Electrical characteristics
STM32F405xx, STM32F407xx
1. VDD = 3.3 V, TA = –40 to 105 °C unless otherwise specified.
2. Based on characterization, not tested in production.
3. Guaranteed by design, not tested in production.
Low-speed internal (LSI) RC oscillator
(1)
Table 34. LSI oscillator characteristics
Symbol
Parameter
Min
Typ
Max
Unit
(2)
fLSI
Frequency
17
-
32
15
47
40
kHz
µs
(3)
tsu(LSI)
LSI oscillator startup time
(3)
IDD(LSI)
LSI oscillator power consumption
-
0.4
0.6
µA
1.
VDD = 3 V, TA = –40 to 105 °C unless otherwise specified.
2. Based on characterization, not tested in production.
3. Guaranteed by design, not tested in production.
Figure 34. ACC versus temperature
LSI
50
40
30
20
10
0
max
avg
min
-10
-20
-30
-40
-45 -35 -25 -15
-5
5
15
25
35
45
55
65
75
85
95 105
Temperature(°C)
MS19013V1
5.3.10
PLL characteristics
The parameters given in Table 35 and Table 36 are derived from tests performed under
temperature and V supply voltage conditions summarized in Table 14.
DD
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