Atmega328P / Atmega328

Official Hardware Nano Family Classic Nano
1

Hi so we want to use ATMEGA328 for serial interface communication. We are choosing Arduino Nano for it. I want to clarify a few things:

  1. Is ATMEGA328 and ATMEGA328P the same? If not, what are the differences?
  2. The product SKU: A000005, has ATMEGA328 or ATMEGA328P inside it? Because some documents have one and some have the other.
  3. Also, if different can you please suggest the different product/part numbers, one having ATEMGA328 and other with ATMEGA328P.
  4. Also, I want the programming files and footprints for these.

Thanks

2

Atmega328/328P/328PA is the almost the same. At least the differences between it won't affect your arduino code.
The Atmega328PB is a different thing, avoid it if you don't definitely know what to do with it.

3

Thanks for this info ...
can you also please clarify if nano has only atmega328 or it also has atmega328p... like in different products?

4

The genuine Arduino Nano has a Atmega328P, at least for current production.

5

Okayy ...
Thank you

6

I don't know much about the genuine boards. Where I live, clones are the most common. Nano clones can have any controller - 328, 328P, 328PA and even atmega168/168P/168PA and 328PB

7

Oh okay.
So now if I get a genuine product, I expect it to have ATMEGA328.
I am just confused and want to check if there is only one Nano Part SKU: A000005 available or there are other genuine parts too available ?

8

Take the note that nowadays there are many different boards available under "Nano" name - classic Nano, Nano Every, Nano IoT 33, Nano ESP32...
The one that has an Atmega328P controller usually referenced as "classic Nano".

9

No, the genuine Arduino Nano (SKU A000005) has a Atmega328P, at least for current production (revision 3.3). There are no other active versions of the genuine Arduino Nano.

By "genuine" I mean a product manufactured and distributed by Arduino S.r.l.

Note that older revisions of the genuine Arduino Nano did use different chips.

What you get from third party manufacturers is unknown.

10

okay understood. Thanks, on the clarification.

11

Why does it matter to you if the nano uses a 328 or 328P?

12

A wise decision. At least you will not get grey hairs because your board will not have a fake/reject CH340 serial-to-usb converter.

13

Yeah , that was something i wanted to know ..if there were major changes and differences ...

14

I still don't understand why it would matter to you. When you select Nano from the board manager it gives you a choice of either the 328P or the old 168

15

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