W91473 Datasheet, PDF (1/20 Pages) Winbond – 14-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE AND LOCK FUNCTION

W91473 SERIES
14-MEMORY TONE/PULSE SWITCHABLE DIALER
WITH HANDFREE AND LOCK FUNCTIONS
GENERAL DESCRIPTION
The W91473 series are Si-gate CMOS IC tone/pulse switchable dialers containing a 14-channel
automatic dialing memory, including a 16-digit × 3 emergency dialing memory and a 16-digit × 10
channel repertory memory that provides a 32-digit mercury memory. These dialers also provide flash,
clear, hold, lock, and one-key redial functions.
FEATURES
• DTMF/Pulse switchable dialer
• 32-digit LNB (last number buffer) memory
• 32-digit mercury memory
• 16-digit × 3 one-touch direct repertory memory
• 16-digit × 10 direct repertory memory
• Uses 7 × 5 keyboard
• Flash time: 98 mS, 305 mS, or 600 mS (selectable by keypad option)
• Minimum tone output duration: 93 mS
• Minimum intertone pause: 93 mS
• On-chip power-on reset
• Uses 3.579545 MHz crystal or ceramic resonator
• Packaged in 22, 24, or 28-pin plastic DIP
• The different dialers in the W91473 series are shown in the following table:
TYPE NO.
W91473
W91473L
W91473A
W91473AL
W91473B
W91473BL
W91473C
W91473CL
W91473D
W91473DL
PULSE
(ppS)
10
10
10
10
10/20
10/20
10/20
10/20
10
10
MEMORY
14
14
14
14
14
14
14
14
14
14
MERCURY
MEMORY
Yes
-
Yes
-
Yes
Yes
Save Memory
Save Memory
Save Memory
Save Memory
HOLD
Yes
-
Yes
-
Yes
Yes
Yes
Yes
-
-
HANDFREE
-
-
Yes
Yes
Yes
Yes
Yes
Yes
-
-
LOCK
-
Yes
-
Yes
-
Yes
-
Yes
-
Yes
PACKAGE
22
22
24
24
28
28
28
28
22
22
Publication Release Date: February 1995
-1-
Revision A3