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Originally Posted by ConKbot of Doom
If you are feeling really lucky, they are pin-compatible, and all you would have to do is change the processor definition in the program, and you might be able to desolder a 8520 and replace it with a 8720. that would give you 4x the memory if you could get it to work, however you would lose your warranty, and for some reason I don't think FIRST would like it. So maybe I was wrong earlier, you could get really creative  |
Because the maximum (internal) clock rate of the 18F8720 is 25MHz, you'd have to swap out the crystal/oscillator too.
-Kevin