> Stephen D. Barnes wrote:
> > According to the datasheet for the 18F4320 (DS39599B) the internal
> > oscillator runs at 8MHz.
> > If I am correct, the datasheet tells me that the internal oscillator is
> > not divided by 4 in the way an external timing source would be

Olin wrote:
> I haven't looked at that specific data sheet, but that would be contrary
> to the way the internal oscillator is specified for all the PICs I have
> looked at.  I think it's rather unlikely Microchip made an exception in
> this case.  Check the data sheet again.  Can you quote the specific
> section that says this?
>
> All PICs work on 4 internal Q cycles per instruction cycle, so they would
> need to engage the PLL to produce an internal 32MHz clock.  I find this
> highly unlikely.

Olin,
You are correct. I worded my question improperly and based my question on
misunderstood information.
I meant to say that because the 1 instruction cycle = 4 clock cycles does
this apply to the internal clock as well.
In a previous post by Jan-Erik, he stated, as you have, that that 1
instruction = 4 clock cycle regardless of the clock source. You have
clarified a point I was unsure of (internal osc / ext osc VS 1 instruction
per 4 clock cycles).
Thanks for your help.

Regards,
Stephen D. Barnes

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