Kc89c72 Datasheet Hot! -
The KC89C72 is a CMOS Programmable Sound Generator (PSG) designed as a direct, 100% software-compatible clone of the classic General Instrument AY-3-8910. Primarily used in vintage arcade machines, slot machines, and home computers, it remains in production today as a reliable alternative for repairs and retro-hardware development. Core Specifications & Features
- 2x 16-bit timers/counters
- 1x full-duplex serial interface (UART)
- 32 programmable I/O lines
with the original AY-3-8910 and its variants, such as the Yamaha YM2149. Because of this interoperability, the KC89C72 datasheet is frequently used as a reference for repairing vintage hardware like: kc89c72 datasheet
When designing with the KC89C72, engineers typically use a range of development tools, including assemblers, compilers, and in-circuit emulators. The microcontroller's popularity has led to the creation of many third-party development boards, libraries, and software frameworks, making it easier to get started with KC89C72-based projects. The KC89C72 is a CMOS Programmable Sound Generator
Note: Always verify that the datasheet you download is for the 28-pin DIP version. Some sellers mistakenly list the KC89C72 as a 40-pin device – that is an error. with the original AY-3-8910 and its variants, such
Recommended Operating Conditions:
- Inactive: BC1=0, BDIR=0 → no operation.
- Write Register: BC1=0, BDIR=1 → data on D0-D7 is written to register selected by A8.
- Read Register: BC1=1, BDIR=0 → selected register’s value is output on D0-D7.
The KC89C72: A Brief Overview