INTRODUCTION

SNC538 is a two-channel voice synthesizer IC with PWM direct drive circuit. It built-in a 4-bit tiny controller with one 4-bit input port, two 4-bit output ports and three 4-bit I/O ports. By programming through the tiny controller in SNC538, user’s varied applications including voice section combination, key trigger arrangement, output control, and other logic functions can be easily implemented.

FEATURES

? Single power supply 2.4V – 5.5V

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

? Built in a 4-bit tiny controller

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

? 128*4 bits RAM are provided

? 40K*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

? Two independent voice channels (Channel 1 + Channel 2→Buo1,Buo2)

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

? System clock : 2MHz

? Low Power Reset