Kc89c72 Datasheet !link! Jun 2026

Tie the three analog channels together for a mono mix, or separate them into left, center, and right channels for stereo sound.

The KC89C72 behaves identically to its predecessor, featuring that define its global output characteristics.

For those researching alternatives, here is a quick comparison.

This article aims to provide a comprehensive reference for engineers and retro enthusiasts, covering its architecture, key electrical parameters, package types, availability, and practical usage with modern microcontrollers like Arduino. kc89c72 datasheet

A typical price for a single chip ranges from , but it is often sold in bulk or as a component on larger retro gaming PCBs.

: Capable of producing pseudo-random noise pulses, essential for percussion and sound effects.

Inside the KC89C72 chip, you will find a complete sound synthesis system that includes: Tie the three analog channels together for a

For specific pinout diagrams and voltage levels, you can request a PDF copy of the datasheet from specialized distributors such as Jotrin Electronics equivalent replacement parts for this chip? KC89C72 FILFACT/SAMSUNG Memory - Jotrin Electronics

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

Supports full-duplex asynchronous serial communication, essential for debugging via PC serial terminals or interfacing with Bluetooth/Wi-Fi modules. This article aims to provide a comprehensive reference

Selects from distinct wave patterns (e.g., fade-out, attack-decay, triangular loops).

Unlike microcontrollers that support direct crystal connections, the KC89C72 demands an external clock source with TTL signal levels. The clock speed must strictly be maintained between . For historical accuracy, systems like the MSX or ZX Spectrum clock the chip around 1.78 MHz. You can easily build a simple clock generator using a 74HC00 NAND gate RC oscillator circuit or an external crystal oscillator module. 2. Bus State Management

: Combine the outputs of the Tone Generators and the Noise Generator. Each channel can output pure tone, pure noise, or a combined signal.

Standard 40-pin Dual In-line Package ( DIP-40 ). Supply Voltage ( VCCcap V sub cap C cap C end-sub ): Nominal Operating Temperature: Extended industrial range from -40∘Cnegative 40 raised to the composed with power C +105∘Cpositive 105 raised to the composed with power C 2. Pin Configuration and Signal Descriptions

fout=fclock16×Nf sub o u t end-sub equals the fraction with numerator f sub c l o c k end-sub and denominator 16 cross cap N end-fraction Interfacing & Bus Operation Protocol