Stm32H723 Stop mode high current 4mA !!

[NMast.1]

Hi all,
I am using the Nucleo-H723ZG board and I'm testing the consumption in stop mode, running the example from the ST repository NUCLEO-H723ZG\Example_LL\PWR\PWR_EnterStopMode.
The code compiles without any warning and I use the stlink of the nucleo to program it.
I removed the Jumper JP4 (VDD_MCU) and in its place I inserted a precise ammeter (HP34401A)
The current measured at the moment of STOP is about 4mA!!
Can anyone help me?
Thanks a lot,
Nicola

[AScha.3]

Hi,

so look at the circuit of the board to see, what still is connected - and check, that you switched it off.

https://www.st.com/resource/en/schematic_pack/mb1364-h723zg-e01_schematic.pdf

 

btw  4mA ...still driving a LED ? :)

 

[NMast.1]

Hi Asch.3,
thanks for the reply.
But when I measure the current instead of the JP4 jumper it is only that of the MCU without anything else.
The jumper is actually made to measure the current of the MCU.
Thanks,
Nicola

[Andrew Neil]

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@NMast.1 wrote:

The jumper is actually made to measure the current of the MCU.

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But that will include any current sourced from the MCU;  whether intentionally, or by "leakage" to other stuff on the board - such as the ST-Link.

See the link I posted earlier.

[Andrew Neil]

As @AScha.3 said, check that what you're measuring isn't including other things on the board - especially the ST-Link:

https://community.st.com/t5/stm32-mcus-embedded-software/how-to-check-stop-mode-current-consumption-on-nucleo-l073-board/m-p/763513/highlight/true#M59118