I am currently developing a board with the npm1100 and nrf52832. I want to make use of the npm1100 ship mode to achieve a very lower power off mode.
I want to use a button connected to SHPHLD to power on again but I also want to connect the same button to a GPIO pin on the MCU.
If the button is connected to both SHPHLD and a GPIO pin I am concerned this will connect VBAT to the MCU and will slowly drain the battery. Also VBAT is 3.7 where as VDD is only 3.0.
I also considered using a simple MOSFET level shifter but I'm concerned this will also drain the battery.
What is the recommended way to share the button input with SHPHLD and a GPIO pin while minimizing power consumption?