W91574DN Datasheet | Winbond

W91570DN SERIES 23-MEMORY TONE/PULSE DIALER WITH AUTOREDIAL RTC AND LCD DISPLAY FUNCTIONS GENERAL DESCRIPTION The W91570DN series ICs are Si-gate CMOS ICs that provide the signals needed for either pulse or tone dialing. They feature 23 number memories and a 16-digit LCD driver for displaying telephone numbers and calling time. A real time clock is included to display the time of day. The W91570DN series is fabricated using CMOS technology providing good performance in low voltage, low power applications. Features - Three by 32 digits for redial, save and mercury memory - Twenty by 16 digits for one-touch direct or two-touch indirect repertory memory - Uses 6 × 10 keyboard - Pause, Pulse-to-tone (- /T) and flash can be stored as a digit in memory - Minimum tone output duration: 87 m S - Minimum intertone pause: 87 m S - Tone/Pulse mode pin selectable - Make/Break ratio pin selectable - Dialing rate (10 or 20 pp S) pin selectable - Pause time (2.0 or 3.6 Sec)...