Hi Tom,
I’ve been doing some testing and have not been able to get the XIAO_MG24 to run at less than 80uA in Sleep Mode (EM2) using Simplicity Studio (Silabs’ SDK 2024.12.1) code.
This is using a Silabs Zigbee Sleepy End Device app. With this current consumption however, I probably wouldn’t be using the XIAO MG24 as a “Zigbee/BLE battery low power” device. ~5uA is the norm (MG24 EM2). I could however use it as a Zigbee Green Power device - may try that later…
I don’t bother with unused pins; Silabs’ EFR/EFM chips don’t require setting mode or state if unused, and leakage is nA.
I do disable the on-board devices and place the flash into shutdown state.
My Setup.
Power is 3.7V from the battery pads.
Obviously the USB-Serial is disconnected.
My Wake Pin is PA5 (for both EM2 and EM4 wake).
Flashing (SWD) and Energy Profiling is done with the Silabs WSTK.
Gary.