The datasheet of PIC18F4520 states:
"Standard devices with Enhanced Flash memory, designated with an "F" in the part number (such as PIC18F2420), accommodate an operating VDD range of 4.2V to 5.5V. Low-voltage parts, designated by "LF" (such as PIC18LF2420), function over an extended VDD range of 2.0V to 5.5V."
I was unable to source the "LF" version in small quantities for my prototype. So I ran my test circuit using PIC18F4520 at 3v and the circuit functions well. But since the datasheet states the supply voltage requirement to be atleast 4.5v I would like to know if running PIC18F4520 (F version) at 3v will cause any issues in the long run.
Joe!