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

Problem with LSE on stm32l562xx

Hello. I've a problem regarding LSE On stm32l562xx mcu. Sometimes it boots, sometimes it doesn't "90 % of time it generates timeout Error" . and it takes too much time to boot up to 4 seconds. I've tried all your sdk initializations, also tried setti...

as0 by Associate II
  • 8516 Views
  • 13 replies
  • 1 kudos

STM32F4 I2C CR2 Peripheral clock frequency

Dear Forum,I'm using a STM32F401 and implemented the I2C as Target transmitter (Slave) answering a I2C question. I'm programming the I2C CR2 (FREQ Bits) Register as follows with correct speed (42 MHz)I2C1->CR2 = ((DRV_RCC_GetPCLK1Freq() / 1000000u) &...

LGrb1_0-1777284932058.png LGrb1_1-1777285065422.png LGrb1_2-1777285123661.png
LGrüb.1 by Associate III
  • 116 Views
  • 0 replies
  • 0 kudos

Resolved! STM32H7 HRTIM clock drifting?

Hello everyone, I have a NUCLEO-H755ZIQ board and I am trying to use the HRTIM to output a 50Hz pwm signal. I hook the output to an oscilloscope and I see that the pulse has a period of 19.2ms instead of 20ms, meaning that while I have configured the...

chrkaras by Associate III
  • 198 Views
  • 5 replies
  • 0 kudos

STM32H723 with SDMMC UHS-I voltage switching

During the initialization of STM32 UHS-I, it has an IO output of 3.3V. After initialization, it outputs at 1.8V. However, I noticed that the external voltage switch transceiver is powered at 1.8V on the host side. I'm afraid it might burn out the ext...

YYT by Associate
  • 102 Views
  • 0 replies
  • 0 kudos