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Forum Posts

SPI on STM32G071 not behaving as expected

Hi,i have  new design that i am migrating to the STM32G071 and having issues with the SPI1 port PB3,PB4,PB5. Changing CPOL and or CPHA during init code do not seem to have any impact, when powered down and restarted.I am seeing 9 clock pulses when se...

DS4_QuickPrint11.jpeg

Calibrating the STM32's real-time clock (RTC)

I have an STM32L011F4P6 with an RTC.  It is running at 3.3V and 16 MHz off the internal HSI RC clock.  The RTC is driven by a +/-20ppm 32.768 KHz crystal.  It is running at room temperature (23-25C).  After calibration, I am losing several seconds pe...

STM32H723 SPI clock issue

In my project I've set the SPI clock to 125MHz; with a SPI prescaler value=4 all works good, when I set it to 2 the SPI stops working and ther is no clock signal.Any helps ? Thank youCarloV

carloV by Associate III
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Supported PSRAM and Flash for the STM32N6xx

Hey guys, I'm looking for some suitable HexaSPI PSRAM and also the OctoSPI Flash for the STM32N645 board I am just building.. I cant find the parts used on the DK so do you have a list of supported memories? I need 256Mb PSRAM and will start with a 1...

RAdam.1 by Associate III
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  • 0 replies
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STM32H7R3 PSSI RDY/DE bug

Hello,I dug deeper into PSSI behavior, and and I observed unwanted behavior. From my point of view it is a bug.PSSI is configured as:OUTEN = 1 (transmit mode)CKPOL = 0 (outputs driven on rising edge, inputs sampled on falling edge)RDYPOL = 0 (0 at in...

pssi3a_valid.png pssi1a.png pssi2.png

USART + DMA and RTO (receive timeout) together ?

Can i use UART + DMA  ( normal ) + RTO ? I try to add RTO but when activate RTOE bit the DMA buffer stops fills .I take interrupt with active RTOF , stop DMA , but nothing in buffer !? I use stm32H7 with hardware implemented RTO. Can some one to give...

Brussl by Associate II
  • 105 Views
  • 4 replies
  • 1 kudos

Resolved! Power consumption of STM32H5 MCU for VIO Pins

Dear ST Team,I am using an STM32H5 series microcontroller in my design and I am trying to understand the overall power consumption contributed by different MCU interfaces.So far, I have identified the following:The typical maximum current on VDD, in ...

RajeshM by Associate
  • 109 Views
  • 3 replies
  • 2 kudos