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thilo
Visitor II
May 19, 2003
Question

Floating Interrupt

  • May 19, 2003
  • 3 replies
  • 945 views
Posted on May 19, 2003 at 07:13

Floating Interrupt

    This topic has been closed for replies.

    3 replies

    T
    thiloAuthor
    Visitor II
    May 16, 2003
    Posted on May 16, 2003 at 11:24

    Hello all,

    I have a question: what is the purpose of the floating interrupt input and how can I use them?

    Thanks for your help.

    R
    rolf
    Visitor II
    May 19, 2003
    Posted on May 19, 2003 at 07:08

    Hi Thilo,

    the floating interrupt input is usefull if your signal which is generating this interrupt is for example a TTL of CMOS signal. In that case you don't need an internal pull-up resistor.

    An internal pull-up would cause an additionl current consumption if the external signal is low. Especially during a low-power mode this extra current should be avoided.

    Rolf
    S
    sjo
    Visitor II
    May 19, 2003
    Posted on May 19, 2003 at 07:13

    This give you the option to use a pullup/down resistor of your choice rather than using the builtin pullup resistor.

    Regards

    SJO
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