STM32F058C8 datasheet(68/104 Pages) STMICROELECTRONICS

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Electrical characteristics

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Input/output AC characteristics

The definition and values of input/output AC characteristics are given in Figure 20 and

Table 47, respectively. Unless otherwise specified, the parameters given are derived from

tests performed under the ambient temperature and supply voltage conditions summarized

in Table 19: General operating conditions.

Figure 20. I/O AC characteristics definition

Table 47. I/O AC characteristics(1)(2)

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.

OSPEEDRy

[1:0] value(1)

Symbol

Parameter

Conditions

Min

Max

Unit

fmax(IO)out Maximum frequency(3)

3. The maximum frequency is defined in Figure 20.

CL = 50 pF

-1

MHz

tf(IO)out

Output fall time

125

tr(IO)out

Output rise time

125

fmax(IO)out Maximum frequency(3)

CL = 50 pF

-4

MHz

tf(IO)out

Output fall time

62.5

tr(IO)out

Output rise time

62.5

fmax(IO)out Maximum frequency(3)

CL = 50 pF

-10

MHz

tf(IO)out

Output fall time

tr(IO)out

Output rise time

Fm+

configuration

(4)

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.

fmax(IO)out Maximum frequency(3)

CL = 50 pF

-0.5

MHz

tf(IO)out

Output fall time

tr(IO)out

Output rise time

tEXTIpw

Pulse width of external

signals detected by the

EXTI controller

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