Hi,
What is the max current which is allowed to flow into GPIO pin?
The motivation for this question is that I though using GPIOs for user LED indication, active LOW by connecting:
GPIO Pin —> LED —> Resistor —> 3.3V.
So when the GPIO is HIGH - LED will be OFF (not enough for Vf of the LED)
when the GPIO is LOW - LED will be ON - current flows into the pin.
Thanks,
Matan
Hi matan.hershkovitz,
Are you using the devkit or custom board for Orin Nano?
What’s the Jetpack version in use?
Are you adding a pull-up resistor for LED?
Can the LED be controlled through GPIO w/o the resistor connected in your case?
Hi Kevin,
I’m designing a new custom carrier board.
I wanted to have some pins to be used to user-defined LEDs.
Please use any available GPIOs which can then drive transistors/MOSFETs which can drive the LEDs.
I’m asking about driving LED without MOSFET, and in inverse polarity.
Connecting the LED like this: GPIO Pin —> LED —> Resistor —> 3.3V.
In this way, the LED will be ON if the GPIO=LOW and OFF is the GPIO=HIGH
Please refer to Jetson Orin Nano Series Modules Data Sheet Log in | NVIDIA Developer
If using GPIOs through level shifter, please refer to Jetson Nano Developer Kit 40-Pin Expansion Header GPIO Usage Considerations Applications Note Log in | NVIDIA Developer
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I’m sorry, but this doesn’t answer my question.
I need to know how much current the GPIO can sink (when configured as output).
IOL=1mA is the current GPIO can sink as per the datasheet.
As far as I understand, IOL stands for source current capability, no?
IOL is when it is sinking current. IOH is when current is sourced from GPIO with a negative sign indicating current flowing out.
OK. Thanks for the clarification.
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