STM32 MCUs Products

set LPUART TX pin to level 1 while in Stopmode2 (STM32L476)

Hello,How can I set the STM32L476 LPUART TX to level 1 while the device is in StopMode2?The LPUART clock is the LSE clock.Best regardsMich.

stm32f091 rtc error

Hi. As you can see in the picture I haven't got the LSE crystal resonator so I have 40 Khz as RTC input. The datetime is not well calculated.How can I resolve the problem? Is there a way to have an affidable rtc whitout the resonator?

My IWDG init (stm32_IwdgSetup(..)) halts – why?

Hi.I use the STM32F107 and shall implement the IWDG to supervise my SW.But my IWDG init-code (stm32_IwdgSetup(..)): 1) stops/halts the MCU in the "IWDG->KR = 0xCCCC" statement below 2) MCU never proceeds/advances from the "IWDG->KR = 0xCCCC" statemen...

Missing bytes in UART frame through dma

Hi,​I implemented a UART communication using the DMA feature on a STM32L4 microcontroller.DMA RxCallback is called on UART Idle line detection interrupt as I d'ont know the length of the incomming frame. The baudrate is 230400 and I receive a frame e...

How to use PWM function of Tim1 on STM32F1 to produce 6 steps trapezoidal scheme PWM wave?

Pleaese give me some idea for this control theory. The output pin should be PWM_A/_B/_C and RESET_A/_B/_C as shown on picture. If I give specific duty cycle and frequency, how to implement it ?

How to communicate with external ADC which up to 200 Msps or more??

Hi all, I hope someone could help me on this.I have a trouble on read out ADC from a signal 1Mhz, and my current MCU can't read ADC with this high frequency signal. So I decide to use external ADC IC. I found some from Analog device which can support...

Dear Sir, I would like to know how many PWM signals out can be created simultaneously on STM32F4. Cause I would like to control 5 BLDC. That is my concern. Cheers, George.