Kc89c72 Datasheet -

The following pseudo-code writes a 440 Hz tone (A4) to channel A using a 1 MHz clock:

Since it is a direct replacement for the AY-3-8910, it shares the following technical characteristics: : 3 independent sound channels (A, B, and C). Package : 40-pin DIP (Dual In-line Package). Operating Voltage : Standard +5V DC. Clock Frequency : Typically runs between 1 MHz and 2 MHz. kc89c72 datasheet

Includes 8 KB of Flash memory for code storage and 512 B of SRAM for data processing. The following pseudo-code writes a 440 Hz tone

: Parts should be kept in dry storage cabinets with humidity protection to maintain lead integrity. Clock Frequency : Typically runs between 1 MHz and 2 MHz

Editor’s Note: Documentation on the KC89C72 is sparse in modern databases, as it was primarily produced by now-defunct or merged semiconductor manufacturers (often associated with clones of Western Digital or specific Korean ASIC manufacturers). The technical data below is compiled from legacy hardware manuals and reverse-engineering efforts.