EFR32FG12P432F Datasheet, PDF (75/183 Pages) Silicon Laboratories – EFR32FG12 Flex Gecko Proprietary Protocol SoC Family Data Sheet

4.1.12.5 Auxiliary High-Frequency RC Oscillator (AUXHFRCO)
EFR32FG12 Flex Gecko Proprietary Protocol SoC Family Data Sheet
Electrical Specifications
Table 4.37. Auxiliary High-Frequency RC Oscillator (AUXHFRCO)
Parameter
Symbol
Test Condition
Min
Typ
Frequency accuracy
f_{AUXHFRCO_ACC} At production calibrated frequen-
-3
—
cies, across supply voltage and
temperature
Start-up time
t_AUXHFRCO
f_AUXHFRCO ≥ 19 MHz
—
400
4 < f_AUXHFRCO < 19 MHz
—
1.4
f_AUXHFRCO ≤ 4 MHz
—
2.5
Current consumption on all I_AUXHFRCO
supplies
f_AUXHFRCO = 38 MHz
f_AUXHFRCO = 32 MHz
—
193
—
157
f_AUXHFRCO = 26 MHz
—
135
f_AUXHFRCO = 19 MHz
—
108
f_AUXHFRCO = 16 MHz
—
100
f_AUXHFRCO = 13 MHz
—
77
f_AUXHFRCO = 7 MHz
—
53
f_AUXHFRCO = 4 MHz
—
29
f_AUXHFRCO = 2 MHz
—
28
f_AUXHFRCO = 1 MHz
—
27
Coarse trim step size (% of
period)
SS_AUXHFR-
CO_COARSE
—
0.8
Fine trim step size (% of pe- SS_AUXHFR-
riod)
CO_FINE
—
0.1
Period jitter
PJ_AUXHFRCO
—
0.2
4.1.12.6 Ultra-low Frequency RC Oscillator (ULFRCO)
Max
Unit
3
%
—
ns
—
μs
—
μs
213
μA
175
μA
151
μA
122
μA
113
μA
88
μA
63
μA
36
μA
34
μA
31
μA
—
%
—
%
—
% RMS
Parameter
Oscillation frequency
Table 4.38. Ultra-low Frequency RC Oscillator (ULFRCO)
Symbol
f_ULFRCO
Test Condition
Min
Typ
0.95
1
Max
Unit
1.07
kHz
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