Xtal speed vs PIC power


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  1. #1
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    I'm comparing two versions of PIC16F1827 and 16LF1827.

    I can't really find "big" differences but some VDD & VDR levels.

    Why would anyone buy a LF model if it is not only for the gain of 0,2V for minimum RAM retention voltage?
    Roger

  2. #2
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    Why would anyone buy a LF model if it is not only for the gain of 0,2V for minimum RAM retention voltage?
    Because some LF versions will work at significantly lower operating voltages.

    Consider something like a PIC18LF2431 which will work at 2V with up to a 4MHz
    oscillator. The non LF version requires 4.2V minimum for any oscillator speed.
    Last edited by Bruce; - 4th January 2010 at 20:05.
    Regards,

    -Bruce
    tech at rentron.com
    http://www.rentron.com

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