GENERAL DESCRIPTION
The W91330N series are Si-gate CMOS ICs that provide the necessary signals for tone or pulse dialing. They feature one-key redial, handfree dialing, key tone, redial, and lock functions.

FEATURES
· DTMF/pulse switchable dialer
· 32-digit redial memory
· Pulse-to-tone (*/T) keypad for long distance call operation
· Uses 5 ´ 4 keyboard
· Easy operation with redial, flash, pause, and */T keypads
· Pause, pulse-to-tone (*/T) can be stored as a digit in memory
· 0 or 9 dialing inhibition pin for PABX system or long distance dialing lock out
· Off-hook delay 300 mS in lock mode (DP will keep low for 300 mS low while off hook)
· First key-in delay 300 mS output in lock mode
· Dialing rate (10, 20 ppS ) selected 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