On Sun, Aug 04, 2002 at 04:12:55AM -0400, Michael Simpson wrote:
> OK I got this baby to run at 40MHZ.

Cool!

>
> Once you program with HS-PLL option you must shutdown the PIC (Reset wont do
> it)  This allows the PLL to start up.

That seems to match up with my reading in chapter 2 of the datasheet. The
PLL timer is triggered by power up.

>
> Some other observations.
> When using crystals and resonators with PLL option  the caps don't seem to
> make a difference.
>
> In the 18FXX2 manual fig 2.6 does not show the use of caps.  Any one know
> any thing about this.

I always keep it simple. Always use caps with crystals and resonators all the
time unless the datasheet specifically prohibits their use. There is almost
never a situation where using caps cause problems. OTOH leave them out and
your crystal/resonator circuit may not work.

So always put them in and don't worry about it.

Glad you got it working...

BAJ

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