Kc89c72 Datasheet Verified

The sound pins (Analog A, B, C) emit high-impedance current waveforms rather than direct line-level signals. To listen to the generated melodies, the outputs are summed through an external mixer. Connecting the individual channels together with resistors allows you to route a unified mono signal directly into a basic audio amplifier IC, such as the Texas Instruments LM386 .

As a clone, the KC89C72's true value lies in its ability to stand in for other chips. It is a confirmed compatible replacement for: kc89c72 datasheet

| 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 | The sound pins (Analog A, B, C) emit

The chip's sound generation is controlled through . Here is a simplified map of these registers: As a clone, the KC89C72's true value lies