jana1972@centrum.cz wrote 2011-11-05 11:48:

> External oscillator is a crystal 4,00MHz
>

Is it an external osciallator or is it a crystal ??
It can *NOT* be both !

>
> I do not have a schematic

To be clear, you have *only* the header right now, right ?
That is, the header is not connected to any target curcuit ?
Or is the header connected to anything ?

> ANd I do not know how/why I should use "bypass capacitor".
> Can you please explain?

http://en.wikipedia.org/wiki/Decoupling_capacitor


> Thanks
>
>
> L.
>
>
>>
>>>
>>> The header with PIC16f648A - ICD is  connected to ICD3 and powered from=
 ICD3 directly.
>> to do n. 1: search piclist archive for "bypass capacitor"
>>
>> Engineering is made (also) of details: draw a schematic!
>>
>>
>>
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>
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