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8255 IP

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  • Intel 8255A Functional Equivalent Programmable Peripheral Interface
    • The DB8255A Programmable Peripheral Interface core is a full function equivalent to the Intel 8255A / 82C55A and Intersil 82C55A devices.
    • The DB8255A implements a general-purpose I/O interface connecting peripheral equipment to a microprocessor system bus.
    • The core generates 24 programmable I/O lines which are individually programmed in 2 groups of 12 and used in 3 major modes of operation.
    Block Diagram -- Intel 8255A Functional Equivalent Programmable Peripheral Interface
  • 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
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Semiconductor IP