W91210 Ver la hoja de datos (PDF) - Winbond

Número de pieza

componentes Descripción

Fabricante

W91210

TONE/PULSE DIALER WITH REDIAL FUNCTION

Winbond 

W91210 SERIES

Pin Description, continued

SYMBOL 16-PIN I/O

FUNCTION

HKS

DP /C4

DTMF

9

I Hook switch input.

HKS = 1: On-hook state. Chip in sleep mode, no operation.

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

HKS pin is pulled to VDD by internal resistor.

10

O N-channel open drain dialing pulse output (Figure 1). Flash key will

cause DP to be active in either tone mode or pulse mode.

11

O In pulse mode, remains in low state. In tone mode, outputs a dual or

single tone. Detailed timing diagram for tone mode is shown in

Figure 2(a, b).

OUTPUT FREQUENCY

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

C3

1477

1472

-0.34

VDD, VSS 12, 5 I Power input pins.

Publication Release Date: May 1995

-3-

Revision A3

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