Hi,
I am working on a project that involves TTP223 touch buttons and I am using the "button" example to test my project. I have a Power Profiler Kit 2, and I have noticed a large increase in current consumption from my nRF52840 DK when the touch button board is connected to the digital input for button0 (pin 11). With both the DK and the touch board powered on but the touch output not connected to the button0 input of the DK, I measured about 250 uA. With the same setup but with the touch button output connected to the button0 input, I measured about 450 uA. Not sure if this is worth mentioning, but I can plug the touch button output into other pins on the DK without seeing this current increase, so maybe this has something to do with the pin interrupt on pin 11?
I've also used the PPK2 in "Ampere meter" mode with an external power supply to isolate the components and I see that the large increase in current comes from the DK, which consumes about 445 uA while the touch board consumes about 3 uA. Keep in mind all of these measurements are without the button being pressed or the LED being on.
Is this the expected behavior of the nRF52840 DK or have I set something up wrong?
I am using nRF Connect for Desktop (PC) v4.2.0, nRF Connect SDK v2.5.1, nRF Connect for VS Code v2023.11.301. My nRF52840 DK is V3.0.1.
