YM3812 Datasheet – FM Operator – Yamaha ( PDF )

Part Number: YM3812

Function: FM Operator TYPE-LII ( OPL II )

Package: 24 Pin DIP or SOP type

Manufacturer: Yamaha


YM3812 FM Operator


The OPLII ( FM OPERATOR type-LII) is an LSI IC which can be used as a sound generation system for computer apparatus,teletext instruments, etc. The OPLII employs frequency modulation for the melody sounds, and has rhythm sounds very close to those of natural musical instruments, marking it possible to synthesize various tones by software control from a CPU.


YM3812 pinout


1. FM sound generation system for realistic sound
2. Built-in vibrato oscillator/amplitude modulation oscillator ( AM )
3. Composite sine wave speech synthesis also possible
4. 5V single power supply

Reference Site:

1. https://en.wikipedia.org/wiki/Yamaha_YM3812
2. https://www.youtube.com/watch?v=z3DU2mNBa6M&t=10m11s


YM3812 Datasheet PDF Download

YM3812 pdf



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