Kc89c72 Datasheet Work Jun 2026

If you find an original KC89C72, it’s a gem for low-power retro projects. However, software-wise, the YM2149 is easier to source today.

Features an 8-bit A/D converter, 16-bit timers, and 8-bit I/O ports for diverse interfacing.

: 3 mixers that combine tone and noise into separate output channels. kc89c72 datasheet

Note: "KC89C72" appears to be a legacy or less-common microcontroller designation with limited public documentation; where specific datasheet details are unavailable, this article highlights typical features, likely pinouts, usage patterns, and development guidance based on comparable 8-bit microcontrollers (e.g., 89-series/8051 derivatives). Treat exact electrical parameters and timings as illustrative — consult an official KC89C72 datasheet or vendor before hardware designs.

LD A, 0x01 ; Select R1 (Tone A high byte) OUT (0x80), A LD A, 0x02 ; High byte value OUT (0x81), A If you find an original KC89C72, it’s a

: Produce precise square-wave audio frequencies by dividing the master system clock.

: Capable of generating three separate square-wave tones simultaneously. : 3 mixers that combine tone and noise

. While the original 1970s chips powered the iconic sounds of the MSX, Atari ST, and early arcade games like Popeye , the KC89C72 keeps that "chiptune" legacy alive today. The Technical "DNA"

Understanding the KC89C72: Technical Datasheet Guide to the Classic CMOS Programmable Sound Generator The

The Samsung KC89C72 is a 40-pin programmable sound generator featuring three tone generators, an internal noise generator, and 16-level volume control. It is functionally compatible with the AY-3-8910 and YM2149 chips, operating within an extended temperature range of for robust industrial and gaming applications.

The datasheet provides frequency calculation formulas: [ \textTone Period = \frac\textClock Frequency16 \times \textDesired Frequency - 1 ]