INTRODUCTION

SNC353 is a 1-channel voice synthesizer and dual-tone melody IC with PWM direct drive circuit. It built-in a 4-bit tiny controller with one 4-bit input port and two 4-bit I/O ports. By programming through the tiny controller in SNC353, user’s varied applications including voice section combination, dual-tone melody, key trigger arrangement, output control, and other logic functions can be easily implemented.

FEATURES

? Single power supply 2.4V – 5.5V

? 20 seconds voice capacity are provided (@6KHZ sample rate)

? Built in a 4-bit tiny controller

? One 4-bit input port and two 4-bit I/O ports are provided

? 128*4 bits RAM are provided

? 64K*10 ROM size are provided for voice data and program

? Maximum 16k program ROM is provided

? Readable ROM code data

? IR carrier signal is provided

? Built in a high quality speech synthesizer

? Adaptive playing speed from 2.5k-20kHz is provided

? One voice channel plus Dual-Tone Melody

? Built in a PWM Direct Drive circuit and a fixed current D/A output

? System clock: 2MHz

? Low Power Reset