STM32F411RET6 datasheet(101/149 Pages) STMICROELECTRONICS

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STM32F411xC STM32F411xE

Electrical characteristics

123

Input/output AC characteristics

The definition and values of input/output AC characteristics are given in Figure 31 and

Table 55, respectively.

Unless otherwise specified, the parameters given in Table 55 are derived from tests

performed under the ambient temperature and VDD supply voltage conditions summarized

in Table 14.

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

OSPEEDRy

[1:0] bit

value(1)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fmax(IO)out Maximum frequency(3)

CL = 50 pF, VDD ≥ 2.70 V

MHz

CL = 50 pF, VDD≥ 1.7 V

CL = 10 pF, VDD ≥ 2.70 V

CL = 10 pF, VDD ≥ 1.7 V

tf(IO)out/

tr(IO)out

Output high to low level fall

time and output low to high

level rise time

CL = 50 pF, VDD = 1.7 V to

3.6 V

100

fmax(IO)out Maximum frequency(3)

CL = 50 pF, VDD ≥ 2.70 V

MHz

CL = 50 pF, VDD ≥ 1.7 V

12.5

CL = 10 pF, VDD ≥ 2.70 V

CL = 10 pF, VDD ≥ 1.7 V

tf(IO)out/

tr(IO)out

Output high to low level fall

time and output low to high

level rise time

CL = 50 pF, VDD ≥2.7 V

CL = 50 pF, VDD ≥ 1.7 V

CL = 10 pF, VDD ≥ 2.70 V

CL = 10 pF, VDD ≥ 1.7 V

fmax(IO)out Maximum frequency(3)

CL = 40 pF, VDD ≥ 2.70 V

50(4)

MHz

CL = 40 pF, VDD ≥ 1.7 V

CL = 10 pF, VDD ≥ 2.70 V

100(4)

CL = 10 pF, VDD ≥ 1.7 V

50(4)

tf(IO)out/

tr(IO)out

Output high to low level fall

time and output low to high

level rise time

CL = 40 pF, VDD≥ 2.70 V

CL = 40 pF, VDD≥ 1.7 V

CL = 10 pF, VDD≥ 2.70 V

CL = 10 pF, VDD≥ 1.7 V

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