Programming and Customizing the AVR Microcontroller 
| "The AVRs are a family of RISC microcontrollers from Atmel (NASDAQ symbol: ATML).
The AVR basic architecture was conceived by two students at the Norwegian Institute of Technology (NTH) Alf-Egil Bogen and Vegard Wollan. The internal architecture was further developed by Alf and Vergard at Atmel Norway, a subsidiary of Atmel founded by the two architects. |
The acronym AVR has been reported to stand for Advanced Virtual RISC, but it has also been rumoured to stand for the initials chip's designers: Alf and Vegard [RISC].Note that the use of "AVR" in this article generally refers to the 8-bit RISC line of Atmel AVR Microcontrollers.
The AVR is a Harvard architecture machine with programs and data stored separately. Typical Harvard type machines store their programs in permanent or semi-permanent memory and data in volatile memory. Hence, they are ideal for embedded systems in the field, since the program memory is protected from voltage spikes and other harsh environmental factors that might corrupt the program.
Flash, EEPROM, and SRAM are all integrated onto a single chip, removing the need for external memory (though still available on some devices).
Three Basic Families
AVRs are generally classified into three broad groups:
TinyAVRs 1-8kB program memory 8-20 pin package Limited peripheral set
MegaAVRs 4-256kB program memory 28-100 pin package Extended instruction set (Multiply instructions and instructions for handling larger program memories) Extensive peripheral set
Application specific AVRs megaAVRs with special features not found on the other members of the AVR family, such as LCD controller, USB controller, advanced PWM etc."
Information found at: Wikipedia
More AVR Microcontroller Books, Information, Projects and more:
AVR Microcontroller
Dear AVR Microcontroller Enthusiasts,I am writing to you in behalf of your Heavenly Father. He is seeking you like a lost sheep. You remember the Bible story? It is about a shepherd who has 100 sheep. But when he brings the sheep home one night, one is missing. He then leaves the 99 sheep and goes out into the wilderness until he finds that lost sheep.
In this parable the shepherd goes out to search for the one lost sheep-the very least that can be numbered. So if there had been but one lost soul, Christ would have died for that one. To read more click Lost Sheep
Susan Dietel
Web Programmer
Email:
susansdesign@yahoo.com
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