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: Two 8-bit general-purpose I/O ports often used for joystick or keyboard interfaces. Programming : Controlled via 16 internal 8-bit registers. Cross-Reference and Equivalents kc89c72 datasheet
The most critical section of any datasheet is the pinout diagram. For the KC89C72, the 28-pin configuration is straightforward. You can find inventory and request quotes through
: The chip uses a bus-based protocol (BDIR and BC1 pins) to receive data, which can be managed via shift registers (like the 74HC595) to save Arduino pins. kc89c72 datasheet