STM32W108C8 Datasheet, PDF (254/275 Pages) –

Electrical characteristics
STM32W108C8
14.5.3 Low frequency internal clock characteristics
Table 60. Low-frequency RC oscillator characteristics
Parameter
Test conditions
Min.
Typ.
Max.
Unit
Nominal Frequency
Analog trim step size
After trimming
–
9
10
11
kHz
–
1
–
kHz
Supply dependence
For a voltage drop from 3.6 V
to 3.1 V or 2.6 V to 2.1 V
–
–
1
%
(without re-calibration)
Frequency variation with
Frequency dependence
temperature for a change
from -40 oC to +85oC
–
2
–
%
(without re-calibration)
14.5.4
Low frequency external clock characteristics
Table 61. Low-frequency crystal oscillator characteristics
Parameter
Test conditions
Min. Typ. Max. Unit
Frequency
–
–
32.768
–
kHz
Accuracy
Load cap xin
Initial, temperature, and
ageing
–
-100
–
+100 ppm
–
27
–
pF
Load cap xout
Crystal ESR
Start-up time
Current consumption
–
–
–
–
–
–
At 25°C, VDD_PADS = 3.0 V –
18
–
pF
–
100
kΩ
–
2
s
–
0.5
µA
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