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Topic: Whats The Difference Between The ATMEGA328-PU and the ATMEGA328P-PU ???? (Read 3609 times) previous topic - next topic


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:


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 !
Si Vis Pacem, Para bellum
 ~  Publius Flavius Vegetius Renatus's


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.
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

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