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08/22/12 23:28
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#188128 - AT89S8253 Oscillator
I understand the oscillator on the AT89S8253 is a bit different from the rest of the AT89S line. I notice that the data sheet calls for lower value burden caps...10pF +/-5pF whereas most other AT89S chips call for 30pF +/-10pF for the burden caps.

Just how critical is this? Has anyone ever tested an S8253 with values around 33pF? What were your results?

I've been working with the S8253 for about 8 months now. On a bread board with 10pF burden caps on a 12MHz xtal I don't experience any oscillator start up issues.

List of 5 messages in thread
AT89S8253 Oscillator      Jon Wilder      08/22/12 23:28      
   Test for Crystal margin      Jim Granville      08/23/12 02:48      
   Breadboard      Michael Karas      08/23/12 06:12      
      and      Erik Malund      08/23/12 07:12      
         The ones I have, for which I have the mfg's spec's ...      Richard Erlacher      08/23/12 10:01      

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