8255 IP
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Programmable Peripheral Interface
- 24 programmable I/O lines.
- 8-bit bidirectional data bus with standard microprocessor interface controls.
- Three Modes of operation:
- Mode 0: Basic Input/Output:
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Programmable Peripheral Interface
- Compatible with industry standard 8255
- 24 I/O lines individually programmed in 2 groups of 12:
- 3 major modes of operation
- Control Word Read-Back Capability