Hello @hemanths,
The higher the current the bigger the voltage drop from VDD/VSS.
The datasheet specifies the min. guaranteed current at
VOL <= 0.7V
VOH >= VDD_HV_A/B - 0.7V
for all the GPIO types.
danielmartynek_0-1708512129865.png
Refer to the IBIS model of the device for more information.
Best regards,
Daniel