EFM32WG990 Datasheet, PDF (33/80 Pages) List of Unclassifed Manufacturers – The EFM32 MCUs are the world’s most energy friendly microcontrollers.

Preliminary
...the world's most energy friendly microcontrollers
Figure 3.24. Calibrated HFRCO 11 MHz Band Frequency vs Temperature and Supply Voltage
11.15
11.10
11.05
11.00
10.95
-4 0 ° C
25°C
85°C
10.90
10.85
10.80
1.8
2.2
2.6
3.0
3.4
3.8
Vdd [V]
11.20
11.15
11.10
1.8 V
3V
3.8 V
11.05
11.00
10.95
10.90
10.85
10.80
–4 0
–1 5
5
25
45
65
85
Tem perat ure [ ° C]
Figure 3.25. Calibrated HFRCO 14 MHz Band Frequency vs Temperature and Supply Voltage
14.15
14.10
-4 0 ° C
25°C
85°C
14.05
14.00
13.95
13.90
13.85
1.8
2.2
2.6
3.0
3.4
3.8
Vdd [V]
14.15
14.10
1.8 V
3V
3.8 V
14.05
14.00
13.95
13.90
13.85
–4 0
–1 5
5
25
45
65
85
Tem perat ure [ ° C]
Figure 3.26. Calibrated HFRCO 21 MHz Band Frequency vs Temperature and Supply Voltage
21.2
21.1
-4 0 ° C
25°C
85°C
21.0
20.9
20.8
20.7
20.6
1.8
2.2
2.6
3.0
3.4
3.8
Vdd [V]
21.2
21.1
1.8 V
3V
3.8 V
21.0
20.9
20.8
20.7
20.6
–4 0
–1 5
5
25
45
65
85
Tem perat ure [ ° C]
2013-05-06 - EFM32WG990FXX - d0203_Rev1.10
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