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DP83867IR: DP83867IR three-supply power-up sequence 2

Part Number: DP83867IR

Hi,

I want to confirm power-sequence as follows:

*1.

My customer is considering the following power sequence on three-supply power-up.

It takes less than 25ms from "Start Power-up on VDDA2P5" to "Stable power on VDDA1P8".  Also, VDDA1P8 is started wake-up after 2.5ms from stable 2.5V on VDDA2P5.

Does he has any issue?  Although I think no issue, I want to confirm it.

 

*2.

On his system, VDDIO Supply is used on 1.8V.  So VDDIO and VDDA1P8 is same power-up.

Does he has any issue?   Although I think no issue, I want to confirm it.

 

Thanks and best regards,
M.HATTORI.