SN56340

4-Channel Speech Controller

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INTRODUCTION

SN56340 is a 340 seconds single chip 4-channel voice synthesizer IC which 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.

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FEATURES

Single power supply 2.4V – 5.5V

Built in a tiny controller

340 seconds voice capacity are provided

128*4 bits RAM are provided

ROM Size

Maximum 1024K*10 bits ROM size

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64K program ROM is provided

Readable ROM code data

I/O Ports

Four 4-bit I/O ports P1, P2, P3, P6

The driving/sink current of P3.2 & P3.3 are 8mA/16mA

The IO pins P3.3 can be modulated with 38.5Khz carry signal to implement

IR function.

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

Built in an 8-level volume control Analog Push-Pull Direct Drive circuit.

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

Low Voltage Reset

Built-in WDT function

Built-in Event Mark Function

Ver: 1.0

March 2,2005

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