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User16769744555524169921
User16769744555524169921
Associate II
April 20, 2010
Question

Schmitt Trigger on STM32

  • April 20, 2010
  • 2 replies
  • 1125 views
Posted on April 20, 2010 at 09:55

Schmitt Trigger on STM32

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    2 replies

    John F.
    John F.
    Associate III
    May 17, 2011
    Posted on May 17, 2011 at 13:47

    John F.
    John F.
    Associate III
    May 17, 2011
    Posted on May 17, 2011 at 13:47

    There's at least 100mV uncertainty from the hysterisis alone and I doubt that the thresholds are well defined. Use an external comparator. If you are not fussy about switching levels you could use a CMOS 555 timer powered from the +3.3V STM32 supply. Just tie pins 2 and 6 together and use the output on pin 3.

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