STM32 MCUs Products

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Resolved! Issue with STM32H747XIH6 Internal SMPS Bring-Up

Dear Sir,We are facing an issue while bringing up the STM32 microcontroller (part number: STM32H747XIH6) using the internal SMPS.When we power the MCU through the LDO path, everything works fine, and we are able to connect to the STM32 via JTAG. Howe...

Samudra by Associate II
  • 309 Views
  • 1 replies
  • 0 kudos

Resolved! DMA Transfer Error for GPIO on STM32G031

I am trying to periodically transfer data to the first byte of GPIOA (PA0-PA7) using DMA Channel 1 and TIMER1, but am hitting a transfer error immediately after enabling the DMA channel for transferring. * I can write to GPIOA->ODR using the CPU and ...

Array of PDM microphones best bus interface

Hello,I would like to design a microphone array with up to 16 microphones. I want to use the stm32h7a3zi board which has a lot of peripherals.I was looking at the DFSDM interface, but with only 8 channels / 8 filters up to 8 pdm microphones can be ha...

frnt by Senior
  • 1302 Views
  • 1 replies
  • 0 kudos

STM32H563 ADC Oddity

Hello,Im working on a program which sends data from the ADC to the computer. My problem is that the data from my STM32H563ZIT6 is bad. I first noticed this from looking at the data sent from the computer and confirmed this by outputting the ADC data ...

tw1_0-1744079456321.png tw1_2-1744079710265.png tw1_3-1744079851314.png
tw1 by Associate II
  • 318 Views
  • 3 replies
  • 0 kudos

Resolved! Questions on calculating DMA latency on STM32H7 chips

I found an application note which goes in depth on DMA transfer speeds and clocking for F7 chips, but haven't been able to find anything similar for H7 chips. I have a few questions:How are each of the DMA controllers clocked on an H7xx chip? My assu...

BenDDMC_0-1749497064185.png
BenDDMC by Associate
  • 328 Views
  • 2 replies
  • 0 kudos

Low Amplitude and DC Offset on the Crystal

Hello, We use STM32H755 with a 25MHz crystal oscillator connected to OSC32_IN and OSC32_OUT OSC_IN and OSC_OUT pins. Probed on the bench, I see a sine wave with a DC offset and low amplitude. Can you comment if the attached waveform looks okay? My ex...

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drad1 by Associate II
  • 336 Views
  • 7 replies
  • 1 kudos

Application not starting correct after UART bootloader

Hi,I´ve a application (with RTOS) where I do a FW update via the internal UART bootloader (BOOT0 pin method).After flashing is finished I set the Boot0 to GND and toggle the reset pin. The application starts, but I don´t get USART interrupts any more...

AWack by Associate III
  • 257 Views
  • 2 replies
  • 0 kudos

Resolved! STM32G474 High speed ADC DAC

Dear Community, i got two interconnected questions, as i want to build a measurement system that measures and generates sine signals and multi-sine signals with frequencies of up to 1 MHz. For this task i would like to have 10MSPS DAC and ADC acquisi...

LTDC prevents CPU (of MCU) from going into sleep mode

LTDC prevents CPU (of my MCU) from going into sleep mode. When i deactivate the LTDC clock, the CPU goes to sleep mode. LTDC interrupt is enabled trough IOC, without enabling of LTDC interrupt, screen remains black. I use the following MCU: STM32L4P5...

FLuba.1 by Senior
  • 270 Views
  • 4 replies
  • 3 kudos