W91312

W91310 SERIES TONE/PULSE DIALER WITH REDIAL FUNCTION GENERAL DESCRIPTION The W91310 series are monolithic ICs that provide the necessary signals for either pulse or tone dialing. The W91310 series feature a redial memory. FEATURES DTMF/Pulse switchable dialer 32 digits for redial memory Pulse-to-tone (P→T) keypad for long distance call operation Break/Make ratio is selectable by pin option Uses 4 × 4 keyboard Easy operation with redial, flash, pause, and P→T keypads Flash, pause, P→T (pulse-to-tone) can be stored as a digit in memory Minimum tone output duration: 100 mS Minimum intertone pause: 100 mS On-chip power-on reset Uses 3.579545 MHz crystal or ceramic resonator Packaged in 18-pin plastic DIP The different dialers in the W91310 series are shown in the following table: TYPE NO. PULSE (ppS) FLASH (mS) FLASH PAUSE (mS) W91312/A W91314/A W91316 10/20 10/20 10/20 600/300 73/100 600 600/300 140/100 600 PAUSE (S) 2...