The Infineon TriCore provides an Interrupt System with a high safety standard. This document contains some instructions on how to initiate an Interrupt from an external device. First it will show you how to trigger an Interrupt Service Request by an impulse on Port 0 or Port 1. Then in the second part of the document you can find hints how to debounce impulses to enable the use of a simple switch as input device. Authors: Thomas Bliem, CQ Nguyen / Infineon SMI MD Apps