SNC20AS

Direct Drive Speech Controller

Ver: 0.3

Sept 20, 2007

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INTRODUCTION

SNC20AS is a single channel voice synthesizer IC with PWM direct drive circuit. It

built-in a 4-bit tiny controller with six I/O pins. By programming through the tiny

controller in SNC20AS, user’s varied applications including voice section combination,

key trigger arrangement, output control, and other logic functions can be easily

implemented.

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FEATURES

Single power supply 2.4V – 5.5V

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

Built in a 4-bit tiny controller

Where P3.2, P3.3 can direct drive LED (8mA for driving, 16mA for sink)

Six I/O pins are provided (P3.0~P3.3, P2.0, P2.1)

48*4 bits RAM are provided

256K*10 ROM size are provided for voice data and program

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

8-level volume control for PWM Direct Drive output

System clock: 2MHz

Low Power Detect