Kc89c72 Datasheet | [extra Quality]

KC89C72 likely behaves similarly to other 8051-derived microcontrollers: compact, widely supported by toolchains, and suitable for simple embedded tasks. For precise electrical specifications, pin mappings, and programming sequences, obtain the official datasheet and device-specific development resources.

: Because of its reliable, distinct sound and simple interface, it is still in production and frequently used in modern slot machine hardware .

: Used as a replacement part for ZX Spectrum, MSX, and Amstrad CPC systems. kc89c72 datasheet

Three independent square-wave tone generators capable of producing distinct pitches. Noise Generator:

) separately, tying them together at a single point (star ground) near the power supply input to avoid digital switching noise corrupting analog sensor readings. : Used as a replacement part for ZX

: Many modern slot machines still utilize this specific chip for sound generation.

| 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 | : Many modern slot machines still utilize this

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