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About

The popularmicrocontrollers.com website provides information about popular microcontrollers with emphasis on AVR Microcontrollers. The AVR is a Modified Harvard architecture (program and data are stored in separate memory spaces) 8-bit RISC single chip microcontroller (µC) developed by Atmel in 1996. The AVR was also one of the first microcontroller families to use on-chip flash memory for program storage.


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Popular Microcontrollers web site aims to promote the use of AVR and other popular types of microcontrollers and also provides an overview of the resources related to the AVR microcontrollers from Atmel. Popular Microcontrollers web site is not operated by or in conjunction with Atmel corporation.

 


AVR Microcontrollers


High Performance

ATMega
  • True RISC architecture
  • True single cycle execution
  • One MIPS per MHz
  • 32 general purpose registers
  • Harvard architecture

With only a one-stage pipeline, the AVR® brings fast, single-clock-cycle-per-instruction execution to the table - just as you would expect from any true RISC architecture machine.

AVR Flash microcontrollers operate with clock rates up to 20 MHz, achieving close to 20 MIPS. With 32 general purpose registers, the AVR delivers unmatched performance and flexibility, especially when you program in high-level languages, like C, Pascal or Basic.

Low Power Consumption

  • 1.8 to 5.5V operation
  • A variety of sleep modes
  • Fast wake-up from sleep modes
  • Single cycle and high code density
  • Software controlled frequency

A wide operating range ensures great flexibility when it comes to power supplies. For your battery application, the AVR can start on a fresh set of batteries and run until they are completely flat!

AVR Flash microcontrollers have up to six different sleep modes. This assures that between real-time events the better part of the AVR does not consume power while ensuring the fastest possible wake-up time even when using an external crystal. Software controlled frequency makes it possible to use maximum speed when needed, saving power the rest of the time.

High code density ensures that a minimum of instructions and clock cycles are needed to execute a task, thereby reducing the power consumption significantly.

Scalable

  • Variety of pin counts
  • Large device range
  • Pin/feature compatible families
  • Full code compatibility
  • One set of development tools

Wouldn't it be nice to start with a device - and if you need less or more code space - just replace it with a sibling from the same family?

AVR® Flash microcontrollers - a large family of processors that share a single core architecture. This makes it easy to reuse code in your next project, and the one after that! With devices handling from 1 Kbyte to 256 Kbyte of code and packages with 8 to 100 pins, your projects have the building blocks they need.

And did we mention? You use the same development tools for all AVR microcontrollers...

In-system Development

  • In-System Programming
  • On-Chip Debugging
  • In-system verification

Using AVR Flash microcontrollers you can reduce your time to market. The device is its own emulator which ensures actual behavior and electrical characteristics. You will have all resources available while debugging, and it is available on the tiniest 8-pin parts to the large 100-pin devices.

Lock-bits protect your code from being inappropriately read or copied. Using any existing communication interface, the AVR devices also support self-programming, allowing them to upgrade their own firmware.

Development Tools

  • Starter Kits
  • Free AVR Studio
  • Evaluation Boards
  • Emulators
  • On-chip Debuggers
  • Third-party Vendors

There is only one tool chain to learn for the whole range of AVR® Flash microcontrollers! The completely free AVR Studio, front-end assembler and simulator, starter kits, and in-circuit-emulators have all been created to deliver more functionality... for less.

Support

  • Updated product web
  • Support mail handled by AVR experts
  • FAQs
  • Consultants
  • Application notes
  • Reference designs
  • AVRfreaks community website

Although the AVR Flash microcontrollers are easy to use, you might need a helping hand sometime. Rest assure, Atmel's AVR experts will answer your support mail and help your project reach its goal! A frequently updated product website, application notes for your most common tasks, reference designs - their all available for you here on www.atmel.com. Discuss relevant issues with other truly devoted AVR fans on AVRfreaks community website.

Summary

  • High Performance
  • High code density
  • High Integration
  • Low power consumption
  • Outstanding memory technology

AVR Flash microcontrollers are designed to reduce development time, time to market and production costs. Atmel makes the leading 8-bit microcontroller, offering high performance, low power consumption, high code density, Flash program memory, and high integration!