W91340N Datasheet, PDF (1/15 Pages) Winbond – 10-MEMORY TONE/PULSE DIALER WITH HANDFREE AND HOLD FUNCTION

W91340N SERIES
10-MEMORY TONE/PULSE DIALER WITH
HANDFREE AND HOLD FUNCTIONS
GENERAL DESCRIPTION
The W91340N series are tone/pluse switchable telephone dialers with ten memories, hold function,
and a handfree dialing control circuit. Fabricated using CMOS technology, the W91340N series offer good
performance in low-voltage and low-power applications.
FEATURES
• DTMF/pulse switchable dialer
• 32-digit redial memory
• Ten by 16-digit two-touch direct repertory memory
• Cascaded dialing allowed, with unlimited dialing length
• Pulse-to-tone (*/T) keypad for long distance call operation
• Uses 5 × 4 keyboard
• Easy operation with redial, flash, pause, and */T keypads
• Pause, P→T (pulse-to-tone) can be stored as a digit in memory
• Dialing rate (10 ppS or 20 ppS) is selectable by bonding option
• On-hook debounce time: 150 msec.
• Minimum tone output duration: 93 msec. (W91344AN: 87 mS)
• Minimum intertone pause: 93 msec. (W91344AN: 87 mS)
• Flash break time (73, 100, 300, 600 msec) selectable by keypad; pause time is 1.0 sec.
• Make/break ratio (40:60 or 33.3:66.7) selectable by MODE pin
• 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 W91340N series are shown in the following table:}
TYPE NO.
REPLACEMENT PULSE
TYPE NO.
(ppS)
FLASH
(mS)
M/B HANDFREE PACKAGE
DIALING
(PINS)
W91340N
W91340
10
600/300/73/100 Pin
-
18
W91341
W91342N
W91342
20
600/300/73/100 Pin
-
18
W91340AN
W91340A
10
600/300/73/100 Pin
Yes
20
W91341A
W91342AN
W91342A
20
600/300/73/100 Pin
Yes
20
W91344AN
New type
10
600/300/73/100 Pin
Yes
20
Note: The W91344AN is designed specifically for use in France. The pause time is not added in pulse-to-tone mode.
Publication Release Date: May 1997
-1-
Revision A2