Re: [avr-chat] Multiple IDs in avrdude conf?

[Joerg Wunsch]

Rick Mann <address@hidden> wrote:

>>> If I don't pass 'atmega644a' to GCC, it won't build properly.
>> 
>> Because the ATmega644A is not the same as an ATmega644, but rather an
>> ATmega644P without `P' (picopower).  ...

> Interestingly, the signature for my ATmega644A parts is 0x1e9609,
> same as for the '644 part. The signature for the '644P is 1E 96
> 0A. So I was going with the '644 definition.

That's indeed kind of strange.  The ATmega644A has two UARTs (as the
smaller 324P and 164P always had), while the ATmega644 has only one.
I think that's the major difference.

Sure, it's a drop-in replacement nevertheless, but using the same
device IDs is confusing, for sure.
-- 
cheers, J"org               .-.-.   --... ...--   -.. .  DL8DTL

http://www.sax.de/~joerg/                        NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)