How accurate is the internal oscillator ?

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  1. - 13th May 2010, 03:31 #1
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    lilimike
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    I am using a 16F628A.
    I did see the datasheet but I was not sure exactly how to interpret it.

    Even with temperature change as long as there is no drastic change within a few seconds I should still be ok.

    Thank you for the information.

    Mike
  2. - 13th May 2010, 03:43 #2
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    rsocor01
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    The next sentence is from the 16F628A datasheet page 1.

    Precision internal 4 MHz oscillator factory
    calibrated to ±1%
    Check page 153 of the datasheet for the graph "TYPICAL INTERNAL OSCILLATOR FREQUENCY vs. TEMPERATURE, VDD = 5 VOLTS".

    Robert
  3. - 13th May 2010, 06:06 #3
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    yes I see, looking at the graph is more clear.

    Thank you
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