INTRODUCTION
SN65042 is a 42 seconds two-channel single chip voice synthesizer IC which contains a PWM Direct Drive Circuit and fixed current D/A output. There are two 4-bit I/O ports and built in a tiny controller. By programming through the tiny controller, user’s applications including section combination, trigger modes, output status, and other logic functions can be easily implemented.

FEATURES
◆ Single power supply 2.4V – 5.1V
◆ 42 seconds voice capacity is provided
◆ Built in a tiny controller
◆ Two 4-bit I/O ports are provided
◆ 64*4 bits RAM are provided
◆ 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
◆ Two independent voice channels (Channel 1 + Channel 2→Buo1,Buo2)
◆ Built in a PWM Direct Drive circuit and a fixed current D/A output
◆ Low Voltage Reset
◆ System clock : 2MHZ