power consumption in PWR_STOP1 example is about 80ua in Nucleo STM32L452 board ?

[Cchn.1]

hi,

we have the problem about the power consumption for stm32L452.

with the cubeL4 example PWR_STOP1:

STM32Cube_FW_L4_V1.17.0\Projects\NUCLEO-L452RE\Examples\PWR\PWR_STOP1 

having programmed the example into Nucleo STM32L452 board , the current in low power stop1 state measured from "jp6" ,which is the idd test port of NUCLEO board, is about 80uA.

but from datasheet , the current in stop1 state should about 10uA.

even with the  "PWR_SHUTDOWN" example in cubeL4 , it is also about 80 uA.

however in Nucleo STM32L496 board, with the same example PWR_STOP1 , the current measured from idd test port is about 10uA.

and in a product board with stm32L451 , it is also about 80 uA in low power stop1 state

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so we have the question about the current in stop1 state for stm32L452

1 is it right about 80uA in stop1 state?

2 if there is something wrong, what is the problem?

3 even in the SHUTDOWN state, it is also about 80 uA, tested by the PWR_SHUTDOWN example. what is the problem?

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thanks for the help​

[Imen GH]

Hello,

Welcome to STM32 Community!

Please refer to Datasheet DS11912 ( Table 4)

Regards

[Mohamed Aymen HZAMI]

Hello @Cchn.1​,

I run the example on Nucleo STM32L452 board, it works perfectly, the current consumption I got is about 6 µA. I run also the shutdown mode example and I got about 46 nA of current consumption.

Maybe you have made some changes on the board you are using and that's why you have the over current consumption ?

Mohamed Aymen

[Cchn.1]

thanks for your help!

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but I am puzzled.

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this is my procedure:

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1 download "en.stm32cubel4_v1-17-0", and extract it

2 enter “\Desktop\STM32Cube_FW_L4_V1.17.0\Projects\NUCLEO-L452RE\Examples\PWR\PWR_STOP1\SW4STM32\STM32L452RE_NUCLEO�?

3 click “.project�?,opend up with cubeide automaticaly，select “STM32L452RETx�?when ask select the best match

4 click "project"-"build all" 

5 right click the project(in project explorer), click "properties" , new an "run debug/debug settings" as defualt, with stlink as the programer

6 then click "run"

7 watting for the "LD2" not blinked , the current measured in "jp6" is about 87uA.

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this is the photograph of my board setting,nucleo-L452RE

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an product of mine with stm32L451, it is also about 80uA when we set it in stop1 state .

I am so thankful for your help,and may you give me smoe more help!

thanks

[Mohamed Aymen HZAMI]

Hello,

After downloading the code try to unplug and plug the board again and see the current consumption.