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Understanding the integrated programmable interrupt controller (IPIC)

Posted: 30 Jun 2009 ?? ?Print Version ?Bookmark and Share

Keywords:MPC5121e? microcontroller? interrupt controller?

The purpose of the integrated programmable interrupt controller (IPIC) is to receive interrupt requests from the peripheral modules of a microcontroller, prioritise these interrupts through the use of various programmable registers, and provide the vector number of the current highest priority pending interrupt.

Generally speaking, most of the interrupts can be individually masked. In some cases an interrupt from a peripheral module can be programmed to cause different types of interrupts (normal, system management, and critical) to the CPU core.

For the purposes of this application note, the MPC5121e is being used as an example.

View the PDF document for more information.





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