STM32 MCUs Products

Information about weird LPTIM compare match behavior. (stm32L462RE)

Datasheet: "Interrupt flag is raised when the content of the Counter register (LPTIM_CNT) matches the content of the compare register (LPTIM_CMP)."Some forums: "Compare match Interrupt flag is raised if CNT >= CMP and not CNT = CMP"(Cf. https://commu...

why i enable the predriver and external interrupt at the same time, the program will enter the external interrupt at the PWM frequency

just comment the code whitch set the pin to enable the predriver device, the interrupt will be normal​, hope your reply, thank you.

hi, i am new to stm32, i am doing a project on fan controller module, i need to measure the powerfactor of zero crossing of my current and voltage waveform displaying on CRO. firstly i need to select two channels for input capture to capture values

on those rising edge with interrupt and i need to count each time.secondly i need to use another timer and set its frequency to 100KHZ with interrupt mode. i need to use counter to count at each interrupt. thirdly based on that counter i need to cal...

STM32H725 ADC3 circular DMA not working? (It does with ADC1)

I've been stumbled upon this issue for a week now.On STM32H725ZG, ADC3 circular DMA is not working.A test codelet below, designed to demonstrate the issue, repeatedly takes 12-bit readings from PC0 (ADC123_INP10) and PC1 (ADC123_INP11) with ADC1 or A...

Hi , I would like to know if there is a way to use DMA to get the TIM1 advanced timer update events ? I can successfully trigger an IRQ but having problems setting a DMA to trigger on every update. I am using STM32 L4 MCU.

I am using the advanced timer TIM1 on STM32L476RG MCU. I have configured the timer in slave reset mode as given in section 30.3.26 of the reference manual. The counter resets every rising edge. I want to use this mode to measure low frequencies such ...

Hi, i would like to know which chip is under name ST A267BB (100 pin case ).

Three phase AC input to 5V/500mA transformerless

A) Input is 3 phase acB) Output required is 5Vdc/500mA C) Should be trasnformless, inductor can be usedI checked VIPER318HD, ( https://eds.st.com/console/#/app/acdc/ic_acdc_catalogs/filter/%5B%22buck%22%5D/selected/viper318hd:buck ) & designed using ...

Low power modes on STM32L4 series MCU

Hi, Below is my requirement: Need to send a DAC sample every 2ms (on 32KHZ clock) Every 12 sec will do an access to external flash to copy a block of memory (on HSI clock)how can i accomplish this? am new to microcontroller, can anyone help me with s...

DWT_CYCCNT does not seems to count cycle

I'm using follow code:volatile unsigned int *DWT_CYCCNT = (volatile unsigned int *)0xE0001004; //address of the register volatile unsigned int *DWT_CONTROL = (volatile unsigned int *)0xE0001000; //address of the register volatile unsigned int *DWT_L...