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modified on 20 June 2010 at 01:08 ••• 5,026 views

Eagle cpld xio Example

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LCD interfacing using Extended I/O (cpld_xio)

Compatibility Eagle 100

A complex programmable logic device is a programmable logic device with complexity between that of PALs and FPGAs, and architectural features of both. The building block of a CPLD is the macro cell, which contains logic implementing disjunctive normal form expressions and more specialized logic operations.


Input/Output, or I/O, refers to the communication between an information processing system, and the outside world possibly a human, or another information processing system. Inputs are the signals or data received by the system, and outputs are the signals or data sent from it.


A liquid crystal display (LCD) is a thin, flat panel used for electronically displaying information such as text, images, and moving pictures.


This example tests extended I/O and LCD interfaces on CPLD.