STM32F3 GPIO current sourcing question

song · ‎2015-11-30

Posted on November 30, 2015 at 10:52

Hi, I am using STM32F301. If I configure the GPIO pin to be output mode, and configure it to be open-drain with pull up, what would be the pin's current sourcing capability? What is the value of the internal pull-up resistor? If I need to use this pin to switch a MOSFET, is it better to configure it to be OD without pull up or pull down, and instead using an external pull up resistor?

#gpio-open-drain

Amel NASRI · ‎2015-12-03

Posted on December 03, 2015 at 10:05

Hi David_Lin,

You should find the information you are looking for about the GPIO characteristics in the STM32F301

http://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/DM00093332.pdf

(chapter: I/O port characteristics).

-Mayla-

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