Atmel AVR1503 XMEGA Programmable Multi-Interrupt Controller Handbook

About this manual

The handbook introduces the Atmel XMEGA Programmable Multi‑level Interrupt Controller (PMIC) and lists the prerequisites for the training, including AVR Studio and the Xplain evaluation board.

It guides the user through three practical tasks: configuring a timer overflow interrupt to blink an LED, exploring high, medium and low interrupt levels, and using the Round‑Robin scheme to prevent low‑level interrupt starvation.

What's inside

• Prerequisites
• Introduction
• Overview
• Task 1: Overflow Interrupt
• Task 2: Interrupt Levels
• Task 3: Round Robin
• Summary
• Resources

Specifications

Frequently asked questions

What are the three interrupt priority levels in the XMEGA PMIC?

The PMIC supports high, medium, and low priority levels.

How can interrupt starvation be avoided for low‑level interrupts?

Enable the Round Robin scheduling scheme for low‑level interrupts.