AVR-Chat

look at the Intel..they have a good application note on crystals used in micrcontroolers..

nangkon wrote:

Thanks for the info!

Is there an instrument (maybe Oscilloscope) to measure
if the cap/crystal combination is ok? And what should
I measure (frequency)?

I really want to learn this so that I can apply the
same technique for other scenario or for other chips.

Anyone can point me to tutorial or web page how to
use cap in general. I can understand resistor, but
cap usage is still like a black magic to me when
I look at different schematics.

thanks



--- In AVR-Chat@yahoogroups.com, Mike Harrison wrote:
> On Thu, 20 Nov 2003 19:44:59 -0000, you wrote:
>
> >I saw a lot of schematics that use 2 capacitors with
> >crystal that is connected to XTAL. Is there a way
> >to determine the appropriate values of capacitors?
> >
> >Do I need to use some equipments to do that? Or is
> >there a general rule somewhere?
> >
> >thanks in advance
>
> 27pf will be OK in most cases



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