UCC2946: Delay time of WDO output signal of WATCHDOG

Yoshihiro Tanno

Part Number: UCC2946

Hello,
Could you tell me the delay between the edge signal input on the WDI pin and the High signal output from the WDO pin after a reset with WATCHDOG? I would like to know the average delay time and the maximum delay time.　

Thanks

over 2 years ago

0 Jesse Villanueva over 2 years ago

TI__Mastermind 20300 points

Hi Yoshihiro,

Thank you for your question, just for clarification, you are asking for the timing that is highlighted in the image below?

For that section the timing behavior is stated below.

The only expected delay is the propagation delay which should be 120μs.

Jesse

0 Yoshihiro Tanno over 2 years ago in reply to Jesse Villanueva

Prodigy 10 points

Hi Jesse,

Thank you for your reply quickly.

you are asking for the timing that is highlighted in the image below?
-> No, The perception is a little different.

I would like to know the time from the input of the red-circled edge signal to WDI to the output of the blue-circled edge signal by WDO.

Thanks a lot

0 Yoshihiro Tanno over 2 years ago in reply to Yoshihiro Tanno

Prodigy 10 points

My apologies. The diagram was not late. We will send it.

0 Yoshihiro Tanno over 2 years ago

Prodigy 10 points

Hi Jesse,

I have not received an answer to my inquiry.

Could you please give me an answer to the query I have previously illustrated?

I would like to know the time from the input of the red-circled edge signal to WDI to the output of the blue-circled edge signal by WDO.

Thanks

0 Jesse Villanueva over 2 years ago in reply to Yoshihiro Tanno

TI__Mastermind 20300 points

Hi Yoshihiro,

Just to clarify, you want the time when it is okay to input an edge on the WDI after the WDO de-asserts?

The time that you need is dependent on the discharge time of the capacitor on the WP pin plus an additional 30% as buffer.

Jesse

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UCC2946: Delay time of WDO output signal of WATCHDOG