How much current can a GPIO port of stm32n6 can source and sink?

GBA · ‎2025-09-23

I am working with an STM32N6 microcontroller and need clarification about the electrical characteristics of its GPIO pins. How much current a GPIO can source and sink. Is it in micro Amps or mili Amps.

mƎALLEm · ‎2025-09-23

Hello @GBA and welcome to the community,

STM32N6 GPIO pin can source or sink up to ±20 mA.

From the datasheet page 172:

To give better visibility on the answered topics, please click on "Accept as Solution" on the reply which solved your issue or answered your question.

TDK · ‎2025-09-23

20 mA source or sink. See the datasheet for details.

If you feel a post has answered your question, please click "Accept as Solution".

Andrew Neil · ‎2025-09-23

As the others have said, this is stated in the datasheet.

Note that there is also a limit on the sum total of all GPIOs ...

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.