Nrf9160 RTC specs anywhere?

Question

I haven't been able to find documentation for the RTC or RTCs on the 9160. I want to know what the drift is and which RTC timers are available in various stages of sleep when using something like edrx or psm

Cyril · Accepted Answer

Hello, I think you can rely on having the MCU draws about 3uA while keeping the calendar active. https://www.nordicsemi.com/DocLib/Content/Product_Spec/nRF9160/latest/_tmp/alta-nRF9160/autodita/CURRENT/parameters-id_current_sleep 
 I never used Zephyr, but looking at the documentation, you can configure Zephyr to several power modes: https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/subsystems/power_management.html 
 
 You should try that example and measure current: https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/samples/subsys/power/power_mgr/README.html 
 To my mind, there is no need for an external RTC. 
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Nrf9160 RTC specs anywhere?

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