82c54芯片

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www.renesas.com

82C54 Datasheet - Renesas Electronics Corporation

The 82C54 is a programmable interval timer/counter designed for use with microcomputer systems. It is a general purpose, multi-timing element that can be treated as an array of I/O ports in the system software. The 82...

www.farnell.com

82C54 Datasheet - Farnell

The 82C54 is a programmable interval timer/counter designed for use with microcomputer systems. It is a general purpose, multi-timing element that can be treated as an array of I/O ports in the system software. The 82...