INTRODUCTION
SN68009 is a 9 seconds single chip voice synthesizer IC which contains I/O pins and a tiny controller. By programming through the tiny controller, user’s applications including section combination, trigger modes, output status, and other logic functions can then be easily implemented.

FEATURES
◆ Single power supply 2.4V - 5.1V
◆ Built in a tiny controller
◆ 9 seconds voice capacity are provided
◆ One 4-bit input port and 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
◆ Built in a dual tone melody generator
◆ Speech/Dual tone melody mixer is provided
◆ Fixed current D/A output is provided to drive external connected transistor for sound output
◆ Low Voltage Reset