Microcrystal can make these things to run at <50nA. https://www.microcrystal.com/en/products/real-time-clock-rtc...
All the BLE manufacturers are 1uA plus. It's infuriating.
Microcrystal can make these things to run at <50nA. https://www.microcrystal.com/en/products/real-time-clock-rtc...
All the BLE manufacturers are 1uA plus. It's infuriating.