STM32 MCUs Products

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Resolved! STM32F4 - Timer - Max Frequency External Clock Source ETR

Hi,We have a custom firmware running in an STM32F427, and I'd like to find out what the highest frequency supported on a timer with an external clock source using ETR function.Based on AN4776, I can use a prescaler function (ETR) to read clock freque...

RNJ by Associate II
  • 4283 Views
  • 8 replies
  • 6 kudos

Resolved! Help choosing the best external RAM for STM32H723

Hi all!I am making a PCB with STM32H723, and have chosen this MCU due to its greats specs and versatility. However I would like to add at least 4Mbit (0.5MB) of RAM, either as SDRAM, SRAM or PSRAM etc. using the FMC (Flexible memory controller). Howe...

elso by Senior
  • 4634 Views
  • 1 replies
  • 1 kudos

Resolved! CAN ExtID filter for exactly two IDs

Dear Community, even after reading what feels like 100 posts, I still can't manage to set the filter so that exclusively 2 IDs are let through.I use the extendet ID, 1 Byte IDs and have managed to let exactly one ID through with the MASK_MODE, as you...

Anno by Associate II
  • 2520 Views
  • 8 replies
  • 0 kudos

STM FreeRTOS micro, nano second delay

I m using FreeRTOS functions and discovered that the osDelay could only works on mini second, anyway to perform at micro second and nano second delay? If i create a micro second delay using timer TIM1 will that satisfy real-time prerequisite? Anyone ...

Resolved! Unexpected COMP1 behavior on STM32H723

Hello,I need to detect input when it goes over REF/2 (1.65V). I do supply VREF+ pin with 3.3000V.My signal has offset of 1.2V, and it will go over 2V when I apply signal to it.Everything is working, but it has unexpected behavior. I can only use nega...

COMP_CIRCUIT.PNG REF_DIV.PNG REGISTERS.PNG
Linas L by Senior II
  • 2063 Views
  • 7 replies
  • 0 kudos

Resolved! CAN Normal Mode Communication between 2 boards

Hello, I am trying to implement a Normal Mode CAN communication using the STM32F407 discovery board and sn65hvd230 transceiver. It works fine for Loopback mode but when I change to Normal mode I get a Bit Dominant error. I am setting the bit rate to ...

STM32F405 vs STM32G4

Hi ST experts,Does STM32G4 series MCU support Vocoder feature? If yes, do you have any related documents available for reference? Current design is using STM32F405 which can support Vocoder application. Thanks. 

STLearner by Associate III
  • 1852 Views
  • 2 replies
  • 0 kudos