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16F917 miscalibrated oscillator

 
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mdemuth



Joined: 16 Apr 2007
Posts: 71
Location: Stuttgart, Germany

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16F917 miscalibrated oscillator
PostPosted: Fri Jul 26, 2013 3:38 am     Reply with quote
Hello there.
I have programmed a serie of about 100 pieces 16F917.
But one single one seems to have a miscalibrated internal oscillator (simple delay_ms() function shows this clearly, this particular one is 20% to slow).
PICKIT2 has a function to auto-calibrate the internal oscillator, so no problem.
But I realized this function is not available for this particular chip.

Is this a problem of the chip or the PICKIT2 programmer software?

Michael
asmboy



Joined: 20 Nov 2007
Posts: 2128
Location: albany ny

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PostPosted: Fri Jul 26, 2013 6:53 am     Reply with quote
if it is 1 in 100 and the 99 are within 2%

then it has to be the chip.
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