W91320ALN datasheet(4/19 Pages) WINBOND

Part #	W91320ALN

Description	TONE/PULSE DIALER WITH HANDFREE LOCK AND HOLD FUNCTION

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Manufacturer	WINBOND [Winbond]

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W91320N SERIES

- 4 -

Pin Description, continued

SYMBOL

18-PIN

20-PIN

22-PIN

I/O

FUNCTION

DP / C5

11

13

(12,

W91320LN

only)

14

O

N-channel open drain dialing pulse

output.

Flash key will cause DP to be active in

either tone mode or pulse mode.

The timing diagram for pulse mode is

shown in Figure 1(a, b, c, d).

VDD, VSS

14, 6

16, 6

(16, 7

W91320LN

only)

18, 7

I

Power input pins.

H/P

MUTE

5

(6,

W91320LN

only)

6

O

The H/P MUTE is a conventional

inverter output. During pulse dialing,

flash break, one-key redial break, and

hold period, this output is active high;

otherwise, it remains in low state.

NC

-

15

(W91320LN

only)

17

-

No connection.

DTMF

12

14

(13,

W91320LN

only)

15

O

In pulse mode, this pin remains in low

state at all time.

In the tone mode, it will output a dual or

single tone.

Detailed timing diagram for tone mode

is shown in Figure 2(a, b, c, d).

Specified

Actual

Error %

Output Frequency

R1

R2

R3

R4

C1

C2

C3

697

770

852

941

1209

1336

1477

699

766

848

948

1216

1332

1472

+0.28

-0.52

-0.47

+0.74

+0.57

-0.30

-0.34

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