Datasheet - Kc89c72
| 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 |
Introduction When searching for the kc89c72 datasheet , engineers, hobbyists, and procurement specialists are typically looking for a comprehensive technical document covering an integrated circuit (IC) from the 1980s and 1990s era. The KC89C72 is a member of the General Instrument (GI) audio chip family, closely related to the famous AY-3-8910 and its clones (such as the Yamaha YM2149). Understanding its datasheet is essential for retro computing restoration, arcade machine repair, and vintage synthesizer projects. kc89c72 datasheet
A: Yes, in most cases. Both have identical pinouts and register sets. However, check the analog output impedance – the KC89C72 may require different external resistor values. | Parameter | Min | Typ | Max
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: Yes, in most cases
| 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 |