INTRODUCTION
SN67d03 Series is a 3 seconds one-channel single chip voice synthesizer IC which contains a PWM Direct Drive Circuit. There are two IO pins (one input, one IO), which can be configured as two trigger pins, or one trigger and one output. By filling a coding form, users’ applications, including section combination, trigger modes, and different output status, can be easily implemented.

FEATURES
♦ Single power supply 2.4V – 5.1V
♦ 3 seconds voice capacity is provided
♦ 1-bit input port (P1) and 1-bit I/O port (P2) are provided
♦ 16*1 bits RAM are provided
♦ Built in a high quality speech synthesizer
♦ Two different playing rate, 6KHz and 8KHz.
♦ Built in a PWM Direct Drive circuit output BUO1 and BUO2 directly connected to Speaker for sound output
♦ System clock: 2MHZ
♦ Low Voltage Reset