GPIO pin leakage current is irrespective of the pin being configured for input or output. The value of 2nA is the absolute value. It an be +/- 2nA, which means the current can flow into the device or flow out of the device. As of now the value is characterized only at 25℃.
Thank you for your answer.
I understand that the leakage of the output current is the same as the leakage of the input current.
How much do you expect Input leakage current to change with VDDD and temperature?
We notice max of -4.138nA leakage at 80C,5.5V across 3 samples. We expect the current to be around this region. I hope this data is helpful.