INTRODUCTION

SNC21030 is a one-channel voice synthesizer IC with Push-Pull direct drive circuit. It built in a 4-bit tiny controller with three 4-bit I/O ports. By programming through the tiny controller in SNC21030, user’s varied applications including voice section combination, key trigger arrangement, output control, and other logic functions can be easily implemented.

FEATURES

Single power supply 2.4V – 5.5V

System Clock is 2MHz, the instruction cycle is 4us

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

Built in a 4-bit tiny controller

I/O Port

  Three 4-bit I/O ports P1, P2 and P3 are provided

  The driving/sink current of P3.2 & P3.3 is up to 8mA/16mA

  The IO pins P3.3 or P2.3 can be modulated with 38.5Khz carry signal to implement IR function.

  PWM output for IO (P3.0~P3.3)

128*4 bits RAM are provided

Maximum 16k program ROM is provided

96K*10 shared ROM for voice data and program

Readable ROM code data

Built-in one channel High Quality speech synthesizer

Adaptive playing speed from 2.5k-20kHz is provided

Automatic repetition

Support 5-bit ADPCM and 10 bit PCM format

Built in an 8-level volume control Push-Pull Direct Drive circuit output, can directly connected to Speaker for sound output

Push-Pull DAC with 12 bits resolution (Direct Drive)

Event Mark function supported

Low-Voltage Detect circuit

Watch Dog Timer Reset function.