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TPL5010: is there anyway to increase TPL5010 RSTn Pulse width 320ms(tRstn)

Part Number: TPL5010

I want to use TPL5010 as a watchdog incase of continous off state of SBC.  I am using only done and rstn pin;done to receive done msg from SBC if it in normal state(ON),whereas rstn pin to  force ON the SBC by pulling pwr_btn of SBC low if done doesnot comes within the set time interval(tIP~10min). However, it seems like pwr_btn pin of SBC must be low for more than 600ms(<5s) to turn on the SBC.

it seems tRstn is factory default, can i increase the Rstn pulse width of TPL5010. Is there any other module(watchdog), i can achieve the time interval like 10minutes and  low pulse reset of more than 600ms.

ps:wake pin is not used,using just as watchdog taking advantage of timer

  • Hi Maka-san,

    To use TPL5010 as a watchdog, WAKE is required otherwise you don't know when to send the DONE signal to keep RSTn output HIGH. 

    The duration of the reset pulse is not configurable, I don't have idea which low power device can extend the duration of a pulse. 

    I came up with an idea to create a longer duration pulse with an addition TPL timer.

    POR time is very short, we can ignore it.