SN66040B

4-Channel Speech Controller

1 INTRODUCTION

SN66040B is a 40 seconds single chip 4-channel voice synthesizer IC that

contains I/O pins and a tiny controller. By programming through the tiny controller,

users’ applications including section combination, trigger modes, output status,

high performance melody, multiple voices, and other logic functions can be

implemented.

2 FEATURES

Single power supply 2.4V – 5.1V

Built in a tiny controller

40 seconds voice capacity are provided

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

128*4 bits RAM are provided

Maximum 64k program ROM is provided

Readable ROM code data

Built in a high quality speech synthesizer

Four independent voice channels

Adaptive playing speed from 4k-40kHz is provided for all 4 channels

individually

Automatic repetition for every channel

A 6-bit*8-bit Multiplier is embed to modulate the volume of synthesized voices

Two digital mixers (with saturation control) are provided

Two 8-bit current output DA converters (Channel 1 + Channel 2

→ DA1,

Channel 3 + Channel 4

→ DA2 )

System clock: 2M Hz ( RC-type or Crystal Option)

Low Voltage Reset

Ver: 1.1

December 6, 2004

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