STM32 MCUs Products

Ask questions, find answers, and share insights on STM32 products and their technical features.

cancel
Showing results for 
Search instead for 
Did you mean: 

Forum Posts

Resolved! VREF+ exceeding VDDA during power on/off

I'm trying to understand the following excerpts from the STM32L476 datasheet, which seem to contradict:In Table 20 - the absolute maximum voltage on the VREF+ pin is given as 4.0V (VREF+ I assume falls under the "other" category). Table 76 seems to i...

stevedebonis_0-1712092530973.png stevedebonis_1-1712092587951.png

How to connect a STM32F4xxxRE on a custom PCB

Hello,This is the first time I've designed a PCB with a stm32. I found a PDF on the internet that gives me an example of a Nucleo connection but I'm not sure if my schematic is correct.I don't need all the headerts or the usb connection (I'll be usin...

Paulo971_0-1712943662324.png Paulo971_1-1712943686124.png
Paulo971 by Associate III
  • 5391 Views
  • 10 replies
  • 4 kudos

STM32U535 Backup registers access wait states

Hi all, I am running into an issue related to writing backup registers on the STM32U535xx MCU. When I compile my code with -Oz, the write fails, whereas with -Os, it succeeds. The relevant C code is pretty straightforward:LL_PWR_EnableBkUpAccess();LL...

notepad_0swXgaLMqa.png
GeertL by Associate II
  • 2552 Views
  • 4 replies
  • 1 kudos

Program stm32F745 via RS-485 and bootloader

Hello everyoneIs it possible to program my STM32F745 via RS-485 using the integrated bootloader?My idea is using USART1 (as written in the AN2606) and a transceiver to do that. Has anyone done something similar? Thank you very much in advanced. Best ...

ADC Rank starts at 2 on 1st conversion

Tools:STM32CubeIDE: Version: 1.14.1 Build: 20064_20240111_1413 (UTC)TM32CubeMX: Version: 6.10.0-RC9 Build: 20231120-2037 (UTC) OS:Linux Lmint21 Hardware:STM32H743 I set up ADC3 in CubeMx to enable scan on Internal Temperature and VBat and set the DMA...

UART not listening for transmission after function executing

Hi I encountered problem while working on project. I am trying to establish connection between devices using RS485 interface. Slave device has been designed to control servo motors, positions to be set are sent from the master. Everything worked fine...

MaciejG by Associate II
  • 1033 Views
  • 0 replies
  • 0 kudos

Resolved! STM32F401 - using OSC_IN/OSC_OUT as GPIO

Hello,I am having trouble in getting PC14 and PC15 working as GPIOs on the STM32F401. The reference manual says that "The LSE oscillator pins OSC32_IN and OSC32_OUT can be used as general-purpose PC14 and PC15 I/Os, respectively, when the LSE oscilla...

kla by Associate
  • 4924 Views
  • 2 replies
  • 2 kudos