W91214A Datasheet | Winbond

W91210 SERIES TONE/PULSE DIALER WITH REDIAL FUNCTION GENERAL DESCRIPTION The W91210 series are Si-gate CMOS ICs that provide the necessary signals for either pulse or tone dialing. The W91210 series Features a redial function. Features - DTMF/Pulse switchable dialer - One by 32 digits for redial memory - Pulse-to-tone (- /T) keypad for long distance call operation - Uses 4 × 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 - Minimum tone output duration: 87 m S - Minimum intertone pause: 87 m S - Flash time (100 m S, 300 m S or 600 m S) selectable by keypad - Pause time 3.6 sec or 2.0 sec - On-chip power-on reset - Uses 3.579545 MHz crystal or ceramic resonator - Packaged in 16-pin plastic DIP - The different dialers in the W91210 series are described in the following table: TYPE NO. PULSE (pp S) FLASH (m S) PAUSE TIME (S) M/B PULSE-TO-TONE PAUSE TIME W91212 10...