SN65031

Two Channels Direct Drive Speech Controller

December 20, 2000

1

INTRODUCTION

SN65031 is a 31 seconds two-channel single chip voice synthesizer IC which

contains a PWM Direct Drive Circuit and fixed current D/A output. There are two

4-bit I/O ports and built in a tiny controller. By programming through the tiny

controller, user’s applications including section combination, trigger modes,

output status, and other logic functions can be easily implemented.

FEATURES

Single power supply 2.4V – 5.1V

31 seconds voice capacity is provided

Built in a tiny controller

Two 4-bit I/O ports are provided

64*4 bits RAM are provided

Maximum 16k program ROM is provided

Readable ROM code data

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

Low Voltage Reset

System clock : 2MHZ