On Sat, 24 Aug 2002 09:00:21 -0400, you wrote:

>On Sat, Aug 24, 2002 at 10:38:31AM +0200, Jan Malina wrote:
>> Been looking at pics mostly for microcontroler work, but i stumbled =
accros
>> the atmel ones, and i wonder, what are the strong/weak points of them
>> compared to the PIC microcontrolers? as they do seem cheaper...
>
>I'll take a crack:
>
>AVR Pros
>--------
>* Cost effective
>* No paging/banking issues
>* Flash based w/ simple programming hardware
>* Industry standard Intel 8051 ISA
>* Reasonable program memory, I/O, and RAm resources
>* Truly free unlimited use/resources C compiler
Uart TX and RX can be enabled seperately
UART can do high baudrates at low clocks
>AVR Cons
>--------
>* Perception of lack of availabilty. It was a reality in the past so it =
had
>  a kernel of truth. Probably scared off a lot of developers =
permanently.
High power consumption at 5V
Non-consistent interrupt response time (can be a problem with timer
ints)
EEPROM can get corrupted in brownout
Lower output drive than PICs
Inconsistent skip/branck instructions (some times you use skips,
sometimes you use branches, and they can only branch +/-128 bytes,
leading to spaghetti code...)
No immediate XOR
Will not wake from sleep on an edge (needs input held til CPU wakes
up)

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