Current consumption in Stop1 mode

[dtarrago]

Posted on March 15, 2017 at 09:58

Hello,

I have programmed my board (STM32L475) with the example '...STMM32Cube_FW_L4_V1.7.0\Projects\STM32L476RG-Nucleo\Examples\PWR\PWR_STOP1_RTC\MDK-ARM'. I measure current consumption and it is higher than the expected one => it is about 80uA. Which is the reason of such high figure?

Best regards.

#stop1 #stm32l4 #current

[Nesrine M_O]

Posted on March 15, 2017 at 10:28

Hi

TARRAGO.DANIEL

,

• Try to refer to

  http://www.st.com/content/ccc/resource/technical/document/application_note/group0/93/81/9b/8d/2f/09/4a/e8/DM00125306/files/DM00125pdf/jcr:content/translations/en.DM00125pdf

  application note to verify your PCB
• Be sure that your MCU enter in stop mode.

-Nesrine-

[dtarrago]

Posted on March 15, 2017 at 15:50

Hi,

It enters sleep mode. Furthermore I have noticed that there is no need for an external reset and I had one. I have removed this reset but now, in same situation (Stop1) current consumption has increased to around 230uA. I do not understand this situation!! And I have measured voltage at NRST pin: it is 1.87V and Vcc is 3.33V. Why do I get such difference?

Best regards.