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Handling unused pins

Yashas
Prodigy 160 points

Is there a document listing the recommended approach for all the 144 pins if some of them are not used? Thanks.

Regards,

Yashas

  • 0
    TI__Genius 13810 points

    No. We don't have such a document now. For most of the digital pins, they have internal pull up/down, you can leave them open. Unused FlexRay pins can be left open as well. ADC pins can left open too. Test pin should connect to ground. nRST is better to have a external pull up(1-10k) and filter cap (around 100pF). NPORRST should have a external pull up (1-3k) and filter cap (around 100pF).

    If you are not sure about a certain pin, please post them.

    Regards,

    Haixiao