Silan
Semiconductors

SC91310 Series

HANGZHOU SILAN MICROELECTRONICS CO.,LTD.

Rev: 2.1 2002.12.03

TONE / PULSE DIALER WITH
REDIAL FUNCTION

DESCRIPTION

The SC91310 series are monolithic ICs that provide the necessary

signals for either pulse or tone dialing. The SC91310 series feature a

redial memory.

FEATURES

*DTMF / Pulse switchable dialer

*32 digits for redial memory

*pulse-to-tone (P

T) keypad for long distance call operation

*Break / Make ratio is selectable by pin option

*Uses 4x4 keyboard

*Easy operation with redial, flash, pause, and P

T keypads

*Flash, pause, P

T (pulse-to tone) can be stored as a digit in

memory

*Minimum tone output duration:100ms

*minimum intertone pause: 100ms

*On-chip power-on reset

*Uses 3.579545 MHz crystal or ceramic resonator

*Packaged in 18-pin plastic DIP

DIP-18

ORDERING INFORMATION

(The different dialers in the SC91310 series are shown in the following table)

Type No.

Pulse(pps) Flash(ms)

Flash pause(ms)

Pause(s)

SC91312/A 10/20

600/300 600/300

2.0

SC91314/A 10/20

73/100

140/100

3.6

SC91316 10/20

600

3.6

PIN CONFIGURATIONS

SC91310

HKS

DTMF

VSS

VDD

T/P MUTE

B/M

MODE

Silan
Semiconductors

SC91310 Series

HANGZHOU SILAN MICROELECTRONICS CO.,LTD.

Rev: 2.1 2002.12.03

BLOCK DIAGRAM

KEYBOARD

INTERFACE

D/A

CONVERTER

SYSTEM CLOCK

GENERATION

READ/WRITE

COUNTER

RAM

LOCATION

LATCH

ROW&COLUMN

PROGRAMMABLE

COUNTER

DATA LATCH&

DECODER

CONTROL

LOGIC

PULSE

CONTROL

LOGIC

DTMF

T/P MUTE

B/M

MODE

HKS

ABSOLUTE MAXIMUM RATINGS

Characteristic

Symbol Value

Unit

DC Supply Voltage

-V

-0.3~7.0 V

-0.3 V

+0.3 V

-0.3 V

Input / Output Voltage

+0.3 V

Power Dissipation

120

Operating Temperature

Topr

-20~+70

�

Storage Temperature

Tstg

-55~+125

�

Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and

reliability of the device.

Silan
Semiconductors

SC91310 Series

HANGZHOU SILAN MICROELECTRONICS CO.,LTD.

Rev: 2.1 2002.12.03

DC ELECTRICAL CHARACTERISTICS

(Tamb=25~70

�

C, V

DD~

=2.5V, fosc=3.58MHz, all outputs unloaded)

Parameter Symbol Conditions

Min

Typ

Max

Unit

Operating Voltage

2.0 -- 5.5 V

Tone --

0.3

0.5

Operating Current

Pulse --

0.15

0.3

Standby Current

HKS =0, No load,

& No key entry

-- -- 15

�

Memory Retention Current

HKS =1, V

=1.0V --

0.2

�

DTMF Output Voltage

Row group, R

=5k

130 150 170

mVrms

Pre-emphasis

Col/Row,

=2.0~5.5V 1 2 3 dB

DTMF Distortion

=5k

, V

=2.0~5.5V --

-30

-23

DTMF OUTPUT DC Level

TDC

=5k

, V

=2.0~5.5V 1.0 -- 3.0 V

TMF Output Sink Current

=0.5V 0.2

DP Output Sink Current

=0.5V 0.5

T/P MUTE Output Sink Current

=0.5V 0.5

HKS I/P Pull-high Resistor

300

Keypad Input Drive Current

=0V 30

�

Keypad Input Sink Current

=2.5V 200

400

�

Keypad Resistance

5.0

Silan
Semiconductors

SC91310 Series

HANGZHOU SILAN MICROELECTRONICS CO.,LTD.

Rev: 2.1 2002.12.03

AC ELECTRICAL CHARACTERISTICS

Parameter Symbol Conditions

Min

Typ

Max

Unit

Keypad Active in Debounce

KID

-- 20 -- mS

Key Release Debounce

KRD

-- 20 -- mS

B/M=1

-- 40 --

Pre-digit Pause

PDP1

10pps

B/M=0 --

33.3

B/M=1

-- 20 --

Pre-digit Pause

PDP2

20pps

B/M=0 --

16.7

10pps --

800

Interdigit Pause (Auto dialing)

IDP

20pps --

500

B/M=1 --

40:60

Make / Break Ratio

M/B

B/M=0 --

33:67

DTMF Output Duration

Auto

Dialing

100

Intertone Pause

ITP

Auto

Dialing

100

SC91314

-- 73 --

SC91314A --

100

SC91312A --

300

Flash Break Time

SC91312 / SC91316

600

SC91314A --

100

SC91314 --

140

SC91312A --

300

Flash Pause Time

SC91312 / SC91316

600

SC91312

-- 2.0 --

Pause Time

SC91314A / SC91316

3.6

Note: 1. Crystal parameters suggested for proper operation are Rs<100

, Lm=96mH, Cm=0.02pF, Cn=5pF,

Ci=18pF, Fosc.=3.579545MHz

�

0.02%.

2. Crystal oscillator accuracy directly affects these times.

Silan
Semiconductors

SC91310 Series

HANGZHOU SILAN MICROELECTRONICS CO.,LTD.

Rev: 2.1 2002.12.03

PIN DESCRIPTION

Pin No.

Pin Name

I/O

Description

1~4

15~18

Column-

Row Inputs

The keyboard input may be from either the standard 4x4 keyboard or an

inexpensive single contact (form A) keyboard. Electronic input from a

�

C can

also be used. A valid key entry is defined as a single row being connected to a

single column.

7,8

XT, XT

I,O

A built-in inverter provides oscillation with an inexpensive 3.579545 MHz crystal

or ceramic resonator.

T/P MUTE

The T/P MUTE is a conventional CMOS N-channel open drain output. The

output transistor is switched on during pulse and tone mode dialing sequence

and flash break. Otherwise, it is switched off.

13 MODE I

Pulling mode pin to Vss places the dialer in tone mode. Pulling mode pin to V

places the dialer in pulse mode (10 pps). Leaving mode pin floating places the

dialer in pulse mode (20 pps).

HKS

Hook switch input. HKS = 1: On-hook state. Chip in sleeping mode, no

operation. HKS = 0: Off-hook state. Chip enabled for normal operation. The

HKS pin is pulled to V

by an internal resistor.

N-channel drain dialing pulse output (Figure 1). Flash key will cause DP to go

active in both pulse mode and tone mode.

In pulse mode, remains in low state at all times. In tone mode, outputs a dual or

single tone. Detailed timing diagram for tone mode is shown in Figure 2(a, b).

Output Frequency(Hz)

Specified

Actual

Error

R1 697 699

+0.28

R2 770 766

-0.52

R3 852 848

-0.47

R4 941 948

+0.74

C1 1209 1216

+0.57

C2 1336 1332

-0.30

DTMF O

C3 1477 1472

-0.34

14,6 V

DD,

Vss

Power input pins.

5 B/M

The break make ratio is 60:40 if /M = 1 and is 66.6:33.3 if B/M = 0. This pin has

no function in DTMF mode.

Silan
Semiconductors

SC91310 Series

HANGZHOU SILAN MICROELECTRONICS CO.,LTD.

Rev: 2.1 2002.12.03

FUNCTION DESCRIPTIONS

1. KEYBOARD OPERATION

C1 C2 C3 C4

1 2 3

4 5 6 F

7 8 9

* 0 #

R/P

* F: Flash key

* R/P: Redial and pause function key

* P

T: Pulse mode to tone mode

2. NORMAL DIALING

OFF HOOK , D1 , D2 , ... , Dn

D1, D2, ..., Dn will be dialed out.

2) Dialing length is unlimited, but redial is inhibited if length oversteps 32 digits.

3.REDIALING

OFF HOOK , D1 , D2 , ... , Dn BUSY , COME ON HOOK , OFF HOOK , R/P

The R/P key can execute redial function only as the first key-in after off-hook; otherwise, it will execute pause

function.

4. ACCESS PAUSE

OFF HOOK , D1 , D2 , R/P , D3 , ..., Dn

1) The pause function can be stored in memory.

2) The pause function is executed in normal dialing or memory dialing.

3) The pause function timing diagram is shown in Figure 3.

5. PULSE-TO-TONE (P T)

OFF HOOK , D1 , D2 , ..., Dn , P

T , D1' , D2' , ..., Dn'

1) If the mode switch is set to pulse mode, then the output signal will be:

D1, D2,..., Dn, Pause, D1', D2', ..., Dn'

(Pulse) (Tone)

Silan
Semiconductors

SC91310 Series

HANGZHOU SILAN MICROELECTRONICS CO.,LTD.

Rev: 2.1 2002.12.03

2) If the mode switch is set to tone mode, then the output signal will be:

D1, D2,..., Dn, P

T, D1', D2', ..., Dn'

(Tone) (Pause) (Tone)

3) The dialer remains in tone mode when the digits have been dialed out and can be reset to pulse mode only

by going on-hook.

4) The P

T function timing diagram is shown in Figure 4.

6. FLASH

OFF HOOK , F

1) Flash key can be stored as a digit in memory.

2) The system will return to the initial state after the break time is finished.

3) The flash function timing diagram is shown in Figure 5.

TIMING WAVEFORMS

OSCILLATION

HKS

KEY IN

OSC.

DTMF

T/P MUTE

LOW

NORMAL DIALING

KID

PDP

IDP

Figure 1(a). Pulse Mode Timing Diagram

Silan
Semiconductors

SC91310 Series

HANGZHOU SILAN MICROELECTRONICS CO.,LTD.

Rev: 2.1 2002.12.03

TIMING WAVEFORMS

(continued)

OSCILLATION

HKS

KEY IN

OSC.

DTMF

T/P MUTE

LOW

ON HOOK

PDP

R/P

IDP

AUTO DIALING

Figure 1(b). Pulse Mode Timing Diagram

HKS

KEY IN

DTMF

T/P MUTE

HIGH

ITP

OSCILLATION

NORMAL DIALING

OSC.

KID

KRD

KID

ITP

Figure 2(a). Tone Mode Timing Diagram

Silan
Semiconductors

SC91310 Series

HANGZHOU SILAN MICROELECTRONICS CO.,LTD.

Rev: 2.1 2002.12.03

TIMING WAVEFORMS

(continued)

HKS

KEY IN

DTMF

T/P MUTE

HIGH

OSCILLATION

AUTO DIALING

OSC.

KID

ITP

R/P

Figure 2(b). Tone Mode Auto Dialing Timing Diagram

HKS

KEY IN

DTMF

T/P MUTE

LOW

OSCILLATION

OSC.

IDP

R/P

KID

PDP

IDP

Figure 3. Pause Function Timing Diagram

Silan
Semiconductors

SC91310 Series

HANGZHOU SILAN MICROELECTRONICS CO.,LTD.

Rev: 2.1 2002.12.03

TIMING WAVEFORMS

(continued)

HKS

KEY IN

DTMF

T/P MUTE

OSCILLATION

OSC.

IDP

P-->T

KID

PDP

IDP

Figure 4. Pulse-to-tone Function Timing Diagram

HKS

KEY IN

DTMF

T/P MUTE

OSCILLATION

OSC.

KID

ITP

Figure 5. Flash Function Timing Diagram

Silan
Semiconductors

SC91310 Series

HANGZHOU SILAN MICROELECTRONICS CO.,LTD.

Rev: 2.1 2002.12.03

TYPICAL APPLICATION CIRCUIT

HKS

P-->T

R/P

B/M

MODE

3.58MHz

SPEECH

NETWORK

DTMF

1A Bridge

Tip

Ring

SC91310 SERIES

30pF

VDD

T/P MUTE

VDD

9013

VDD

PULSE

TONE

VR1

250V

D1~D4
IN4004

C1815

A42

On Hook

Off Hook

IN4148

22K

R11

R10

C4 4

IN4148

100

D8 5V1

Q3 9013

C10

0.1

R5 10M

33K

10K

75K

300K

470K

R18

Silan
Semiconductors

SC91310 Series

HANGZHOU SILAN MICROELECTRONICS CO.,LTD.

Rev: 2.1 2002.12.03

CHIP TOPOGRAPHY

Size: 1.19 x 1.65 mm

PAD COORDINATES

(Unit:

�

No.

Symbol

No.

Symbol

1 P1 -430.1 152.7 10 P10 430.5 101.8

2 P2 -430.9 -334.7 11 P11 430.5 349.8

3 P3 -430.9 -504.7 12 P12 430.5 556.6

4 P4 -382.0 -690.1 13 P13 160.1 655.6

5 P5 -211.4

-688.9

14 P14 -36.8 661.7

6 P6 289.3 -680.1 15 P15 -211.5 611.3

7 P7 430.5 -509.7 16 P16 -430.1 672.7

8 P8 430.5 -238.2 17 P17 -430.1 502.7

9 P9 430.5 -68.2 18 P18 -430.1 327.7

Note: The original point of the coordinate is the die center.

Электронный компонент: SC91314