EFM32WG332 Datasheet, PDF (31/76 Pages) Silicon Laboratories – Operation from backup battery when main power drains out

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Figure 3.22. Calibrated HFRCO 21 MHz Band Frequency vs Supply Voltage and Temperature
21.2
21.2
21.0
21.0
20.8
20.8
20.6
20.6
20.4
- 40°C
25°C
85°C
20.2
2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6 3.8
Vdd [V]
20.4
20.2
–4 0
2.0 V
3.0 V
3.8 V
–1 5
5
25
45
65
85
Tem perature [°C]
Figure 3.23. Calibrated HFRCO 28 MHz Band Frequency vs Supply Voltage and Temperature
28.2
28.0
27.8
27.6
27.4
27.2
27.0
- 40°C
25°C
85°C
26.8
2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6 3.8
Vdd [V]
28.4
28.2
28.0
27.8
27.6
27.4
27.2
27.0
26.8
–4 0
2.0 V
3.0 V
3.8 V
–1 5
5
25
45
65
85
Tem perature [°C]
2014-06-13 - EFM32WG332FXX - d0191_Rev1.40
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