SC91650A Ver la hoja de datos (PDF) - Silan Microelectronics

Número de pieza

componentes Descripción

Fabricante

SC91650A

13 MEMORY TONE / PULSE DIALER WITH REDIAL SAVE HANDFREE & HOLD FUNCTION

Silan Microelectronics 

Silan

Semiconductors

SC91650/1/2 A/B

STATE NO.

(0) INITIAL STATE

(1) ON HKS HF LINE

(2) OFF HKS LINE

(3) OFF HKS HF LINE

(3) OFF HKS HD LINE

(3) ON HKS HD LINE

PO

XMUTE HFO

0/F

F

0

1/F

F

1

1/F

F

0

1/F

F

1

1/F

0

0

1/F

0

0

HDO

0

0

0

0

1

1

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

1 Operation

V+

current

A

2 Standby V+

current

A

VDD

DP

keyboard

MODE

DP

HKS VSS

DT

VDD

HKS

VSS

3 Tone output voltage

V+

keyboard

VDD

VSS

TONE

HKS

counter

and

AC meter

10KΩ

4 Tone distortion

V+

keyboard

VDD

VSS

TONE

HKS

Spectrum

analyzer

V 10KΩ

5 Pulse output sink current

(open drain structure)

V+

Flash

key

VDD

PO

VSS HKS

A

VEXT

V

6 Pulse output sink current

(inverter structure)

V+

VDD

HKS

PO

VSS

A

V

VEXT

7 Keypad input current (row group)

V+

A

VDD

R*

ROW

C*

HKS VSS MODE

8 keypad input current (column group)

V+

VDD

R*

COLUMN

C*

A

HKS VSS MODE

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

REV: 1.0

2001.01.15

16

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