APPLICATION NOTE
AVR042: AVR Hardware Design Considerations
AVR 8-bit Microcontrollers
Features
•
Providing robust supply voltage, digital, and analog
•
Connection of RESET line
•
SPI interface for In-System Programming
•
Using external crystal or ceramic resonator oscillators
Description
This application note has been written to provide answers to some of the questions
and problems faced when starting designs involving Atmel
®
AVR
®
microcontrollers. The application note treats topics that are known to cause
problems. The scope is to provide an introduction to potential design problems
rather than being an exhaustive walk-through of how to design applications using
the AVR microcontrollers. This document is thus a collection of information from
existing Atmel AVR documents, combined with information that is not previously
documented.
It is highly recommended to read the application note
– before initiating a new design, especially if the aim of the design
is a commercial application that needs to meet the requirements of the EMC
directive (or similar directives in countries outside Europe). The application note is
available from the AVR section of the official Atmel website
Atmel-2521M-AVR-Hardware-Design-Considerations_ApplicationNote_092014
