Quote Originally Posted by l_gaminde View Post
I was thinking that there were some pics that I could run on 3.3 for testing
Look at the electrical spec part of the data sheet and it tells you there how fast the PIC can be run at what voltage. Slower the speed the lower the voltage.

But...

If you need the speed and low voltage go with an 18Fer. For example: I run 18F4550 with an external 4 Mhz resonator at 3.~ volts. Using the PLL option it is cranked up to 48Mhz.
Works great when you need to connect to something like a SD card. The whole system can then run at the 3.~ volts at a speed fast enough to get something done.