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W91542AN Datasheet(PDF) 1 Page - Winbond |
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W91542AN Datasheet(HTML) 1 Page - Winbond |
1 / 19 page W91540N SERIES 10-MEMORY TONE/PULSE DIALER WITH SAVE, KEYTONE, LOCK, AND HANDFREE FUNCTIONS Publication Release Date: May 1997 - 1 - Revision A2 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 intertone pause: 93 mS (W91544AN: 87 mS) • Pause time: 3.6 sec • 300 mS off-hook delay in lock mode (DP remains low for 300 mS while off-hook) • Flash break time (73 mS, 100 mS, 300 mS, or 600 mS) selectable by keypad; pause time is 1.0 S • Make/break ratio (2:3 or 1:2) selectable by Mode pin • Key tone output for valid keypad entry recognition • On-chip power-on reset • Uses 3.579545 MHz crystal or ceramic resonator • Packaged in 18 or 20-pin DIP |
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Similar Description - W91542AN |
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