Temperature sensing PIC16 and PIC12 chips


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  1. #1
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    Default Temperature sensing PIC16 and PIC12 chips

    Hey, did anyone notice that some of the newer PIC16F1xxx and PIC12F1xxx chips (like the PIC12F1822 ) have a temp sensor on their die!? Just noticed it today. Kind of cool I think. Not very precise, but maybe with a little oversampling it could get interesting.

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    The on-board temperature indicator can be used to
    measure the device temperature, which will
    correspond to the temperature in its environment with
    some delay. The indicator is measured using the ADC
    and can be used uncalibrated for coarse temperature
    measurements. For more precise temperature
    measurements, calibration is required to account for
    device parameter variation. Depending on the
    application, calibration measurements at one or two
    temperatures may be required. Since the ADC results
    are dependent on its provided references, the fixed
    references need to be supplied either by using the
    onboard fixed references, or by using a regulated
    supply. Otherwise, the device supply voltage must be
    calculated using the fixed voltage reference.
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    Last edited by ScaleRobotics; - 19th December 2010 at 22:29.
    http://www.scalerobotics.com

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