Programmable interrupt controller: Difference between revisions

Revision as of 03:31, 20 July 2006

Revision as of 06:45, 20 July 2006

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A '''PRogrammableProgrammable IntestruptInterrupt Controller''' ('''PIC''') is a device which allows priority levels to be assigned to its interrupt outputs. When the device has multiple interrupt outputs to assert, it will assert them in the order of their relative priority. Common modes of a PIC include hard priorities, rotating priorities, and cascading priorities. PICs often allow the cascading of their oue. tsoutputs to inputs between each other.

== Common features ==