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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.