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New possibilities for the ultra-low power segment!

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 pro...

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RTC hours keep counting after 24 hours

Hi,I use RTC on a STM32L073. Every 12hours, I receive a date and time to set to the RTC. (Sometime, like 1% of the time) After writen the new RTC value, the RTC doesn't overflow after 23h59min59sec and keep counting without incrementing day. I can ha...

Ppeyr.1 by Associate III
  • 1063 Views
  • 5 replies
  • 3 kudos

Resolved! STM32H7 Power down sequence

About Power-Down Sequence (Device : STM32H7B0xB)​Datasheet : DS13196 - Rev 6 Page 13"During the power-down phase, VDD can temporarily become lower than other supplies only if the energy provided to the microcontroller remains below 1 mJ. " ​Could y...

Makoto by Associate
  • 729 Views
  • 3 replies
  • 2 kudos

Multi channel ADC + SPI + I2C

I'm using STM32 NUCLEOH743ZI2 board were I have written a code which consist of Multi channel ADC using DMA with timer, SPI and I2C protocols. SPI and I2C is not working whenever multi channel ADC is enabled else SPI and I2C is working fine. We are u...

GHARI.1 by Associate II
  • 416 Views
  • 1 replies
  • 0 kudos

Resolved! F411 System Clock Configuration with Internal Clock

I have been working F411RE Nucleo board with LL library for quite some time. I found the sample code for SystemClock_Config uses external oscillator as showed below. I wonder if there is any sample for internal oscillator. /* Enable HSE oscillator *...

HDaji.1 by Senior
  • 693 Views
  • 3 replies
  • 0 kudos

How Segger J-FLASH configures its external loaders?

A customer has a board with STM32F746 and QSPI flash.The board looks as derived from STM32746G-DISCO, though I'm not 100% sure.Their program has data in the QSPI flash, and they flash the app using J-LINK and Segger J-Flash.​Now, I cannot figure out ...

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Pavel A. by Evangelist III
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  • 3 replies
  • 0 kudos