18F26K80 Serial setting sanity check and 4xPLL.

[HenrikOlsson]

I'll admit, I've been sceptical about relying on overclocking for something that is actually being used but I suppose if it works at 96MHz(!) then dialing it back to 80MHz does provide some margin.
Since it's going to end up in a car I'd probably test it at something other than room temperature before banking on the extra instruction cycles. I know you said it did work in the car at 96MHz but at what temperature?

Looking forward to the optimisation thread!

[retepsnikrep]

To be fair it worked ok at 64mhz without any optimisation I'm just being greedy and trying to free up/gain some cycles in advance of other stuff.
I have a heat gun and freeze spray so it's pretty easy to stress it.

It's been working fine in the summer sun for last two days at 80mhz.
30-35C in the car.