STM32F072RB datasheet(82/128 Pages) STMICROELECTRONICS

82 / 128 page

Electrical characteristics

STM32F072x8 STM32F072xB

82/128

DS9826 Rev 6

Input/output AC characteristics

The definition and values of input/output AC characteristics are given in Figure 24 and

Table 55, respectively. Unless otherwise specified, the parameters given are derived from

tests performed under the ambient temperature and supply voltage conditions summarized

in Table 24: General operating conditions.

Table 55. I/O AC characteristics(1)(2)

OSPEEDRy

[1:0] value(1)

Symbol

Parameter

Conditions

Min

Max

Unit

fmax(IO)out Maximum frequency(3)

CL = 50 pF, VDDIOx ≥ 2 V

-2

MHz

tf(IO)out

Output fall time

125

tr(IO)out

Output rise time

125

fmax(IO)out Maximum frequency(3)

CL = 50 pF, VDDIOx < 2 V

-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, VDDIOx ≥ 2 V

-10

MHz

tf(IO)out

Output fall time

tr(IO)out

Output rise time

fmax(IO)out Maximum frequency(3)

CL = 50 pF, VDDIOx < 2 V

-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 = 30 pF, VDDIOx ≥ 2.7 V

MHz

CL = 50 pF, VDDIOx ≥ 2.7 V

CL = 50 pF, 2 V ≤ VDDIOx < 2.7 V

CL = 50 pF, VDDIOx < 2 V

tf(IO)out

Output fall time

CL = 30 pF, VDDIOx ≥ 2.7 V

CL = 50 pF, VDDIOx ≥ 2.7 V

CL = 50 pF, 2 V ≤ VDDIOx < 2.7 V

CL = 50 pF, VDDIOx < 2 V

tr(IO)out

Output rise time

CL = 30 pF, VDDIOx ≥ 2.7 V

CL = 50 pF, VDDIOx ≥ 2.7 V

CL = 50 pF, 2 V ≤ VDDIOx < 2.7 V

CL = 50 pF, VDDIOx < 2 V

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