
Electrical characteristics
STM32F051x4 STM32F051x6 STM32F051x8
Symbol
Table 30. Switching output I/O current consumption
Parameter
Conditions(1)
I/O toggling
frequency (fSW)
Typ
4 MHz
0.07
VDDIOx = 3.3 V
C =CINT
VDDIOx = 3.3 V
CEXT = 0 pF
C = CINT + CEXT+ CS
VDDIOx = 3.3 V
CEXT = 10 pF
C = CINT + CEXT+ CS
ISW
I/O current
consumption
VDDIOx = 3.3 V
CEXT = 22 pF
C = CINT + CEXT+ CS
1. CS = 7 pF (estimated value).
VDDIOx = 3.3 V
CEXT = 33 pF
C = CINT + CEXT+ CS
VDDIOx = 3.3 V
CEXT = 47 pF
C = CINT + CEXT+ CS
C = Cint
VDDIOx = 2.4 V
CEXT = 47 pF
C = CINT + CEXT+ CS
C = Cint
8 MHz
16 MHz
24 MHz
48 MHz
4 MHz
8 MHz
16 MHz
24 MHz
48 MHz
4 MHz
8 MHz
16 MHz
24 MHz
48 MHz
4 MHz
8 MHz
16 MHz
24 MHz
4 MHz
8 MHz
16 MHz
24 MHz
4 MHz
8 MHz
16 MHz
4 MHz
8 MHz
16 MHz
24 MHz
0.15
0.31
0.53
0.92
0.18
0.37
0.76
1.39
2.188
0.32
0.64
1.25
2.23
4.442
0.49
0.94
2.38
3.99
0.64
1.25
3.24
5.02
0.81
1.7
3.67
0.66
1.43
2.45
4.97
Unit
mA
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