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zxiao.2
Associate
Apr 10, 2020 4:23 AM UTC
Question

the current consumption of the STM32WB55 in stop2 mode is about 116uA whici is much higher than it should be in the datasheet about 2uA.

I test it on P-NUCLEO-WB55 kit board which without any other devices connected on it with the official examples "PWR_STOP2_RTC" ,and I did test it as the readme.txt file tell me(remove all jumpers on JP5, and test the current on the JP2), but the result is near 116uA.

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Also I have test the standby mode with the "PWR_STANDBY_RTC" examples, the result is about 0.2uA which is ok.

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So what's the matter would it be with the STOP2 mode about the big current?

Looking forward to your ​reply.

Thanks.

xiaodong.zhao

This topic has been closed for replies.

3 replies

zxiao.2
zxiao.2Author
Associate
Apr 13, 2020 11:20 AM UTC

Hello , Is there anyone can give any suggestion please?

Piranha
Principal III
Apr 14, 2020 6:22 PM UTC

Set DBGMCU_CR to zero before entering low-power mode.

zxiao.2
zxiao.2Author
Associate
Apr 15, 2020 7:43 AM UTC

Hi Piranha:

I've tried that, but it doesn't work.

Thanks.