STM32 MCUs Products

FMC: How to get full memory access on a 32 bit SDRAM via 16 bit data bus?

1)STM32H745I-DISCO, the bus is 16bit and the memory is 32bit. In the spec there is 128M-bit SDRAM.Question is if full memory 1(28M-bit) is available for usage on this kit?2) If answer is yes on first question. We can only access half of the memory an...

Custom board using a STM32H735IGK6 based on a STM32H735G-DK dev board. Different format processor and a different external flash memory (MX66LM1G45G) due to lack of availability of parts. I need an external flash loader. Can I get one or how do I create?

RTC lags

Hi I am having lags in the RTC after one day. I am currently using the Nucleo L476RG board, the RTC oscillator is LSE and my CubeIDE version is 1.6.1. It seems as if in the time intervals where I do not read the RTC it is not updated. The next table ...

Is this correct about the RTC and the sub second counter

I'm using an STM32L051.Is this how the sub second counter works in the RTC? The sub second counter always starts at PREDIV_S when a new second starts?The graph shows a simplified example when PREDIV_S is 3.

STM32H725 FDCAN：A CAN bus fault is caused when the FDCAN is Stoped

One VCU controller A, one USBCAN converter B, one my H7 device C. A is sending, B and C are receiving. When C Stop FDCAN, both A and B report a bus failure.​One VCU controller A, two USBCAN converters B1 and B2, . A is transmitting, B1 and B2 are rec...

STM32: Performance for FFTs

1) We are looking to perform 140 FFTs each having 2048 samples every second. How can I gauge the performance of STM chips for this purpose or are there benchmarks or data published about this?2) Are their suggested libraries for running FFT’s on STM3...

HAL_SPI_TxRxCpltCallback is not reached using SPI on STM32H743

Greetings. I am having an issue with SPI communication Note: In my case, under STM32H743, with SPI4 used as "Full-Duplex Slave" and "Hardware NSS Input Signal". The SPI4 pins used are PE11 (SPI4_NSS), PE12 (SPI4_SCK), PE13 (SPI4_MISO), and PE14 (S...

I am using an STM32H747 - (in an Arduino Portenta) - share data between cores in SDRAM

The SDRAM is 8MB, and starts at 0x60000000I would like o share the first 1MB between the M4 and the M7 coresvoid MPU_Config() { MPU_Region_InitTypeDef MPU_InitStruct;   /* Disable the MPU */ HAL_MPU_Disable();   // Initialize SDRAM Start as s...