W91210 Ver la hoja de datos (PDF) - Winbond

Número de pieza

componentes Descripción

Fabricante

W91210

TONE/PULSE DIALER WITH REDIAL FUNCTION

Winbond 

BLOCK DIAGRAM

W91210 SERIES

HKS

MODE

XT XT

SYSTEM CLOCK

GENERATION

ROW

(R1 to R4)

COLUMN

(C1 to C3)

DTMF

KEYBOARD

INTERFACE

READ/WRITE

COUNTER

RAM

LOCATION

LATCH

CONTROL

LOGIC

PULSE

CONTROL

LOGIC

T/P MUTE

DP/C4

D/A

CONVERTER

ROW & COLUMN

PROGRAMMABLE

COUNTER

DATA LATCH

& DECODER

FUNCTIONAL DESCRIPTION

Keyboard Operation

C1

C2

C3

DP /C4

1

2

3

F1

R1

4

5

6

F2

R2

7

8

9

F3

R3

*/T

0

#

R/P

R4

• */T: * and P→T key

• R/P: Redial and pause function key

• F1, F2, F3: Flash keys

Normal Dialing

OFF HOOK , D1 , D2 , …, Dn

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

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

-4-

Share Link: