Igor Pokorny wrote :

> Hello Jan-Erik,
>
> I use crystal resonators...

OK, but AFAIK,
a "crystal" is a (quartz) crystal and
a "resonator" is a (ceramic) resonator and
they are not the same thing at all. That's why I asked.

Now, did you build the Wisp from a kit from Wouter ?
Or did you made your own design ?

> Both chips are not able to work with a crystal above 12 MHz.

In the Wisp deisgn ? Or in some other circuit ?

> I suspect the second one was signed for frequency 20 MHz
> by a mistake..

*Highly* unlikely ! Where did you get them from ?

And this is non-"A" 628's, right ? Funny you didn't get the A
versions, they have been out for quite some time now.

Jan-Erik.

--
http://www.piclist.com hint: To leave the PICList
mailto:piclist-unsubscribe-request@mitvma.mit.edu