GENERAL DESCRIPTION
API820G is a tiny-controller-based voice synthesizer IC which contains all the function of API820G series and has an OTP (One Time Programmable) ROM inside.

FEATURES
• API820G – ROM : 64k x 10 bits (21 sec@6K sample rate).
• Single power supply 2.4V ~ 5.5V.
• Port1 and Port2 with wake-up function.
• Power down mode for saving power consumption.
• Single ROM for voice and program data.
• Readable ROM code data.
• One 6-bit timer overflow control.
• Two stacks for subroutine calling.
• Fixed current D/A to drive external connected transistor for audio output.
• Multiple playing sppeeds in 2KHz ~ 32KHz for voice playback.
• 5-bit ASPCM synthesizer.
• Multiple levels of volume control.
• Multiple playing sppeeds in 2KHz ~ 32KHz for voice playback.