GPIO set time

[Thangaraj]

NRF52,S132 soft device, I am trying to toggle GPIO 10 (NFC pins Enabled as GPIO)in a 1us Timer, But its not happening , What may be the issue? Am using Timer 4. What is the minimum time taken on GPIO toggling

[Øyvind Karlsen]

The minimum time for GPIO toggling depends on the load capacitance (higher capacitance higher rise/fall time), the values are on a nanosecond scale and can be found in the electrical specification for the GPIO module.