STM32 MCUs Products

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Resolved! STM32H7R3 power design: VDDXSPI, VREF+/-, VDDA ?

HiDo QUAD SPI require power on the VDDXSPI power pins?ADCs, what is the voltage reference buffer, VREF+ and VREF- , voltages? Can the internal reference buffer be used if VDDA is 3.3V and I want full scale 0-3.3V ADC conversion range?krØystein

oysteikr by Associate II
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Resolved! STM32G0B0: RM0454 link out-of-date ?

The Reference Manual (RM0454) of the STM32G0B0 points to an old 2020 revision while on the website it shows 2025.I believe this is a mistake since there should be a newer revision of this RM with the fixed Flash section (STM32G0B0CE) unless ST only f...

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Resolved! STM32 USB Host HUB support with an MSC device

Here comes another query about the status of a HUB device for the USB Host library. I have been working with the driver from herehttps://github.com/moribr/STM32F4HUB/blob/master/Project/Middlewares/ST/STM32_USB_Host_Library/Class/HUB/usbh_hub.cand ha...

PCevo.1 by Associate III
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Resolved! Weird PWM behaviour for pin PB4 on f103c8t6

Hello. I have a custom board with original f103c8t6 (sampled from eStore). PWM for pin PB4 is not functional, but bit banging with gpio write works. If tim3 respective channel is configured as pwm output, the output is stuck at VCC.  I configured the...

cosminrs by Associate
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STM32G474RET6 BOR level

Hello everyone, I am quite new to this and I am using the STM32G474RET6 with BOR level 4. I changed the BOR level to level 0 and the board did not work properly. After changing it back to level 4, everything worked fine again. Is there any relationsh...

Resolved! STM32H743 FDCAN bootloader with Classic CAN

Hello everyone! In our system we have a set of subsystem that uses F4/F7 MCUs and one - with STM32H743 MCU. We want to use system CAN bootloader for all of them. Everything seems ok, except STM32H743 device. From AN2606 we know that it starts in boot...

CuuuSyn by Associate II
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STM32N657 (Nucleo-N657X0) Core is locked up.

I followed the steps in this demo workshop to upload a simple program to toggle LEDs to the Nucleo-N657X0 board. The project is in FSBL. I can run the code in debug mode and upload the signed program to the external flash on the Nucleo-N657X0 board w...

Screenshot 2025-08-06 183620.png
JCKodomo by Associate
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(SDMMC) What's the point of DTEN?

I'm referring to RM0481 Rev 4 and I'm currently working on my SDMMC driver. For one reason and another, I need to start a data transfer for multiple read/write commands, but without sending the command again (because it has already been done so).The ...

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PhucXDoan by Associate III
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