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STM32F412xE/G Electrical characteristics
161
01
f
max(IO)out
Maximum frequency
(3)
C
L
= 50 pF, V
DD
≥ 2.70 V - - 25
MHz
C
L
= 50 pF, V
DD
≥ 1.7 V - - 12.5
C
L
= 10 pF, V
DD
≥ 2.70 V - - 50
C
L
= 10 pF, V
DD
≥ 1.7 V - - 20
t
f(IO)out
/
t
r(IO)out
Output high to low level fall
time and output low to high
level rise time
C
L
= 50 pF, V
DD
≥2.7 V - - 10
ns
C
L
= 50 pF, V
DD
≥ 1.7 V - - 20
C
L
= 10 pF, V
DD
≥ 2.70 V - - 6
C
L
= 10 pF, V
DD
≥ 1.7 V - - 10
10
f
max(IO)out
Maximum frequency
(3)
C
L
= 40 pF, V
DD
≥ 2.70 V - - 50
(4)
MHz
C
L
= 40 pF, V
DD
≥ 1.7 V - - 25
C
L
= 10 pF, V
DD
≥ 2.70 V - - 100
(4)
C
L
= 10 pF, V
DD
≥
1.7 V - - 50
(4)
t
f(IO)out
/
t
r(IO)out
Output high to low level fall
time and output low to high
level rise time
C
L
= 40 pF, V
DD
≥ 2.70 V - - 6
ns
C
L
= 40 pF, V
DD
≥ 1.7 V - - 10
C
L
= 10 pF, V
DD
≥ 2.70 V - - 4
C
L
= 10 pF, V
DD
≥ 1.7 V - - 6
11
F
max(IO)out
Maximum frequency
(3)
C
L
= 30 pF, V
DD
≥ 2.70 V - - 100
(4)
MHz
C
L
= 30 pF, V
DD
≥ 1.7 V - - 50
(4)
t
f(IO)out
/
t
r(IO)out
Output high to low level fall
time and output low to high
level rise time
C
L
= 30 pF, V
DD
≥ 2.70 V - - 4
ns
C
L
= 30 pF, V
DD
≥ 1.7 V - - 6
C
L
= 10 pF, V
DD
≥ 2.70 V - - 2.5
C
L
= 10 pF, V
DD
≥ 1.7 V - - 4
-t
EXTIpw
Pulse width of external signals
detected by the EXTI
controller
-10--ns
1. Guaranteed by characterization, not tested in production.
2. The I/O speed is configured using the OSPEEDRy[1:0] bits. Refer to the STM32F4xx reference manual for a description of
the GPIOx_SPEEDR GPIO port output speed register.
3. The maximum frequency is defined in Figure 36.
4. For maximum frequencies above 50 MHz and
V
DD
> 2.4 V, the compensation cell should be used.
Table 58. I/O AC characteristics
(1)(2)
(continued)
OSPEEDRy
[1:0] bit
value
(1)
Symbol Parameter Conditions Min Typ Max Unit
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