

SC91650/1/2 A/B

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

REV: 1.0

2001.01.15

TYPACAL APPLICATION CIRCUIT

(for SC91650B)

91650B

RD/

10pps

20pps

�

820k

2t
o4w

i
r
e

peec

net

rk
&

audio

lif

ier

NDS

66T

OOK

Ri
n

1N
4004x

ZNR

120V

TO
N

HKS

HF
O

HF
I

HDO

HDI

579545M

200

�

945

4.7k

I
N

4148

�

470k

�

47k

KEY

�

100k

945

I
N

4148

200k

100k

22M

PSA92

240k

945

�

945

KEY

�

470k

22k

945

�

50V

100

�

16V

100k

220k

Silan
Semiconductors

SC91650/1/2 A/B

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

REV: 1.0

2001.01.15

TYPACAL APPLICATION CIRCUIT

(for SC91651A)

SC91651A

i
r
et
o4w

i
r
e

peec

netw

TONE

OSC

2.2k

100k

22M

PSA92

100

�

F16V

470k

OOK

Ri
n

1N
4004x

100k

2SC

945

3.579545MH

ZNR

120V

R/P

UTE

PSA42

40k

820k

10pps

20pps

220k

OFF

0.1

�

2.7k

IN4148x

�

16V

.
0

�

330k

IN4148

100k

100

�

F16V

5.1V

Silan
Semiconductors

SC91650/1/2 A/B

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

REV: 1.0

2001.01.15

TYPACAL APPLICATION CIRCUIT

(for SC91651B)

91651B

RD/

10pps

20pps

�

820k

2t
o4w

i
r
e

peec

net

rk
&

audio

lif

ier

NDS

66T

OOK

Ri
n

1N
4004x

ZNR

120V

TO
N

HKS

HF
O

HF
I

HDO

HDI

579545M

200

�

945

4.7k

I
N

4148

�

470k

�

47k

KEY

�

100k

945

I
N

4148

200k

100k

22M

PSA92

240k

945

�

945

KEY

�

470k

22k

945

�

50V

100

�

16V

100k

220k

HFO

47k

100k

330k

Silan
Semiconductors

SC91650/1/2 A/B

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

REV: 1.0

2001.01.15

TYPACAL APPLICATION CIRCUIT

(for SC91652A)

SC91652A

i
r
et
o4w

i
r
e

peec

netw

TONE

OSC

2.2k

100k

22M

PSA92

100

�

F16V

470k

OOK

Ri
n

1N
4004x

100k

2SC

945

3.579545MH

ZNR

120V

R/P

UTE

PSA42

240k

820k

10pps

20pps

220k

OFF

0.1

�

2.7k

IN4148x

�

16V

.
0

�

330k

IN4148

100k

100

�

F16V

5.1V

Silan
Semiconductors

SC91650/1/2 A/B

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

REV: 1.0

2001.01.15

TYPACAL APPLICATION CIRCUIT

(for SC91652B)

SC91652B

RD/P

*/T

EM1

EM2

EM3

VDD

10pps

20pps

TONE

0.01

�

MODE

820k x7

2 to 4 wire

speech network & audio

amplifier

TO HANDSET

ON HOOK

Tip

Ring

1N4004x4

ZNR

120V

TONE

OSCI

OSCO

XMUTE

HKS

MODE

HFO

200

0.2

�

C945

IN4148

5.1V

�

470k

47k

KEY

�

100k

C945

IN4148

200k

100k

22M

MPSA92

240k

3.3k

C945

�

100

�

16V

2.2k

3.579545MHz

PMUTE

HFI

HFO

47k

100k

330k

Электронный компонент: SC91650B