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Create external signal with clock 100 Mhz in STM32H745

Hi all, I have already searched on the forms and in general did not find an answer to my problem, I will be very grateful to you for help.I need to create an output signal with a frequency of 100 Mhz as CLK in  STM32H745. I used the Discovery Boards ...

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Ronil by Associate
  • 374 Views
  • 20 replies
  • 8 kudos

TIM6 APB1 prescaler

Hello,STM32F103RB microcontroller.The Figure1 (see attached image) shows clock tree of STM32F103RB microcontroller. Before TIM6CLK, there is a block, which is highlighted in red rectangle. What's IF (APB1 PRESCALER  = 1) x1 ELSE x2 label in this red ...

Reset CM7 Core from CM4 core

Hello. I have a STM32H747XI project. This MCU has both CM4 and CM7 cores. I can reset both of them, when I use NVIC_SystemReset() function. How can I reset only CM7 core from CM4 core?

Gökhan by Associate II
  • 149 Views
  • 3 replies
  • 1 kudos

SMT32F767 HSI Clock Calibration

Hi,I am having uart baudrate problems while HSI clock as uart source clock. No problem with PCLK as source with the same uart. In Cube IDE (V1.16.0) and F7 software package (V.17.2), I get different values for HSI_CALIBRATION:Ide gets as 0x10 while r...

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TKana.1 by Associate III
  • 418 Views
  • 12 replies
  • 3 kudos

stm32H7 clock scheme 49.152MHz to 24MHz and max MCU

Hello,I sort of feel *** not to get sure there not a best solution. I develop an Audio board, with USB HS. I will have a good 49.152MHz clock to drive the SAI, and I wanted to ue it for the HSE.49.152 * 125 / 256 = 24MHz that I need for the ULPI. Loo...

jmf1 by Senior
  • 336 Views
  • 4 replies
  • 0 kudos

How does HSI48CAL get loaded into RCC_CRRCR

Hi ST Community,Does anyone know how the HSICAL48 value gets loaded into RCC_CRRCR? The RM says "These bits are initialized at startup with the factory-programmed HSI48 calibration trim value", so I assume the trim value is stored somewhere in system...

TKoja.2 by Associate II
  • 373 Views
  • 5 replies
  • 1 kudos
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