Interupts

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Discussion in 'Embedded Systems and Microcontrollers' started by Alasttt, Jan 30, 2016.

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  1. Jan 30, 2016 #1
    Alasttt

    Thread Starter Member

    May 13, 2015
    68
    0
    Hi,

    For an AVR, if I set the interrupt to detect a rising edge. How does the uC determine that it has received a rising edge ?, is there some sort of threshold voltage that it uses ?. Likewise for a falling edge,

    Cheers
     
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  2. Jan 30, 2016 #2
    shteii01

    AAC Fanatic!

    Feb 19, 2010
    3,971
    616
    Datasheet.
     
    #2 Reply
  3. Jan 30, 2016 #3
    Papabravo

    Expert

    Feb 24, 2006
    11,137
    2,175
    The circuit is called an edge detector, and they work quite well.
     
    #3 Reply
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