描述 Description

GENERAL DESCRIPTION
The W91620 series are Si-gate CMOS ICs that provide the signals needed for either pulse or tone dialing. The W91620 series features a ten-channel, 32-digit automatic dialing memory.FEATURES
? DTMF/Pulse switchable dialer
? 32-digit redial memory
? Two-stage redial function
? Ten by 32 digit two-touch indirect repertory memory
? Mixed dialing, cascade dialing allowed
? Pulse-to-tone (P?T) keypad for long distance call operation
? Easy operation with redial, flash, pause and P?T keypads
? Pause, pulse-to-tone (P?T) can be stored as a digit in memory
? Tone output duration: as long as key is depressed or 90 mS minimum
? Minimum intertone pause: 90 mS
? Flash time: 100 mS
? Uses 4 ′ 5 keyboard
? On-chip power-on reset
? Uses 3.579545 MHz crystal or ceramic resonator
? Packaged in 18-pin DIP

特性 Features

? DTMF/Pulse switchable dialer
? 32-digit redial memory
? Two-stage redial function
? Ten by 32 digit two-touch indirect repertory memory
? Mixed dialing, cascade dialing allowed
? Pulse-to-tone (P?T) keypad for long distance call operation
? Easy operation with redial, flash, pause and P?T keypads
? Pause, pulse-to-tone (P?T) can be stored as a digit in memory
? Tone output duration: as long as key is depressed or 90 mS minimum
? Minimum intertone pause: 90 mS
? Flash time: 100 mS
? Uses 4 ′ 5 keyboard
? On-chip power-on reset
? Uses 3.579545 MHz crystal or ceramic resonator
? Packaged in 18-pin DIP?