W9145A Просмотр технического описания (PDF) - Winbond

Номер в каталоге

Компоненты Описание

производитель

W9145A

15-MEMORY TONE/PULSE DIALER WITH LOCK AND HANDFREE FUNCTIONS

Winbond 

W9145 SERIES

Pin Description, continued

SYMBOL 22-PIN

DTMF

11

24-PIN

11

I/O

FUNCTION

O In pulse mode, remains in low state at all times. In tone

mode, will output 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

C3

1477

1472

-0.34

BLOCK DIAGRAM

ROW

(R1 to R5)

COLUMN

(C1 to C4)

DTMF

KEYBOARD

INTERFACE

XT

XT

HKS

SYSTEM CLOCK

B/M

MODE

GENERATOR

HFI

READ/WRITE

COUNTER

CONTROL

LOGIC

LOCK

TEST

PULSE

CONTROL

LOGIC

RAM

X MUTE

T/P MUTE

KT

HFO

DP/C5

LOCATION

LATCH

D/A CONVERTER

ROW & COLUMN

PROGRAMMABLE

COUNTER

DATA LATCH

& DECODER

Publication Release Date: August 1996

-5-

Revision A4

Share Link: