• State TI Thinks Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 1 answer
  • Subscribers 63 subscribers
  • Views 185 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

BQ25150: 14 second watchdog

Riccardo Gaiati
Prodigy 70 points
Part Number: BQ25150

Hi,

could you confirm that the 14 second watchdog works only when there is an external power source (VIN) BUT not the first time coming out from Ship Mode ?

In that case, is there another way to have also a watchdog when no VIN is present ?

Thanks in advance !

Kind regards

Riccardo Gaiati

  • 0
    TI__Genius 17585 points

    Hi Riccardo,

    The 14 second HW reset watchdog works upon VIN insertion so it will function for the 14 seconds following a VIN insertion. There isnt really a way to trigger this particular watchdog otherwise.

    There is also a normal watchdog which can be configured to be enabled all the time. This one will run off a timer that resets every time an I2C transaction takes place. Is that what you might be looking for?

    Best Regards.

  • 0 in reply to Juan Ospina
    Prodigy 70 points

    Hi Juan, thanks for the reply.

    1. Will it so work after coming out from Ship Mode due to a proper External Power Supply (VIN) ?

    2. The second watchdog you are mentioning is the 25-50 seconds watchdog, i guess. This one does not seem to perform an hw reset of the host, does it ?

  • 0 in reply to Riccardo Gaiati
    TI__Genius 17585 points

    Hi,

    Riccardo Gaiati said:
    1. Will it so work after coming out from Ship Mode due to a proper External Power Supply (VIN) ?

    It won't work while exiting ship mode. Since a register reset takes place when ship mode is exited, and the default setting is to have the 14-S Timer disabled, it won't be available coming out of start up.

    Riccardo Gaiati said:
    The second watchdog you are mentioning is the 25-50 seconds watchdog, i guess. This one does not seem to perform an hw reset of the host, does it ?

    No, it does not provide a HW reset. The watchdog will reset register values to their default values and generate an INT pulse. 

    Best Regards,

    Juan Ospina