I’m confused about the flash storage requirement? It can be shut down when not in use, ie “Deep Sleep”. The IMU is “de-powered”, along with some other devices that can’t be used in deep sleep.
Deep Sleep current is in the ~40uA range on the XIAO MG24 - I think that’s (very high) due to the SAMD21 (OpenOCD-SWD) “interference”.
As a comparison.
I normally get ~1uA with an 'MG24 and additional components in deep sleep (EM4) and ~5uA in “Light Sleep” (EM2).
On the XIAO MG24
EM4 = ~40uA
EM2 = ~150uA
EDIT>
Corrected value
EM4 = ~1.5uA
EM4 starts the application from the beginning (ie a reset).
EM2 allows the application to continue from where it entered sleep mode.
If 40uA is too high (deep sleep), then I’d suggest using something other than the XIAO MG24. Just depends on your requirements.
How much EEProm do you require for your application?
How often are the read/writes?