STM32 MCUs Products

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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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Resolved! Strange values when reading timer CNT

I have a timer (TIM10) with a period of 500 us, running without interrupt or any other function.Then I have a rising+falling signal interrupt on PB0 (EXTI0) driven with a 31.25 kHz square wave.In EXTI0 I read the CNT value into a variable New, evalua...

Guidoted by Associate III
  • 1575 Views
  • 15 replies
  • 2 kudos

STM32H723 .. 735 RM0468 System Architecture table wrong

... or something I don't understand?Looking at RM0468, 2.1 System Architecture "Table 2. Bus-master-to-bus-slave interconnect" shows that DMA1 and DMA2 have access to basically everything except TCM, including APB4 peripherals and SRAM4.Is there some...

LCE by Principal
  • 475 Views
  • 6 replies
  • 3 kudos

Resolved! Project Migration to STM

Dear Team,Currently, we have developed a prototype with an ESP32 and the prototype meets all the functionalities. However, we are now having some troubles scaling it to production. So now we are looking to migrate our product to using STM MCU. We hav...

lufa by Associate II
  • 902 Views
  • 6 replies
  • 0 kudos

Timer Trigger DMA Tx transfer for SPI2

Hi there,Iam using STM32F407ZGT6 controller, and we're interfacing DAC (MCP4902) with SPI2 and SPI2 is connected to DMA1. I need to transfer data in a circular mode using DMA1 to DAC using SPI, i have gone through the reference manual only TIM1 and T...

Debug protocols comparison and choice

Hi,when it comes to programming and debugging, what is the difference between the 4 types (see screenshot below)?Which one is best and how do you decide which one to use?Please don't just say they all work the same pick one... :) I am asking for the ...

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Ricko by Senior II
  • 869 Views
  • 9 replies
  • 5 kudos

Resolved! Choosing proper MCU for HTTPS webserver

Hello,recently I was testing HTTP webserver project on a NUCLEO-F429ZI board and it works ok. I have created a driver for LAN9303 (dual port PHY) tested it using shield based on this https://github.com/ATM-HSW/MbedOS-with-LAN9303After it worked, I su...

Faust by Associate II
  • 732 Views
  • 4 replies
  • 0 kudos

STM32L053R8T6 Stop Mode 2

Hello, I am working with my custom PCB with STM32L053R8T6. My code works just fine when I run it in debug without any stop mode (deep sleep). It enters to the RTC and button interrupts perfectly. However, when I want to make the MCU enter to sleep mo...

STM32U535 hardware CRC peripheral modbus

I want to use crc hardware peripheral in STM32U535 for checking some modbus and I copied a code from this community thanks to @Tesla DeLorean . But in my case this code seems to work only for a buffer lenght multiple of four bytes. I can't found my e...

GDC by Associate II
  • 304 Views
  • 2 replies
  • 0 kudos

Entering EPR mode failed - USBPD

Hi team,  We have our own customized USBPD board (STM32L562CET6) which support both SPR(100W) and EPR(140W). SPR is working great, now we want to work on 140W using EPR mode. So that initially we have tried to enter EPR mode by following method #defi...

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AVND by Associate II
  • 681 Views
  • 4 replies
  • 0 kudos