How to measure the power mode transition time?

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How to measure the power mode transition time?

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PYGC
Contributor II

PYGC_0-1676963782570.png

My measurements are larger than the DS results.

  • STOP1->RUN: 0.175us > (0.08us)
  • STOP2->RUN: 0.167us > (0.08us)

 

PYGC_1-1676964302694.pngPYGC_2-1676964351225.png

yellow: wakeup key

blue: core clock

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danielmartynek
NXP TechSupport
NXP TechSupport

Hi @PYGC,

All specifications in Table 11 assume the clock configuration in Table 10.

Also, if you use an input active rising edge as a wakeup source, the port detects Vih_min at (0.65 x VDD), providing the input digital filter is not active.

 

Regards,

Daniel

 

 

 

 

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PYGC
Contributor II

Is my measuring method correct? The start is VDD * 0.65, and the end is that the core clock has output.

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danielmartynek
NXP TechSupport
NXP TechSupport

Hello @PYGC,

What is the frequency of the core clock?

At 48MHz, one cycle is just 20ns.

The error if measurement can be significant.

What is the background of the query?

 

Regards,

Daniel

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