The AVR and PIC microcontrollers

[pic16f84]

+advantages +of atmel/avr

why avr using in all application of microcontroller and which the best microcontroller using to design in arm robot
what is all type of avr atmal mc

 

[vdaniel]

Re: avr question

Compared to PIC, the AVR is faster, because its clock is not divided by 4 as in PIC. So 20MHz AVR runs about twice faster, than 40MHz PIC

 

[jiveshgovil]

Re: avr question

why avr using in all application of microcontroller and which the best microcontroller using to design in arm robot
what is all type of avr atmal mc

The Atmel avr and the Microchip PIC are very similar lines of microcontrollers.

advantages of Atmel avr:
Cost. At the moment, the very lowest-price microcontroller available from any manufacturer is the $0.54 Atmel avr ATtiny11 6 MHz FLASH (same price for 8 pin DIP and 8 pin SOIC)(price in singles from Digikey as of 2004-07-06).
Many Atmel avr µcontrollers, like many Microchip PIC µcontrollers, have a built-in 10 bit ADC.
emaste-sandvine says: "One big advantage of avrs is that they are supported by the GNU Compiler Collection (GCC)."

Disadvantages of Atmel avr:
Single source: only available from Atmel.
Speed: maximum clock rate for Atmel avr is 8 MHz (is that right ?). If you need more processing power, you'll have to switch to a different architecture -- Parallax SX at 50 MHz goes a little faster; some 75 MHz ARM chips are available; if you want more than that in a single chip you'll have to go to microprocessor (Motorola and Intel and Zilog and Transmeta are popular).
Power: Atmel avrs have fairly low power, but the TI MSP430 series has the lowest power of any microcontroller.

Common misperceptions: Some people think the fastest Microchip PIC (20 MHz) is faster than the fastest Atmel avr (8 MHz). They are wrong. (FIXME: what sort of benchmark would be fair ?)

 

[Davood Amerion]

avr question

I dont like microchip mc architecture!
because programmer must beware of memory switch in several banks!
it reduce actual processing power of microcontroller.
Avr is much better. I use both of them and i prefer AVR.

Regards,
Davood.

 

[hm_fa_da]

Re: avr question

Hi Dear ,

AVR can run up to 20Mh not 8 Mhs ! , equal to 20 MIPS , enogh fast for most projects .... ,
of course they are better than PICs ,
and now Atmel has produced AVR-32bit architecture , too fast up tp 133 Mhs , and lowest power consumption .... , you can read more from Atmel website ( www.atmel.com )

Regards ,
hm_fa_da.

 

[hr_rezaee]

avr question

Hi
AVR based on risc architecture and has more optimized instructiond set.
you can use AVR mcu to do simple DSP projects.
regards