Showing results for 
Search instead for 
Did you mean: 

New possibilities for the ultra-low power segment!

ST Employee

STM32U0 is the first Cortex-M0+ with a static consumption of only 160 nA in standby mode with RTC (Real-Time Clock) and 16 nA in shutdown. It also achieves 118 points in CoreMark and targets SESIP level 3 and PSA level 1 focusing on firmware code protection, making it one of the most capable MCUs in the ultra-low-power segment. This is possible because the STM32U0 adopts many features we’ve been implementing in other devices while reusing a 90-nm process node that offers exceptional yields.

Consequently, the STM32U0 achieves one of the best static consumption at this price point, granting engineers more freedom to optimize their design for entry-level battery-powered applications in industrial, medical, smart metering, and consumer wellness markets.



STM32 software and hardware tools available:

For more information:

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.


Cool, nicely reduced power consumption, well done.

But what about an MCU which can run with 1.2V?

I am looking for a MCU which has almost all pins (at least SPI/I2C/QSPI) as 1.2V VDDIO.

Reducing the power consumption is not "just" using an ARM Cortex M0/M0+ and lowering the core clock: it is also to consider going down on VDDIO (and run entire system with 1.2V).

When will you have a MCU supporting 1.2V systems?
(many external chips out there for 1.2V volt, just the MCU needs still level shifters... and burning power on the system board at the end - "think about systems" (not just the MCU itself).

STM has pretty cool MCUs in portfolio.

I have checked today: STM32H5x with 1.2V GPIOs:
It turns out, on this MCU I have VDDIO2 and some GPIO pins for 1V2 and below, so that I can run:

  • 2x SPI
  • I3C (or I2C)
  • and even SDMMC2 possible

with 1.2V volt. Cool!
Just QSPI with 1.2V is missing.

Dear STM team:

it would be great if the regular VDDIO could also go down to 1.2V. The MCU core runs away already at 1.1V.
Having the option to use QSPI as well on a 1.2V VDDIO(2) would be great: Map the QSPI ALT functions to the GPIO pins with VDDIO2, instead of SDMMC.

Great MCUs provided by STM.