W91310 查看數據表（PDF） - Winbond

零件编号

产品描述 (功能)

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W91310

TONE/PULSE DIALER WITH REDIAL FUNCTION

Winbond 

PIN CONFIGURATION

W91310 SERIES

C1

1

C2

2

C3

3

C4

4

B/M

5

VSS

6

XT

7

XT

8

T/P MUTE

9

18

R4

17

R3

16

R2

15

R1

14

VDD

13

MODE

12

DTMF

11

DP

10

HKS

PIN DESCRIPTION

SYMBOL

Column-

Row Inputs

PIN

1−4

&

15−18

XT, XT

7, 8

T/P MUTE

9

MODE

13

HKS

10

I/O

FUNCTION

I The keyboard input may be from either the standard 4 × 4 keyboard

or an inexpensive single contact (form A) keyboard. Electronic

input from a µC can also be used. A valid key entry is defined as a

single row being connected to a single column.

I, O A built-in inverter provides oscillation with an inexpensive

3.579545 MHz crystal or ceramic resonator.

O The T/P MUTE is a conventional CMOS N-channel open drain

output. The output transistor is switched on during pulse and tone

mode dialing sequence and flash break. Otherwise, it is switched

off.

I Pulling mode pin to VSS places the dialer in tone mode. Pulling

mode pin to VDD places the dialer in pulse mode (10 ppS). Leaving

mode pin floating places the dialer in pulse mode (20 ppS).

I Hook switch input. HKS = 1: On-hook state. Chip in sleeping mode,

no operation. HKS = 0: Off-hook state. Chip enabled for normal

operation. The HKS pin is pulled to VDD by an internal resistor.

-2-

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