W91590 Datasheet, PDF (1/20 Pages) Winbond – 24-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE, HOLD AND LOCK FUNCTIONS

W91590 SERIES
24-MEMORY TONE/PULSE SWITCHABLE DIALER
WITH HANDFREE, HOLD AND LOCK FUNCTIONS
GENERAL DESCRIPTION
The W91590 series dialers Si-gate CMOS IC tone/pulse switchable dialers with a 24-channel
automatic dialing memory, including a 16-digit × 3 emergency dialing memory, a 16-digit × 20
channel repertory memory that provides one-touch and three-touch dialing, and a 32-digit mercury
memory. These dialers also provide flash, clear, hold, and one-key redial functions.
FEATURES
• DTMF/Pulse switchable dialer
• 32-digit LNB (last number buffer) memory (both tone and pulse mode)
• 32-digit mercury memory (tone/pulse mode)
• 16-digit × 3 one-touch direct repertory memory (tone/pulse mode)
• 16-digit × 20 direct or indirect repertory memory (tone/pulse mode)
• Uses 9 × 5 keyboard
• Flash time: 98 mS, 305 mS, or 600 mS (selectable by keypad option)
• Pause time: 3.6 sec.
• Pause P→T (pulse-to-tone) can be stored as a digit in memory
• 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 W91590 series are shown in the following table:
TYPE NO. PULSE MEMORY MERCURY HOLD HANDFREE LOCK PACKAGE
(ppS)
MEMORY
FUNCTION
W91590
10
20
-
-
-
-
22
W91590L
10
20
-
-
-
Yes
22
W91590A
10
20
-
-
Yes
-
24
W91590AL 10
20
-
-
Yes
Yes
24
W91590B 10/20
24
Yes
Yes
Yes
-
28
W91590BL 10/20
24
Yes
Yes
Yes
Yes
28
W91590C 10/20
24 Save Memory Yes
Yes
-
28
W91590CL 10/20
24 Save Memory Yes
Yes
Yes
28
Publication Release Date: July 1995
-1-
Revision A3