NT93403-05 - NOVATEK

NT93403-05 Multi-Feature Phone LSI

NT93403-05X is a CMOS, silicon integrated circuit designed for multi-feature phones. This LSI provides the following functions: one-touch/abbreviated dialing, message function, redial, programmable flash, pause, lock, password, key-in tone, hold, and mute. The device also includes a DTMF generator, on-chip pulse dialer, LCD drive/controller and a 32 kHz watc.

Features

4-bit CMOS n The NT93403-05X is a multi-feature tone/pulse dialer based on a CMOS 4-bit single chip microcomputer with 5120 X 10 bit ROM and 1204 X 4 bit RAM capacity n Built-in LCD driver and direct interface with 16digit LCD display Dialing n Dialing parameters are set by external diodes and the SELECT pin n Built-in high-precision dual-tone multi-frequency (DTMF) generator and on-chip pulse dialer n Switchable tone/pulse dialing n Dialing speeds of 10 or 20 pps and Make/Break Ratio of 40/60 or 33/67 n Normal or Sweden/Denmark modes for number of pulses selectable n Minimum DTMFsignal durati.