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Author Topic: Whats The Difference Between The ATMEGA328-PU and the ATMEGA328P-PU ????  (Read 1036 times)
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offtherails2010
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« on: July 10, 2012, 11:04:32 am »
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hello & Good-Day to you all !!

I am looking to buy 5 microcontrollers but want the ATMEGA328 but there are two types and i can find any difference in the data sheets about them, please could anyone help me find out the difference ?

There is Either the:

ATMEGA328 PU                     OR:

ATMEGA328P-PU

and i am really struggling to find the list of differences as i did find a webpage that details all the differences (i think there was 4 or 5 differences but cant remember it was so long ago & didnt bookmark the page! )

Please could any of you legendary Arduino Guru's help me with this ???

Many many thanks in advance for any help given !
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wanderson
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« Reply #1 on: July 10, 2012, 11:30:14 am »
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http://arduino.cc/forum/index.php/topic,113679.0.html
http://arduino.cc/forum/index.php/topic,109781.0.html
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« Reply #2 on: July 10, 2012, 11:41:36 am »
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Signature Bytes are different

ATmega328   0x1E 0x95 0x14
ATmega328P 0x1E 0x95 0x0F

328P has some subtle feature differences that most users will not notice.

You can copy a portion of avrdude.conf & make a new part for the 328's, and do the same in boards.txt.
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