The application note AN54460 explains the interrupt architecture in PSoC® 3 and PSoC 5 and the support for interrupts in the PSoC Creator IDE.
Advanced interrupt concepts such as handling re-entrant functions and optimizing the interrupt code are explained in detail. After reading this application note, you will be able to use PSoC 3 and PSoC 5 interrupts in an efficient way for different applications.
This application note is available at http://www.cypress.com/?rID=38267