Is there any way to measure the current on STM32U575ZI-Q board

mdalal · ‎2024-12-15

Hi,

I am having STM32U575ZI-Q development board. I have implemented a firmware with FreeRTOS with low power support where the firmware goes to the low power mode and unless there is an external interrupt, it stays in a low power mode.

Now, I want to measure the current ocnsumption when the MCU goes to the sleep mode (STOP2 mode specifically). Is there anyway I can measure the current from the STM32Cube IDE or any addtional board that can be interfaced with the development board?

krotti42 · ‎2024-12-16

Hi @mdalal !

Not possible for you to measure the current from the MCU through jumper JP5 with a DMM?

JP5

mdalal · ‎2024-12-16

Oh, do you mean that if I connect the DMM across this jumper pins, the job is done? What precision of DMM is required.

mdalal · ‎2024-12-16

I am assuming that the DMM is in current measurement mode.

krotti42 · ‎2024-12-16

@mdalal wrote:
I am assuming that the DMM is in current measurement mode.

Yes, of course.

@mdalal wrote:
Oh, do you mean that if I connect the DMM across this jumper pins, the job is done? What precision of DMM is required.

Yes. The precision of the DMM depends on your requirements. Personally I would prefer a DMM with you can at least measure 1µA.

The possible power consumption from the MCU in different situations are also described in the device datasheet. Here is a screenshot:

mdalal · ‎2024-12-16

Great. I will try to get such DMM within and will let you know. You can close the ticket meanwhile.