W91521AN Ver la hoja de datos (PDF) - Winbond

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componentes Descripción

Fabricante

W91521AN

TONE/PULSE DIALER WITH HANDFREE AND HOLD FUNCTIONS

Winbond 

W91520N SERIES

TONE/PULSE DIALER WITH HANDFREE

AND HOLD FUNCTIONS

GENERAL DESCRIPTION

The W91520N series are Si-gate CMOS ICs that provide the necessary signals for tone or pulse

dialing. The W91520N series provide one-key redial, handfree dialing, hold, save, and redial

functions.

FEATURES

• DTMF/pulse switchable dialer

• Two by 32-digit redial and save memory

• Pulse-to-tone (*/T) keypad for long distance call operation

• Uses 5 × 5 keyboard

• Easy operation with redial, flash, pause, and */T keypads

• Pause, pulse-to-tone (*/T) can be stored as a digit in memory

• On-hook debounce time: 150 mS

• Dialing rate (10 ppS, or 20 ppS) selectable by bonding option

• Minimum tone output duration: 93 msec.

• Minimum intertone pause: 93 msec.

• Flash break time (73, 100, 300, 600 msec.) selectable by keypad; pause time is 1.0 sec.

• On-chip power-on reset

• Uses 3.579545 MHz crystal or ceramic resonator

• Packaged in 18 or 20-pin plastic DIP

• The different dialers in the W91520N series are shown in the following table:

TYPE NO. REPLACEMENT PULSE

TYPE NO.

(ppS)

FLASH

(mS)

M/B HANDFREE PACKAGE

DIALING

(PINS)

W91520N

W91520

10

600/100/300/73 Pin

-

18

W91521N

W91521

20

600/100/300/73 Pin

-

18

W91520AN W91520A

10

600/100/300/73 Pin

Yes

20

W91521AN W91521A

20

600/100/300/73 Pin

Yes

20

Publication Release Date: May 1997

-1-

Revision A3

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