STM32F051X8 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
STM32F051X8
STMicroelectronics
STM32F051X8 Datasheet PDF : 122 Pages
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Electrical characteristics
STM32F051x4 STM32F051x6 STM32F051x8
Input/output AC characteristics
The definition and values of input/output AC characteristics are given in Figure 23 and
Table 50, respectively. Unless otherwise specified, the parameters given are derived from
tests performed under the ambient temperature and supply voltage conditions summarized
in Table 20: General operating conditions.
Table 50. I/O AC characteristics(1)(2)
OSPEEDRy
[1:0]
value(1)
Symbol
Parameter
Conditions
Min Max Unit
fmax(IO)out Maximum frequency(3)
-
2 MHz
x0
tf(IO)out Output fall time
CL = 50 pF
tr(IO)out Output rise time
fmax(IO)out Maximum frequency(3)
- 125
ns
- 125
-
10 MHz
01
tf(IO)out Output fall time
CL = 50 pF
tr(IO)out Output rise time
-
25
ns
-
25
CL = 30 pF, VDDIOx ≥ 2.7 V
-
fmax(IO)out Maximum frequency(3) CL = 50 pF, VDDIOx ≥ 2.7 V
-
50
30 MHz
CL = 50 pF, VDDIOx < 2.7 V
-
20
CL = 30 pF, VDDIOx ≥ 2.7 V
-
5
11
tf(IO)out Output fall time
CL = 50 pF, VDDIOx ≥ 2.7 V
-
8
CL = 50 pF, VDDIOx < 2.7 V -
CL = 30 pF, VDDIOx ≥ 2.7 V
-
12
ns
5
tr(IO)out Output rise time
CL = 50 pF, VDDIOx ≥ 2.7 V
-
8
CL = 50 pF, VDDIOx < 2.7 V -
Fm+
fmax(IO)out Maximum frequency(3)
-
configuration
(4)
tf(IO)out
Output fall time
CL = 50 pF
-
tr(IO)out Output rise time
-
12
2 MHz
12
ns
34
Pulse width of external
-
tEXTIpw signals detected by
-
the EXTI controller
10
-
ns
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 Figure 23.
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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DocID022265 Rev 7
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