Datasheet

DocID022152 Rev 8 95/202
STM32F405xx, STM32F407xx Electrical characteristics
Table 27. Switching output I/O current consumption
Symbol Parameter Conditions
(1)
I/O toggling
frequency (f
SW
)
Typ Unit
I
DDIO
I/O switching
current
V
DD
= 3.3 V
(2)
C = C
INT
2 MHz 0.02
mA
8 MHz 0.14
25 MHz 0.51
50 MHz 0.86
60 MHz 1.30
V
DD
= 3.3 V
C
EXT
= 0 pF
C = C
INT
+ C
EXT
+ C
S
2 MHz 0.10
8 MHz 0.38
25 MHz 1.18
50 MHz 2.47
60 MHz 2.86
V
DD
= 3.3 V
C
EXT
= 10 pF
C = C
INT
+ C
EXT
+ C
S
2 MHz 0.17
8 MHz 0.66
25 MHz 1.70
50 MHz 2.65
60 MHz 3.48
V
DD
= 3.3 V
C
EXT
= 22 pF
C = C
INT
+ C
EXT
+ C
S
2 MHz 0.23
8 MHz 0.95
25 MHz 3.20
50 MHz 4.69
60 MHz 8.06
V
DD
= 3.3 V
C
EXT
= 33 pF
C = C
INT
+ C
EXT
+ C
S
2 MHz 0.30
8 MHz 1.22
25 MHz 3.90
50 MHz 8.82
60 MHz -
(3)
1. C
S
is the PCB board capacitance including the pad pin. C
S
= 7 pF (estimated value).
2. This test is performed by cutting the LQFP package pin (pad removal).
3. At 60 MHz, C maximum load is specified 30 pF.