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Crystals
 
Crystals
 
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I keep 4 megHz and 20 meg Hz on hand.  Note that some PICs can do without crystals, but timing is not very accurate.  Check your spec. sheet, some PICs may be able to go to 40 meg Hz.  Note that a couple of capacitors are needed as well.  Ceramic resonators may be used instead.
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I keep 4 megHz and 20 meg Hz on hand.  Note that some PICs can do without crystals, but timing is not very accurate.  Check your spec. sheet, some PICs may be able to go to 40 meg Hz.  Note that a couple of capicators are needed as well.  Ceramic resinoaters ( sp ) may be used instead.
 
*[http://www.sparkfun.com/commerce/product_info.php?products_id=534 Crystal 20MHz]
 
*[http://www.sparkfun.com/commerce/product_info.php?products_id=534 Crystal 20MHz]
 
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