Preliminary
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3.9.3 LFRCO
Table 3.10. LFRCO
Symbol
Parameter
Condition
Min
Typ
Max
Unit
fLFRCO
Oscillation frequen-
cy , VDD= 3.0 V,
TAMB=25°C
32.768
150
kHz
tLFRCO
Startup time not in-
cluding software
calibration
µs
ILFRCO
Current consump-
tion
190
1.5
nA
%
TUNESTEPL- Frequency step
for LSB change in
FRCO
TUNING value
Figure 3.20. Calibrated LFRCO Frequency vs Temperature and Supply Voltage
42
40
38
36
34
32
30
42
40
38
36
34
32
30
- 40°C
25°C
85°C
1.8 V
3 V
3.8 V
1.8
2.2
2.6
3.0
3.4
3.8
–40
–15
5
25
45
65
85
Vdd [V]
Temperature [°C]
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2013-10-09 - EFM32ZG108FXX - d0063_Rev0.60
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