Watchdog Timer with Stay Low Output

Discussion in 'Embedded Systems and Microcontrollers' started by jmsayles, Jan 17, 2016.

  1. jmsayles

    Thread Starter New Member

    May 21, 2013
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    Does anyone know of an IC that functions like a watchdog timer only with an output that stays low until it is reset rather that pulsing low?
     
  2. MaxHeadRoom

    Expert

    Jul 18, 2013
    10,566
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    555.
    WD timers usually present one state at the occurrence of pulses and will go high or low when alarm out, is this what you need?
    Max.
     
  3. jmsayles

    Thread Starter New Member

    May 21, 2013
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    Yes, but I was hoping to find something in a single IC that does not require all the supporting discretes.
     
  4. sailorjoe

    Member

    Jun 4, 2013
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  5. jmsayles

    Thread Starter New Member

    May 21, 2013
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    Thank you SailorJoe. I have looked through several spec sheets on watchdog timers and have only found ones that pulse low, i.e. send a uC reset signal, rather than just stay low. Basically, I am looking to send a signal to the master controller that this uC has locked up.
     
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