STM32 MCUs Products

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Resolved! STM32U5 LSE/PC13 Errata and LSE bypass mode

The STM32U5 Errata Sheet (ES0499 rev 5 is the one I am looking at) has errata 2.2.1 which says: "The LSE frequency can be incorrect when PC13 is used as output for RTC_OUT1 or TAMP_OUT2 function". The workaround: "The RTC_OUT2 function must be used ...

How do you set up LPUART1 with an STM32L452RE?

Hi i'm trying to get the LPUART (PA3, PA2) pins to communicate with my computer via the serial port, but i can't get anything to work. Here is what i'm trying to use at the moment...Sysclock Config:#pragma once   extern "C" void SystemClock_Config(vo...

RBamf.1 by Associate III
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  • 2 replies
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UART behavior on reception error, flags set, e.g. PE, NE, FE

Alright, I am searching the STM32L4 reference manual (RM0351), and as far as I can see, there is no description of how the UART is expected to behave when various "reception error" flags are set. In my case, I am observing NE when resetting a modem, ...

apullin by Associate II
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  • 1 replies
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Caprure compare Interrupt

I try to generete interrupt when CNT register reach any value. But It generete when I enabled to interrupt EGR bit is always zero. when I try to change accept first bit not effected.It is configuration  capture = TIM_GetCapture2(ExternalOSCTimer); TI...

0693W00000Y9bCXQAZ.png 0693W00000Y9bCSQAZ.png
hdemi.1 by Associate III
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  • 3 replies
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STM32F407 RTC sporadically showing future time

Most of the future time occurs around 12:00 in the morning, here are the instances captured on the device:1. The actual time is: 2023-01-11 11:59:55, the STM32F407 RTC time is: 2023-01-12 12:00:002. The actual time is: 2022-12-31 11:59:58, the STM32F...

zhuij.1 by Associate II
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  • 5 replies
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