Datasheet

DocID025409 Rev 8 61/121
STM32F334x4 STM32F334x6 STM32F334x8 Electrical characteristics
101
The test pin is configured in push-pull output mode and is toggled by software at a fixed
frequency.
Table 32. Switching output I/O current consumption
Symbol Parameter Conditions
(1)
1. CS = 5 pF (estimated value).
I/O toggling
frequency (f
SW
)
Typ. Unit
I
SW
I/O current
consumption
V
DD
= 3.3 V
C
ext
= 0 pF
C = C
INT
+ C
EXT
+ C
S
2 MHz 0.90
mA
4 MHz 0.93
8 MHz 1.16
18 MHz 1.60
36 MHz 2.51
V
DD
= 3.3 V
C
ext
= 10 pF
C = C
INT
+ C
EXT
+C
S
2 MHz 0.93
4 MHz 1.06
8 MHz 1.47
18 MHz 2.26
36 MHz 3.39
V
DD
= 3.3 V
C
ext
= 22 pF
C = C
INT
+ C
EXT
+C
S
2 MHz 1.03
4 MHz 1.30
8 MHz 1.79
18 MHz 3.01
36 MHz 5.99
V
DD
= 3.3 V
C
ext
= 33 pF
C = C
INT
+ C
EXT
+ C
S
2 MHz 1.10
4 MHz 1.31
8 MHz 2.06
18 MHz 3.47
36 MHz 8.35
V
DD
= 3.3 V
C
ext
= 47 pF
C = C
INT
+ C
EXT
+ C
S
2 MHz 1.20
4 MHz 1.54
8 MHz 2.46
18 MHz 4.51
36 MHz 9.98
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