INTRODUCTION
SNC353 is a 1-channel voice synthesizer and dual-tone melody IC with PWM direct drive circuit. It built-in a 4-bit tiny controller with one 4-bit input port and two 4-bit I/O ports. By programming through the tiny controller in SNC353, user’s varied applications including voice section combination, dual-tone melody, key trigger arrangement, output control, and other logic functions can be easily implemented.

FEATURES
♦ Single power supply 2.4V – 5.5V
♦ 20 seconds voice capacity are provided (@6KHZ sample rate)
♦ Built in a 4-bit tiny controller
♦ One 4-bit input port and two 4-bit I/O ports are provided
♦ 128*4 bits RAM are provided
♦ 64K*10 ROM size are provided for voice data and program
♦ Maximum 16k program ROM is provided
♦ Readable ROM code data
♦ IR carrier signal is provided
♦ Built in a high quality speech synthesizer
♦ Adaptive playing speed from 2.5k-20kHz is provided
♦ One voice channel plus Dual-Tone Melody
♦ Built in a PWM Direct Drive circuit and a fixed current D/A output
♦ System clock: 2MHz
♦ Low Power Reset