What is Atmel AVR?

Do you have a question? Post it now! No Registration Necessary

Translate This Thread From English to

Threaded View
What is the difference between the AVR series MCU and other standard MCU
from Atmel? What is so special about the AVR?

Re: What is Atmel AVR?

Quoted text here. Click to load it
look at atmel.com

Re: What is Atmel AVR?

Quoted text here. Click to load it

Nothing special. But AVR is their own 8 bit RISC architecture.Just take a
look at the description of the at90S8515.

But they also sell CPU's based on the 8051 (8 bit CISC - AT89) or ARM (32bit
RISC AT91). And there is a product line with 4 bit.



Re: What is Atmel AVR?

Quoted text here. Click to load it

Others have answered the "difference" question. WRT the "special"

- The instruction clock is 1:1 with the oscillator. Some other micros
require four oscillator cycles for each instruction clock cycle. Some
even require twelve.

- To go along with that, many frequently used instructions execute in a
single instruction cycle, which results in a relatively fast chip.

- The processor register bank consists of 32 8-bit registers. There is
some split in functionality (e.g., only registers 16 - 31 can use
"immediate" instructions, like a literal load).

- It's a Harvard architecture with linear addressing up to 64 KB for
both program and data address space. No banks or paging.

- In-system programmable with inexpensive (or even build-your-own)
serial programmers.

Rich Webb   Norfolk, VA

Site Timeline