HT6542B ps/2 equivalent, keyboard controller with ps/2.
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High reliability MOS technology 8042-type host interface 6MHz-12MHz operating frequency Communicates with keyboard direct.
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P23/MSCO
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TEST
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P10/KBDI
General purpose input/output pin for AT I/O motherboard. Keyboard dat.
The HT6542B is a keyboard controller developed by Holtek with a 4-bit microprocessor. It is pin-to-pin compatible with Intel 8042 keyboard controller used in IBM PC’s. PC manufacturers need not modify any printed wiring layout when using the HT6542B .
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