• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 31 subscribers
  • Views 218 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.

AWR1843AOP: Power-on Sequence of Each Power Supply Rails

BK Hyun
Prodigy 30 points
Part Number: AWR1843AOP
Other Parts Discussed in Thread: LP87524J-Q1

Tool/software:

I need to know the power-on sequece specification of each power supply rails of AWR1843AOP.

Next waveform is the power-on sequce of my AWR1843AOP board using PMIC LP87524J-Q1.

LP87524 is using default register settings.

However, above sequence doesn't look like to satisfiy the wake-up sequence of AWR1843AOP datasheet.

According to figure of datasheet, the sequence of power supply rail is +1.2V -> +1.8V and +1.0V -> +3.3V.

My question is, is there an exact sequence of each power supply rails?

Or, the figure of wake-up sequece of datasheet is something information?

Best Regards

  • 0
    TI__Expert 3490 points

    Hello,

    There is no sequence in which these external power supplies need to be stable with respect to other external power supplies.

    Please ensure that all the power supply rails are stable before nRESET release.

    Thanks.