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DTMF/pulse switchable dialer
Two by 32-digit redial and save memory
Pulse-to-tone (*/T) keypad for long distance call operation
Uses 5
脳
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.
W91520N
W91521N
W91520AN
W91521AN
REPLACEMENT
TYPE NO.
W91520
W91521
W91520A
W91521A
PULSE
(ppS)
10
20
10
20
FLASH
(mS)
600/100/300/73
600/100/300/73
600/100/300/73
600/100/300/73
M/B
Pin
Pin
Pin
Pin
HANDFREE
DIALING
-
-
Yes
Yes
PACKAGE
(PINS)
18
18
20
20
-1-
Publication Release Date: May 1997
Revision A3