EFM32HG210 Datasheet, PDF (31/69 Pages) Silicon Laboratories – Output state retention and wake-up from Shutoff Mode

Preliminary
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Figure 3.25. 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]
3.9.5 AUXHFRCO
Table 3.12. AUXHFRCO
Symbol
Parameter
Condition
21 MHz frequency band
f_AUXHFRCO
Oscillation frequen-
cy, V_DD= 3.0 V,
T_AMB=25°C
14 MHz frequency band
11 MHz frequency band
7 MHz frequency band
1 MHz frequency band
t_{AUXHFRCO_settling}Settling time after
start-up
f_AUXHFRCO = 14 MHz
TUNESTEP_AUX-Frequency step
HFRCO
for LSB change in
TUNING value
3.9.6 USHFRCO
Table 3.13. USHFRCO
Min
Typ
20.37
13.58
10.67
6.40
1.15
Max
Unit
21.0
21.63 MHz
14.0
14.42 MHz
11.0
11.33 MHz
6.60
6.80 MHz
1.20
1.25 MHz
0.6
Cycles
0.3
%
Symbol
f_USHFRCO
TC_USHFRCO
VC_USHFRCO
Parameter
Condition
Min
Typ
Max
Unit
No Clock Recovery, Full Tem-
perature and Supply Range
47.10
48.00
48.90 MHz
Oscillation frequen-
cy
No Clock Recovery, 25°C, 3.3V
USB Active with Clock Recov-
ery, Full Temperature and Sup-
ply Range
47.50
47.88
48.00
48.00
48.50 MHz
48.12 MHz
Temperature coeffi- 3.3V
cient
0.0175
%/°C
Supply voltage co- 25°C
efficient
0.0045
%/V
2015-05-06 - EFM32HG210FXX - _Rev0.91
31
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