IL91210E

TECHNICAL DATA IL91210E Tone/Pulse Dialer High-Performance Silicon-Gate CMOS The IL91210E is a single-chip, silicon gate, CMOS integrated circuit with an on-chip oscillator for a 3.58 MHz crystal or ceramic resonator. It provides dialing pulse (DP) or dual tone multi-frequency (DTMF) dialing. A standard 4x4 matrix keyboard can be used to support either DP or DTMF modes. Up to 32 digits can be saved in the on-chip RAM for reading. In the DTMF mode, minimum tone duration and minimum intertone pause are provided for rapid dialing. Maximum tone duration is dependent upon the key depression time in manual dialing. One touch redial operation Tone/Pulse switchable ORDERING INFORMATION 32-digit capacity for redialing IL91210EN Automatic mixed redialing (last number redial) of pulse to DTMF T = -20° to 70° C A with multiple automatic access pauses PABX auto-pause is 2.2 second DTMF Timing: Manual dialing: minimum duration for bursts and pauses Redialing: calibrated timing Wide operating voltage range: 2 V to 5.5 V Digits dialed manually after redialing are cascadable and stored as additional digits for the next redialing Uses inexpensive ceramic resonator (3.58 MHz) Built-in power up reset circuit Four extra function keys: flash, pause, redial and DP or DTMF mixed dialing Four-by-four (or 2 of 8) keyboard can be used Low standby current Dial Pulse Rate: 10 pps www.DataSheet4U.com PIN ASSIGNMENT ww.DataSheet4U.com IL91210E LOGIC DIAGRAM PIN 11 = GND ...