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About POR_B signal.

Question asked by Takashi Takahashi on Feb 16, 2016
Latest reply on Mar 6, 2016 by Yuri Muhin

Hi community.

 

Our customer has below three questions.The understanding is correct?

 

(1) internal POR_B signal generation circuit detects the two types of supply voltage below.

- VDD_SOC_CAP

- VDD_HIGH_IN

Is it correct?

 

(2) when using common VDD_ARM_IN and VDD_SOC_IN

 

Also VDD_ARM_CAP and VDD_SOC_CAP is to De-assert the external POR_B signal before the operation guarantee voltage reaching, internal POR_B signal is substantially alternative.

Is it correct?

 

(3)As a condition of internal POR_B signal to De-assert,

After VDD_HIGH_IN after stabilization 4 [ms] elapsed, and VDD_SOC_CAP after stabilization 1 [ms] has been described ,

And if  common  of the VDD_HIGH_IN and VDD_SNVS_IN these RTC oscillation stabilization time is added.

Is it correct?

Thanks,

Best.

 

 

 

 

 

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