Hi All,

I normally use an external oscillator on almost everything I make. I
know it's probably overkill, but they run well and have never let me
down. For what I'm doing, the slight extra cost isn't a problem.

However I'd like to try using the internal oscillator on a project,
and I'm surprised at how much configurability there is. So much so
that I don't know if I'm doing it correctly, and I'd love a double
check.

The chip is the 18f25k22 and I'd like the internal oscillator to run
at 16MHz and use the 4x PLL to get a 64MHz clock. I am working in
MPLAB X with XC8 free. I believe that I need to set the config bits to
INTIO67 to give me the internal oscillator with pins 6 and 7 as I/O.

Then in OSCCON I need to set bits 4:6 to high to select the HFINTOSC at 16M=
Hz.
Finally in the OSCTUNE register I'd need to set bit 6 (PLLEN) high to
enable the PLL.

Does this all make sense?

Thanks!

Josh
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