INTRODUCTION

SN52020 is a 20 seconds single chip 2-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.

FEATURES

? Single power supply 2.4V – 5.5V

? Built in a tiny controller

? 20 seconds voice capacity are provided

? 64*4 bits RAM are provided

? ROM Size

? Maximum 64K*10 bits ROM size

- 64K program ROM is provided

? Readable ROM code data

? I/O Ports

- One 4-bit I/O ports P3

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

? Built in a high quality speech synthesizer

? Two independent voice channels

? Adaptive playing speed from 4k-40kHz is provided for all 2 channels individually

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

? One 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