Hi Jan

Read the data sheet, gee thanks for the tip.

>> Not possible. The data sheet is perfectly clear on this.


The data sheet that I have for the PIC18F45J10 says 20Mhz crystals are 
OK and have been tested with the device.

Table 2-2   page 26

But anyway thanks for taking the time to respond.

Kind Regards
Grant Brown

Jan-Erik Soderholm wrote:
> Grant Brown wrote:
>   
>> Hi list,
>>
>> Starting to use a PIC18F45J10 for the first time.
>>     
>
> Right, start with the datasheet, in particular the chapter
> on the oscillator configurations. It's just a couple
> of pages.
>
>   
>> I have a external 20Mhz crystal as the clock input and wish to run 
>> the device at its maximum speed of 40Mhz
>>     
>
> Not possible. The datasheet is perfectly clear on this.
>
> Jan-Erik.
>   

-- 
Kind Regards
Grant Brown

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