EFM32LG330 Datasheet, PDF (24/66 Pages) Silicon Laboratories – High Performance 32-bit processor up to 48 MHz memory Protection Unit

3.9.4 HFRCO
Table 3.12. HFRCO
Preliminary
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Symbol
Parameter
Condition
28 MHz frequency band
21 MHz frequency band
f_HFRCO
Oscillation frequency, V_DD= ^{14 MHz frequency band}
3.0 V, T_AMB=25°C
11 MHz frequency band
7 MHz frequency band
1 MHz frequency band
t_{HFRCO_settling} Settling time after start-up
I_HFRCO
Current consumption
DC_HFRCO
Duty cycle
TUNESTEP_H- Frequency step for LSB
FRCO
change in TUNING value
1_{7 MHz for devices with prod. rev. < 19.}
2_{1 MHz for devices with prod. rev. < 19.}
f_HFRCO = 14 MHz
f_HFRCO = 28 MHz
f_HFRCO = 21 MHz
f_HFRCO = 14 MHz
f_HFRCO = 11 MHz
f_HFRCO = 6.6 MHz
f_HFRCO = 1.2 MHz
f_HFRCO = 14 MHz
Min
Typ
Max
Unit
28
MHz
21
MHz
14
MHz
11
MHz
6.6¹
MHz
1.2²
MHz
0.6
Cycles
106
µA
93
µA
77
µA
72
µA
63
µA
22
µA
48.5
50
51 %
0.3
%
Figure 3.8. 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]
2013-06-28 - EFM32LG330FXX - d0110_Rev1.10
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