Skip to main content
GBA
Visitor II
Sep 23, 2025 4:02 PM UTC
Solved

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

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.

This topic has been closed for replies.
mƎALLEm
mƎALLEmBest answer
ST Technical Moderator
Sep 23, 2025 4:22 PM UTC

Hello @GBA and welcome to the community,

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

From the datasheet page 172:

mALLEm_1-1758644503053.png

 

 

To give better visibility on the answered topics, please click "Best answer" on the reply which solved your issue or answered your question.
View in thread

3 replies

mƎALLEm
mƎALLEmBest answer
ST Technical Moderator
Sep 23, 2025 4:22 PM UTC

Hello @GBA and welcome to the community,

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

From the datasheet page 172:

mALLEm_1-1758644503053.png

 

 

To give better visibility on the answered topics, please click "Best answer" on the reply which solved your issue or answered your question.
    TDK
    TDK
    Sep 23, 2025 4:23 PM UTC

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

    TDK_0-1758644620792.png

     

    "If you feel a post has answered your question, please click ""Accept as Solution""."
      Andrew Neil
      Andrew Neil
      Super User
      Sep 23, 2025 4:56 PM UTC

      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.
      Terms & ConditionsAccessibility statement