I had looked diligently for a formula prior to posting here, and found=20
none. If someone can find one, I would appreciate where it is. My=20
reference is "PIC18F2220/2320/4220/4320 Data Sheet", copywrite 2007.=20
Plus current version MPLAB > help > Library source, searched on the web=20
including Microchip Forum. Prehaps I sould have mentioned this at the=20
beginning, but not wanting to do extra verbiage.

I still would be interested in where a formula is published. At the=20
moment, I'm chasing other issues with the prototype, but should be back=20
to this area later today, and will try the suggested. One other=20
approach, could have been to enter the table values into a spreadsheet,=20
graph, and generate a formula.  :)

On 2/21/2011 7:57 AM, Olin Lathrop wrote:
> fred jones wrote:
>   =20
>> What was the purpose of this useless post!!!???
>>     =20
> A lot more than your asking about it.
>
>   =20
>>> Surely they also provided a formula or explained how the clock will
>>> be divided down. They can't put examples for every possible
>>> oscillator value in the datasheet. They are, after all, just
>>> examples. You are expected to use your own brain, whether there
>>> happens to be a example that exactly fits your case or not.
>>>       =20
> This basically tells him to use the formula, which should have been obvio=
us.
>
>
> ********************************************************************
> Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products
> (978) 742-9014.  Gold level PIC consultants since 2000.
>   =20
--=20
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