Kc89c72 Datasheet | OFFICIAL |

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

Includes two 8-bit parallel I/O ports, often used for interfacing with joysticks or other peripherals. Microprocessor Interface: kc89c72 datasheet

DIY Synthesizers: Popular among hobbyists for creating Chiptune music using controllers like Arduino or ESP32. Pinout Comparison The KC89C72 is a CMOS Programmable Sound Generator

By the end of this guide, you will have all the critical information found in an official datasheet, plus practical application notes, timing diagrams, and code examples. 16-bit program counter allowing up to 64 KB

Part 5: Typical Application Circuit

A standard circuit from the KC89C72 datasheet connects the chip to a Z80 or 6502 microprocessor using the following scheme:

Datasheet Dive

Memory and addressing model