Table 48. I/O Ac Characteristics - STMicroelectronics STM32F031F4 Manual

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STM32F031x4 STM32F031x6
Input/output AC characteristics
The definition and values of input/output AC characteristics are given in
Table 48, respectively.
Unless otherwise specified, the parameters given are derived from tests performed under
the ambient temperature and supply voltage conditions summarized in
operating
OSPEEDRy
[1:0]
(1)
value
x0
01
11
Fm+
configuration
(4)
1. The I/O speed is configured using the OSPEEDRx[1:0] bits. Refer to the STM32F0xxxx RM0091 reference
manual for a description of GPIO Port configuration register.
2. Guaranteed by design, not tested in production.
3. The maximum frequency is defined in
4. When Fm+ configuration is set, the I/O speed control is bypassed. Refer to the STM32F0xxxx reference
manual RM0091 for a detailed description of Fm+ I/O configuration.
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conditions.

Table 48. I/O AC characteristics

Symbol Parameter
f Maximum frequency
max(IO)out
t Output fall time
f(IO)out
t Output rise time
r(IO)out
f Maximum frequency
max(IO)out
t Output fall time
f(IO)out
t Output rise time
r(IO)out
f Maximum frequency
max(IO)out
t Output fall time
f(IO)out
t Output rise time
r(IO)out
f Maximum frequency
max(IO)out
t Output fall time
f(IO)out
t Output rise time
r(IO)out
Pulse width of external
t signals detected by
EXTIpw
the EXTI controller
DocID025743 Rev 3
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Conditions
(3)
C = 50 pF
L
(3)
C = 50 pF
L
C = 30 pF, V
L
(3)
C = 50 pF, V
L
C = 50 pF, V
L
C = 30 pF, V
L
C = 50 pF, V
L
C = 50 pF, V
L
C = 30 pF, V
L
C = 50 pF, V
L
C = 50 pF, V
L
(3)
C = 50 pF
L
Figure 22.
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Electrical characteristics
Figure 22
Table 18: General
(1)(2)
Min
-
-
-
-
-
-

2.7 V -
DDIOx

2.7 V -
DDIOx

2.7 V -
DDIOx

2.7 V -
DDIOx

2.7 V -
DDIOx

2.7 V -
DDIOx

2.7 V -
DDIOx

2.7 V -
DDIOx

2.7 V -
DDIOx
-
-
-
10
021-31660491
and
Max Unit
2 MHz
125
ns
125
10 MHz
25
ns
25
50
30 MHz
20
5
8
12
ns
5
8
12
2 MHz
12
ns
34
- ns
73/113
86