STM32 MCUs Products

Is internal pull up the same as external pull up resistor.

for example IC2 needs pull up resistor on the board but there is internal pull up options for pins.I wonder if this is the same. So by setting internal pull up you can skip the pull up resistors on the board. I know that NRST pin has internal pull up...

Unexpected behaviour of output PWM signals during flashing phase.

Hi, I'm using STMH755BIT MCU.I've configured three TIM1 channels to generate PWM signals, everything is working correcty except during the initial phase of software download, when PWM signals self-enable for approximatly 150ms, and then return correc...

Which flag definition would be faster ?

I have a lot of different flags in project, I wonder which style definition reads faster by processor .Definition 1     typedef struct{   __IO uint8_t flag1 ;   . //other flags     }Flag_t ;     Definition 2     typedef struct{   ...

How to search appropriate STM32

I'm looking for an STM32 which features:-Cortex M4 or M7-CAN bus capability -FPU/DSP capability-at least 512kb flash (tough I prefer 1MB or even more)-no BGA (I need to adapt it manually to a breadboard for testing - BGA makes things complicated at t...

What options/methods are there for the STM32F103CBT6 if we want to upload new software and check if it is ok, before we run it? I see options like dual NVM bank. But dont think it applies to the 32F103. regards, rob

Interfacing MLX90614 sensor i2c with STM32F401 Discovery board. Problem : I am getting device address, register address, data address correct, but getting always NACK in stop condition. Can anyone please help me, this is my code snippet.

uint8_t I2C_ADDRESS = 0x00;I2C_HandleTypeDef hi2c1;int main(void){HAL_StatusTypeDef status = HAL_ERROR; uint8_t buf[3] = {0,};uint32_t temp_data_a; uint32_t temp_data_o; __IO float T; __IO float To;while (1){ HAL_I2C_Mem_Read(&hi2c1, 0x00, 0x06, I2C...

Hi dear friends, How can i have an exact delay ? for example when i writhe HAL_Delay(1); i don't have exactly 1ms but 1,6ms for example. For example in my case between 2 PWM functions, Start and Stop, do you have any idea about that? Thank you

I am working with an STM32F429 in a project and I am seeing random BusFaults, captured against erroneous execution of ldr r4, [r2, #12]. This is one example.

I am working with an STM32F429 in a project and I am seeing random BusFaults in random code locations, very infrequently but obviously problematic. I traced one earlier to this instruction ldr r4, [r2, #12].You'll see from the screen capture attached...

STM32U575 TIM1 Capture Compare interrupt fails to count pulses of a temperature sensor

HelloTIM1 Capture Compare interrupt of STM32U575 - fails to count pulses of a temperature sensors connected to its channels. We use few temperature sensors of the same kind: LMT01 of TI(https://www.ti.com/lit/ds/symlink/lmt01.pdf?ts=1683467074947&ref...