Hi!
I've chosen the ATmega324P to one of my projects and now that I'm
testing some firmware in it, I have some doubts, which I could not clear
up after doing some research on google and forums.
First datasheet I got was mega324P/V with signature bytes: 0x1e9508.
Then, the next datasheet was mega32pa with signature bytes: 0x1E9508.
Actual datasheet is mega324a/mega324pa. Here the signature bytes are
different: mega324a: 0x1E9515 and mega324pa:0x1e9511.
Automotive version is mega324p-a with signature: 0x1e9508.
Aren't mega324a and mega324pa identical apart from some electrical and
power consumption characteristics?
In avr-libc v1.7.0, there are 2 files:
iom324.h - for the mega324p with signature 0x1e9508
iom324pa.h - for the mega324pa with signature 0x1e9511
I've searched for avr-libc manual on web and on pdf, but they are from
2009 and of course are a little bit outdated. There is only mentioned
the mega324p.
So, can I assume there is no support for mega324a, since there is no
signature compatibility?
Where can I get a summarized information about the differences between
mega324p and mega324pa other than looking throughout the datasheet?
Isn't Atmel confusing this part number thing a little bit?
Thank you.
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