STM32H723ZG Nucleo Board 144p, Super Low Power Consumption, Probably on Standby 10uA

Question

Hello,
I want to use the STM32 H723ZG Nucleo board 144p in my LoRaWAN project. For that, I need my microcontroller to consume less than 10uA of current in standby or sleep mode. Is that achievable? If yes, then,

1- What will be the hardware?

2- clock configurations?

3- What will be the configurations in the IOC file?

4- How can I not give power to the Ethernet port?

or if there is anything else i need to keep in mind.

Andrew Neil · Answer

To configure the board, you'll need to study the User Manual and schematics for the board - both available on the Product Page for the board:

https://www.st.com/en/evaluation-tools/nucleo-h723zg.html

To configure the STM32 chip, you'll need to study the Datasheet and Reference Manual - both available on the Product Page for the chip:

https://www.st.com/en/microcontrollers-microprocessors/stm32h723zg.html

Here's a presentation on the STM32H7’s power management functions and all power modes:

https://www.st.com/content/ccc/resource/training/technical/product_training/group0/97/f1/9d/3a/c4/c2/4c/ff/STM32H7-System-Power_control_PWR/files/STM32H7-System-Power_control_PWR.pdf/_jcr_content/translations/en.STM32H7-System-Power_control_PWR.pdf

See also: Introduction to Low power with STM32 - stm32mcu - ST wiki