Acetronics, Last year I worked on a project for almost 4 months trying to get an 18F1320 to operate @ 40 Mhz. and then @ 20 Mhz. with eratic results. After looking at the data sheet I decided to use the 16F88 and have never gone back to the 18F1320. The errata sheets tell all. I ordered parts from DigiKey and they said that they had the latest hardware on hand but after receiving 50 parts of an old revision I gave up ordering from them. I was on the MicroChip forum for about 2 months and found out that they wern't very stable as far as the PLL goes and very sensitive to power supply variations. Like I said after looking at the data sheets of the 2 I decided to go with the 16F88 and haven't looked back yet. LOL

Dave Purola,
N8NTA