W91442N 查看數據表（PDF） - Winbond

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W91442N

10-MEMORY TONE/PULSE DIALER WITH SAVE FUNCTION

Winbond 

W91440N SERIES

BLOCK DIAGRAM

ROW

(R1 to R4, Vx)

COLUMN

(C1 to C5)

KEYBOARD

INTERFACE

DTMF

D/A

CONVERTER

XT XT

SYSTEM CLOCK

GENERATOR

HKS

READ/WRITE

COUNTER

CONTROL

LOGIC

MODE

LOCATION

LATCH

RAM

PULSE

CONTROL

LOGIC

ROW & COLUMN

PROGRAMMABLE

COUNTER

DATA LATCH

& DECODER

T/P MUTE

DP

FUNCTIONAL DESCRIPTION

Keyboard Operation

C1 C2 C3 C4 C5

1

2

3

S

R1

4

5

6 F4

R2

7

8

9

A

R3

∗/T 0

# R/P SAVE R4

F1 F2 F3

VX

• S: Store function key

• A: Indirect repertory dialing function key

• R/P: Redial and pause function key

• SAVE: Save function key

• ∗/T: ∗ in tone mode and P→T in pulse mode

• F1, ..., F4: Flash keys, F1 = 600 mS, F2 = 300 mS, F3 = 73 mS, F4 = 100 mS

Note: D1, ..., Dn, D1', ..., Dn': 0, ..., 9, */T, #;Ln: 0, ..., 9; Fn: F1, ..., F4

-4-

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