Because of the Thanksgiving holiday in the U.S., TI E2E™ design support forum responses may be delayed from November 25 through December 2. Thank you for your patience.

  • State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 65 subscribers
  • Views 121 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

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.

TPS3610: Unused case of WDI pin

Takeshi Sasaki
Expert 4480 points
Part Number: TPS3610

Hi team,

Could you give me comment on following customer questions?

Q1. How to detect enabling/disabling the watchdog timer through WDI pin?

Q2. When disabling the watchdog timer with floating WDI pin, will reset trigger accidentally happen by adding noise on the floating WDI pin?

Q3. Can WDI pin be pulled low or pulled high in order to disable the watchdog timer instead of floating WDI pin?

Best regards,

Takeshi Sasaki

  • 0
    TI__Genius 9375 points

    Hi Takeshi-san,

    Q1. If the WDI pin is high impedance, the watchdog is disabled. In any other case, it is enabled.

    Q2. It depends on the level. WDI recognizes VIL at 0.3xVDD and VIH at 0.7xVDD. The reset should not trigger if it is between these values, but should be left high impedance.

    Q3. No, if it is pulled low or high, it will be recognized as an input and operate as a watchdog.

    Thanks,
    Abhinav.