florinc:
Can I run Arduino on these
I don't think so, at least no easily . You can see the list of "arduino" (or compatible) boards in the menu Tools/Board of Arduino IDE.
What do you mean with "no easily"? I finished this some days ago: http://www.instructables.com/id/Arduino-on-all-sorts-of-Atmels/
alah: With the help of that you should be able to use many different ATtinys /ATmegas etc.
JanD