Andy1845c
Active Member
I'm looking at the datasheet for the PIC16f54. it says "Maximum Operation Frequency - 20MHz" - does that mean I could use a 12MHz crystal to get somthing up and running? I'm trying to sub the 16f54 for the 16f84a in the inchworm "Hello World" jumpstart. He's uses a 4MHz crystal, but I don't have one (that I have found so far..) But I do have what I am pretty sure is a 12MHz. How critical are the decoupling cap values?