Kc89c72 Datasheet [top] -

| Parameter | Min | Typ | Max | Unit | |----------------------|------|-----|------|------| | Supply Voltage (VCC) | 4.75 | 5.0 | 5.25 | V | | Supply Current (ICC) | - | 15 | 30 | mA | | Clock Frequency | 0.5 | 1.0 | 2.0 | MHz | | Input Low Voltage (VIL) | 0 | - | 0.8 | V | | Input High Voltage (VIH) | 2.0 | - | VCC | V | | Output Low Voltage (VOL @ 1.6mA) | - | 0.4 | 0.5 | V | | Output High Voltage (VOH @ -0.4mA) | 2.4 | - | - | V |

The chip uses a standard 40-pin DIP layout. While the official pinout diagram might be scarce, the KC89C72 is known to have pins that are function-compatible with the and Yamaha YM2149 . It can replace these chips in existing circuits without hardware modification.

This article provides an in-depth look at the , highlighting its features, pinout, and functional characteristics. What is the KC89C72?

| Feature | AY-3-8910 (NMOS) | KC89C72 (CMOS) | YM2149 (Yamaha) | |-------------------------|------------------|------------------|----------------------| | Technology | NMOS | CMOS | NMOS | | Power consumption | ~100 mA | ~15 mA | ~50 mA | | Output type | Open-drain | Push-pull | Push-pull (different voltage swing) | | Pinout | 40-pin DIP | 40-pin DIP | 40-pin DIP, pin-compatible | | Noise generator | Yes | Yes | Yes (different PRNG) | | Envelope shapes | 16 | 16 | 16 | | I/O ports | 8+8 bits | 8+8 bits | 8+8 bits |

: Standard dual in-line package for easy mounting on vintage PCB designs or breadboards. Cross-Compatibility kc89c72 datasheet

Do you need an to interface with it?

To power the KC89C72 correctly:

To set Channel A to middle C (~261 Hz) with a 1 MHz clock:

The KC89C72 remains a for anyone needing programmable sound generation in a 5V logic environment. Its enduring availability—two decades after the original chip was discontinued—is a testament to the lasting value of simple, dependable integrated circuits. | Parameter | Min | Typ | Max

It was historically common in Asian-market slot machines and various MSX-compatible computers due to its reliability and compliance with the 8910 standard. Core Features and Specifications

: Signal levels can be controlled directly by a processor or via an internal envelope generator.

: It is the go-to replacement for repairing vintage Nintendo Popeye and Sky Skipper boards.

Understanding the KC89C72 datasheet is essential for engineering replica hardware, repairing vintage arcade boards, or building custom chiptune synthesizers. Architectural Overview This article provides an in-depth look at the

As of the latest search results, This is typical for "clone" chips. Manufacturers of clones rarely archived their datasheets as meticulously as giants like Texas Instruments or Intel.

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

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.

Three independent, single-ended analog current outputs that require external amplification.