SNC521

One Channel Direct Drive Speech Controller

Ver: 1.3

August 26, 2003

1

1 INTRODUCTION

SNC521 is a one-channel voice synthesizer IC with PWM direct drive circuit. It

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

controller in SNC521, user’s varied applications including voice section combination,

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

implemented.

2 FEATURES

Single power supply 2.4V – 5.5V

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

Built in a 4-bit tiny controller

Two 4-bit I/O ports are provided

64*4 bits RAM are provided

32K*10 ROM size are provided for voice data and program

Maximum 16k program ROM is provided

IR carrier signal is provided

Built in a high quality speech synthesizer

Adaptive playing speed from 2.5k-20kHz is provided

One voice channel

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

System clock : 2MHz

Low Power Reset