How to achieve the expected standby current (JP4) ...

Hello,

[Question]
How should I modify the sample project so that I can achieve the expected current consumption in standby mode (as described in the user manual)?

[Board]

NUCLEO-U385RG-Q

[Development Environment]

STM32CubeIDE 1.19.0
STM32CubeMX 6.15.0

[PWR_STANDBY]
I am using the sample project “PWR_STANDBY” generated from STM32CubeMX 6.15.0. I would like to modify this project for my purpose.

[Goal]
I want to put the board into standby mode, measure the current through JP4, and reproduce the expected value described in the user manual (https://www.st.com/resource/en/datasheet/stm32u385rg.pdf, page 115).

[Current Situation]
When I run the sample project without any modification, I measure about 255 µA. This is much higher than the expected value in the user manual.

Thank you for your advice and support.

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How to achieve the expected standby current (JP4) on NUCLEO-U385RG-Q?