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TPL5010: Is it possible to keep the RSTn low forever when Missed Done signal ?

Ken Cheung
Prodigy 10 points
Part Number: TPL5010
Other Parts Discussed in Thread: TPS3852

Can I set something so that I can get the blue color result that I shows in the following picture ?

Is the TPL5010 can meet my requirement ? Or can you suggest another part that can help me to achieve this ? 

Thank you so much!

Regards

Ken

  • 0
    TI__Guru** 111720 points

    Hi Ken,

    Unless we do a manual reset and keep the reset signal HIGH (at DELAY/M_RST pin), otherwise RSTn will not stay LOW forever. 

    In your application, do you need watchdog or timer or both?

  • 0 in reply to Noel Fung
    Prodigy 10 points

    Hi Noel,

    Thank you for your reply.

    I am not sure it is call watchdog or timer.

    I need a component (maybe TPL5010) to monitor the MCU. The MCU will provide a pulse (Done signal) every 5 mins.

    It's output will keep high (or Hi-Z) for normal operation. The output will goes Low (until it's power Off and On) when missed Done signal for MCU.

    Could you please suggest a component for me ?

    Thank you so much!

  • 0 in reply to Ken Cheung
    TI__Guru** 111720 points

    Hi Ken,

    You need a supervisor device, please make a post to the Power Management forum, you can use TPS3852 in the post to ensure your post will route to the power management forum correctly.