STM32F303 Microcontroller open drain GPIO, Can it reach / be pulled up to 5 Volts?
I have looked through the user manual of the microcontroller which is namely a stm32f303vct6 but I couldn't find anything literally anything related to whether the pins can be pulled up to 5V or not, and if so then which pins exactly are 5V tolerant..


This information is in Table 13 ("STM32F303xB/STM32F303xC pin definitions") of the microcontroller datasheet -- it starts on page 35 of the current revision.

All pins with the letters "FT" ("five-volt tolerant") or "FTf" in the "I/O structure" column are 5V tolerant, and can be pulled up to 5V. Make sure that the pin is configured as open-drain, and internal pullup/pulldown resistors are disabled.