Datasheet — Kc89c72

: Pulse the bus back to inactive ( 0,0 ), place the payload configuration byte onto the data lines, and assert BC1 = 0 and BDIR = 1 . Cross-Reference & Sourcing Guide

Set BDIR=1, BC1=0 to transfer the configuration value into the latched register location. 3. Audio Mixing Circuitry kc89c72 datasheet

Because the KC89C72 is a direct clone, you should use the General Instrument AY-3-8910 Datasheet for full timing diagrams and electrical characteristics. Key features include: : Pulse the bus back to inactive (

The KC89C72's pin-compatibility and functional equivalence to the AY-3-8910 make it a direct replacement candidate for numerous retro systems: Audio Mixing Circuitry Because the KC89C72 is a

For those researching alternatives, here is a quick comparison.

: Like the original, it includes two 8-bit parallel I/O ports, which were often used in old systems to read joystick inputs or control disk drives.

Supports full-duplex asynchronous serial communication, essential for debugging via PC serial terminals or interfacing with Bluetooth/Wi-Fi modules.