Kc89c72 Datasheet < RECOMMENDED >

This article serves as an — combining available public data, pinout diagrams, electrical characteristics, and application notes — for anyone who needs the critical information typically found in a KC89C72 datasheet. Part 1: What is the KC89C72? The KC89C72 is a 3-voice programmable sound generator (PSG) IC. It was manufactured by Microchip Technology (after acquiring GI’s semiconductor division) and also under license by other vendors like GoldStar (now LG) and UMC .

A: Start with a Google search for “kc89c72 datasheet PDF”. The top results often include Alldatasheet and Datasheet4U. Be careful of subscription walls — many sites offer free previews. Conclusion The kc89c72 datasheet is more than just a pinout diagram — it is the key to unlocking the capabilities of a classic sound chip that defined an era of computing and gaming. Whether you are repairing a vintage arcade board, building a chiptune synthesizer, or learning about retro hardware programming, the KC89C72 remains a relevant and rewarding component. kc89c72 datasheet

The datasheet provides frequency calculation formulas: [ \textTone Period = \frac\textClock Frequency16 \times \textDesired Frequency - 1 ] Q: Is the KC89C72 still in production? A: No. It has been obsolete since the late 1990s. Only NOS (new old stock) or used pulls are available on eBay or surplus electronics sites. This article serves as an — combining available

A: Tie both directly to GND for normal operation. Leaving them floating may cause erratic behavior. It was manufactured by Microchip Technology (after acquiring

| Register | Function | |----------|-----------------------------------------------| | R0 | Tone A period (fine, bits 0–7) | | R1 | Tone A period (coarse, bits 8–11) | | R2 | Tone B period (fine) | | R3 | Tone B period (coarse) | | R4 | Tone C period (fine) | | R5 | Tone C period (coarse) | | R6 | Noise period (5-bit, bits 0–4) | | R7 | Mixer control (enable/disable tone/noise) | | R8 | Amplitude A (16 levels or envelope) | | R9 | Amplitude B | | R10 | Amplitude C | | R11 | Envelope period (fine) | | R12 | Envelope period (coarse) | | R13 | Envelope shape (attack/decay/cycle) | | R14 | I/O Port A data | | R15 | I/O Port B data |