how much current consumption nRF52 in sleep mode and RTC on?
According to the nRF52832 Product Specification, the chip will have the following current consumption:
System ON, no RAM retention + RTC + LFRC = 1.2uA + 0.1uA + 0.6uA = 1.9uA
If need RAM to be retained in System On mode you have to add an additional 20nA per 4kB RAM block that is used.
The LF crystal oscillator uses less current than the RC. You can see the run current for the LFXO and LFRC on this Infocenter page.
