W91560DN データシートの表示（PDF） - Winbond

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W91560DN

3-MEMORY TONE/PULSE DIALER WITH RTC AND LCD DISPLAY FUNCTIONS

Winbond 

Preliminary W91560DN SERIES

Pin Description, continued

SYM.

PIN NO.

MODE

12

HFI ,

HFO

25, 10

DP / C6

11

DTMF

6

I/O

FUNCTION

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

Pulling the mode pin to VDD places the dialer in pulse mode (10

ppS, M/B = 2:3).

Floating the mode pin places the dialer in pulse mode (10 ppS, M/B

= 1:2).

I, O Handfree control pins. A low pulse on the HFI input pin toggles

the handfree control state.

Status of the handfree control is listed in the following table:

CURRENT STATE

Hook SW. HFO

NEXT STATE

Input

HFO Dialing

Low HFI

High Yes

On Hook High HFI

Low No

Off Hook High HFI

Low Yes

On Hook

Off Hook Low Yes

Off Hook Low On Hook Low No

Off Hook High On Hook High Yes

HFI pin is pulled to VDD by internal resistor.

Detailed timing diagrams are shown in Figure 4(a), 4(b).

O This pin is a CMOS N-channel open drain output. The flash key will

cause DP to go active in either pulse mode or tone mode. In lock

mode, the DP keeps low for 300 mS during off-hook delay time.

The timing diagram is shown as Figure 1(a), 1(b), 1(c), 1(d).

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

In tone mode, it will output a dual or single tone. The detailed

timing

diagram for tone mode is shown in Figure 2(a), 2(b), 2(c), 2(d).

Output Frequency

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

VLCD

29

O Power supply pin for LCD driver.

A 0.1µF capacitor is connected between VLCD and VSS.

-4-

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