STM32 MCUs Products

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GPIO Latency STM32F411 Blackpill

Hello All, I am doing this post after trying everything I can to solve my Issue. I have a STM32F411 Blackpill connected on an Apple II Bus Slot.The Apple II has a clock (Phi0) close to 1 Mhz. Phi0 is connected to Pin A2 where I have setup a Falling &...

Screen Shot 2025-05-08 at 20.56.06.png
vbesson by Senior
  • 283 Views
  • 16 replies
  • 0 kudos

Resolved! STM32 F446RE Looses RTC Registers' Data When Power is Off

Hi all,I'm building a discharger using my STM F446RE, such that it's RTC registers are used to store data that'll be loaded to set parameters in my code every time the discharger is plugged into the power. Just to clarify - I'm NOT using the RTC as a...

nivg by Associate
  • 106 Views
  • 3 replies
  • 0 kudos

DFU mode STM32H7B3

Hello, we are facing some problem entering DFU mode from application code on our custom boards equipped with STM32H7B3 with bootloader release 0x92.  On contrary, everything works fine with same board equipped with STM32H7B3 bootloader release 0x91. ...

MMarco by Associate II
  • 447 Views
  • 12 replies
  • 2 kudos

External QSPI with STM32H753

Hi, I am planning to use the external serial QSPI flash interface with STM32H753. Flash part number is MT25QL256ABA1EW7-0SIT or IS25LP064D-JKLE-TR. Operating voltage 3.3V at frequency of 80MHz DDR. Can you please let me know will there be any concern...

DJ_IND by Associate II
  • 68 Views
  • 1 replies
  • 0 kudos

Resolved! System Clock stimluation error

I am using the startup file in Keil. However, when I run the simulation in the debugger, my system clock (SYSCLK) is not 72 MHz, even though I have confirmed that HSE_VALUE is set to 8 MHz.Can someone help me figure out why the SYSCLK is incorrect du...

sys clk.png

STM32H7 and openbootloader

Hi I'm implementing Openbootloader to my project, using an STM32H743, and is having a hard time finding the correct start addresses and size for "Option bytes registers". This is needed to in the "openbootloader_conf.h" file in the Openbootloader mid...

KFisc.2 by Associate
  • 605 Views
  • 1 replies
  • 1 kudos

Resolved! STM32U5 workshop GPDMA on U5A5

I followed the GPDMA tutorial here:https://www.youtube.com/watch?v=jKOhRfb3gvkand configured everything as shown.  The workshop was on a U575 but I would assume it's the same configuration for the U5A5?  I'm using the Nucleo-U5A5ZJ-Q.  I'm unable to ...

moylando by Associate III
  • 116 Views
  • 2 replies
  • 0 kudos