TPL5010: DONE pin explanation

Joaquin Fernandez

Part Number: TPL5010

Dear TI support,

I have one questions about datasheet of TPL5010.

In section "8.3.2 DONE" it can be read: "The DONE signal resets the counter of the watchdog only.". I thought, incorrectly, that each time the DONE signal was asserted, the counter started again from zero, but Figure 8 say the opposite. Time "tip" (the counter?) does not re-start after DONE assertion, could you please explain what that phrase means?

Thank you.

Best regards

Joaquin.

5 months ago

+1 Noel Fung 5 months ago

TI__Guru* 90770 points

Hi Joaquin,

I think the confusion comes from "counter" and "timer".

Timer sets the time interval, tip.

Counter is part of the watchdog building block, which I believe is used to trigger RSTn if it was not reset within tip-20ms.

0 Joaquin Fernandez 5 months ago in reply to Noel Fung

Prodigy 10 points

Thank you for your answer. It would be useful to add some text in the datasheet clarifying that point, describing in more detail the relationship (or differences) between timer and counter.

Clock & timing

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TPL5010: DONE pin explanation