W91444G Winbond, W91444G Datasheet
![no-image](/images/manufacturer_photos/0/7/712/winbond_sml.jpg)
W91444G
Manufacturer Part Number
W91444G
Description
Manufacturer
Winbond
Datasheet
1.W91444G.pdf
(14 pages)
Specifications of W91444G
Case
DIP
Date_code
1994
GENERAL DESCRIPTION
The W91440N series are Si-gate CMOS ICs that provide the necessary signals for either tone or
pulse dialing. The W91440N series features save memory and a 10 by 16 digit automatic dialing
memory.
FEATURES
DTMF/pulse switchable dialer
Two by 32 digit redial and save memory
Ten by 16 digit two-touch direct memory
Redial memory cascadable with normal dialing; dialing length is unlimited, but if length
oversteps 32 digits the redial function is inhibited
Pulse-to-tone (*/T) keypad for long distance call operation
Uses 5
Easy operation with redial, flash, pause and */T keypads
Flash, pause, P T (Pulse-to-tone) can be stored as a digit in memory
Dialing rate (10, 20 ppS ) selected by bonding option
On-hook debounce time: 150 msec.
Minimum tone output duration: 93 msec.
Minimum intertone pause: 93 msec.
Flash break time (73, 100, 300, 600 msec.) selectable by keypad, and the pause time is 1 sec.
On-chip power-on reset
Uses 3.579545 MHz crystal or ceramic resonator
Packaged in 18-pin plastic DIP
The different dialers in the W91440N series are shown in the following table:
W91442N
W91443N
TYPE NO.
5 keyboard
W91442
W91443
W91444
W91446
W91447
W91444G
W91445G
W91443
REPLACEMENT
TYPE NO.
10-MEMORY TONE/PULSE DIALER
PULSE
(ppS)
10
20
- 1 -
600/300/73/100
600/300/73/100
WITH SAVE FUNCTION
FLASH
(mS)
Publication Release Date: May 1997
W91440N SERIES
PAUSE
(S)
3.6
3.6
Revision A3
M/B
Pin
Pin