EFM8BB2 Datasheet, PDF (24/55 Pages) Silicon Laboratories – The EFM8BB2 highlighted features are listed below

4.4 Typical Performance Curves
EFM8BB2 Data Sheet
Electrical Characteristics
Figure 4.1. Typical Operating Supply Current using HFOSC0
Figure 4.2. Typical Operating Supply Current using HFOSC1
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