SN68090

Speech Controller

December 20, 2000

1

INTRODUCTION

SN68090 is a 90 seconds single chip voice synthesizer IC which contains I/O

pins and a tiny controller. By programming through the tiny controller, user’s

applications including section combination, trigger modes, output status, and

other logic functions can then be easily implemented.

FEATURES

Single power supply 2.4V - 5.1V

Built in a tiny controller

90 seconds voice capacity are provided

Two 4-bit I/O ports and two 4-bit output 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

Built in a dual tone melody generator

Speech/Dual tone melody mixer is provided

Fixed current D/A output is provided to drive external connected transistor

for sound output

Low Voltage Reset