AVR-Chat

Thanks for putting this behind me.  I didn't think it was a problem.  I
only heard this from one person and a Atmel field engineer who thought
he heard it.

I'll probably ask in a couple other forums just to make sure.

Barry


-----Original Message-----
From: Kathy Quinlan [mailto:kat-yahoo@kaqelectronics.dyndns.org] 
Sent: Sunday, March 14, 2004 12:32 AM
Subject: RE: [AVR-Chat] Oscillator Lock?!?!

-----Original Message-----
From: LightYearCS [mailto:lightyearcs@zippnet.net] 
Sent: Sunday, 14 March 2004 10:39 AM
Subject: [AVR-Chat] Oscillator Lock?!?!

Ladies and Gentlemen:

            This is a rumor I heard.  Even a field engineer thinks he
heard of this also.

            It's said that if you use the same values for each of the
capacitors used in the crystal oscillator circuit that sometimes the
oscillator will not start up and remain in a state of lockup.  Has
anyone else heard of this?

ROFLMAO ok the only time the 2 caps are not equal is when you are tuning
the crystal (look at some old 1802 cpu designs, this was common) BUT 99%
of designs these days use EQUAL caps, when caps are needed (some uC's eg
the AT43USB355E does not have external caps as they are internal to the
uC)

I think someone is talking rubbish.

Regards,

Kat.            

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