WARNING RC Accuracy Mega 48/88/168 is 10%!

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#1
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Sorry, wrong Forum ! don't know how to delete.

In the first datasheets (befory july 2005) of the mega 48 etc the initial accuracy of the internal RC osc was stated at +/-1% at 3V 25 degr. The first series of the chips were OK. With a recent batch there was a 7% deviation.
The applications -7 different programs!- didn't work anymore.

In the most recent version of the datasheet the accuarcy is 10%!!

So if you are using the 1% feature of the mega's just like we did you can be just as thankful to atmel as we are

Dig Kleppe

Last Edited: Mon. Oct 3, 2005 - 07:18 PM
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Which version of GCC is causing your problem?????

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I think that is not a GCC problem!!! if you are using are asyncronous communication this 10% offset will be a disaster!!!

I recoment you to add a syncronization header to your communications, if you are using so..

Alex

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ARod