Datasheet
Electrical characteristics STM32L431xx
116/200 DocID028800 Rev 1
VDD
(MSI)
(2)
MSI oscillator
frequency drift
over V
DD
(reference is 3 V)
MSI mode
Range 0 to 3
V
DD
=1.62 V
to 3.6 V
-1.2 -
0.5
%
V
DD
=2.4 V
to 3.6 V
-0.5 -
Range 4 to 7
V
DD
=1.62 V
to 3.6 V
-2.5 -
0.7
V
DD
=2.4 V
to 3.6 V
-0.8 -
Range 8 to 11
V
DD
=1.62 V
to 3.6 V
-5 -
1
V
DD
=2.4 V
to 3.6 V
-1.6 -
F
SAMPLING
(MSI)
(2)(4)
Frequency
variation in
sampling mode
(3)
MSI mode
T
A
= -40 to 85 °C - 1 2
%
T
A
= -40 to 125 °C - 2 4
CC jitter(MSI)
(4)
RMS cycle-to-
cycle jitter
PLL mode Range 11 - - 60 - ps
P jitter(MSI)
(4)
RMS Period jitter PLL mode Range 11 - - 50 - ps
t
SU
(MSI)
(4)
MSI oscillator
start-up time
Range 0 - - 10 20
us
Range 1 - - 5 10
Range 2 - - 4 8
Range 3 - - 3 7
Range 4 to 7 - - 3 6
Range 8 to 11 - - 2.5 6
t
STAB
(MSI)
(4)
MSI oscillator
stabilization time
PLL mode
Range 11
10 % of final
frequency
- - 0.25 0.5
ms
5 % of final
frequency
--0.51.25
1 % of final
frequency
---2.5
Table 48. MSI oscillator characteristics
(1)
(continued)
Symbol Parameter Conditions Min Typ Max Unit
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