W91544AN

W91540N SERIES 10-MEMORY TONE/PULSE DIALER WITH SAVE, KEYTONE, LOCK, AND HANDFREE FUNCTIONS GENERAL DESCRIPTION The W91540N series are tone/pulse switchable telephone dialers with 10 memories, keytone or lock function, and handfree dialing control. These chips are fabricated using Winbond's high-performance CMOS technology and thus offer good performance in low-voltage and low-power operations. FEATURES DTMF/pulse switchable dialer Two by 32-digit redial and save memory Ten by 16 digit two-touch indirect repertory memory Pulse-to-tone (*/T) keypad for long distance call operation Cascaded dialing Uses 5 × 5 keyboard Easy operation with redial, flash, pause, and */T keypads Pause, P→T (pulse-to-tone) can be stored as a digit in memory 0 or 9 dialing inhibition pin for PABX system or long distance dialing lock out Dialing rate (10 ppS or 20 ppS) selected by bonding option Minimum tone output duration: 93 mS (W91544AN: 87 mS) Minimum inte...