STM32F756VG datasheet(143/228 Pages) STMICROELECTRONICS

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STM32F756xx

Electrical characteristics

196

Input/output AC characteristics

The definition and values of input/output AC characteristics are given in Figure 39 and

Table 58, respectively.

Unless otherwise specified, the parameters given in Table 58 are derived from tests

performed under the ambient temperature and VDD supply voltage conditions summarized

in Table 17.

Table 58. 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 ≥ 2.7 V

MHz

CL = 50 pF, VDD ≥ 1.7 V

CL = 10 pF, VDD ≥ 2.7 V

CL = 10 pF, VDD ≥ 1.8 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≥ 2.7 V

MHz

CL = 50 pF, VDD≥ 1.8 V

12.5

CL = 50 pF, VDD≥ 1.7 V

CL = 10 pF, VDD ≥ 2.7 V

CL = 10 pF, VDD≥ 1.8 V

CL = 10 pF, VDD≥ 1.7 V

12.5

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 = 10 pF, VDD ≥ 2.7 V

CL = 50 pF, VDD ≥ 1.7 V

CL = 10 pF, VDD ≥ 1.7 V

fmax(IO)out Maximum frequency(3)

CL = 40 pF, VDD ≥ 2.7 V

50(4)

MHz

CL = 10 pF, VDD ≥ 2.7 V

100(4)

CL = 40 pF, VDD ≥ 1.7 V

CL = 10 pF, VDD ≥ 1.8 V

CL = 10 pF, VDD ≥ 1.7 V

42.5

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 ≥2.7 V

CL = 10 pF, VDD ≥ 2.7 V

CL = 40 pF, VDD ≥ 1.7 V

CL = 10 pF, VDD ≥ 1.7 V

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