STM32F207IE datasheet(98/177 Pages) STMICROELECTRONICS

98 / 177 page

Electrical characteristics

STM32F20xxx

98/177

Doc ID 15818 Rev 9

Input/output AC characteristics

The definition and values of input/output AC characteristics are given in Figure 36 and

Table 46, respectively.

Unless otherwise specified, the parameters given in Table 46 are derived from tests

performed under the ambient temperature and VDD supply voltage conditions summarized

in Table 12.

Based on characterization data, not tested in production.

Table 46.

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 > 1.8 V

CL = 10 pF, VDD > 2.70 V

TBD

CL = 10 pF, VDD > 1.8 V

TBD

tf(IO)out

Output high to low level fall

time

CL = 50 pF, VDD = 1.8 V to

3.6 V

TBD

tr(IO)out

Output low to high level rise

time

TBD

fmax(IO)out Maximum frequency

(3)

CL = 50 pF, VDD > 2.70 V

MHz

CL = 50 pF, VDD > 1.8 V

12.5(4)

CL = 10 pF, VDD > 2.70 V

50(4)

CL = 10 pF, VDD > 1.8 V

TBD

tf(IO)out

Output high to low level fall

time

CL = 50 pF, VDD < 2.7 V

TBD

CL = 10 pF, VDD > 2.7 V

TBD

tr(IO)out

Output low to high level rise

time

CL = 50 pF, VDD < 2.7 V

TBD

CL = 10 pF, VDD > 2.7 V

TBD

fmax(IO)out Maximum frequency

(3)

CL = 40 pF, VDD > 2.70 V

50(4)

MHz

CL = 40 pF, VDD > 1.8 V

CL = 10 pF, VDD > 2.70 V

100(4)

CL = 10 pF, VDD > 1.8 V

TBD

tf(IO)out

Output high to low level fall

time

CL = 50 pF, 2.4 < VDD < 2.7 V

TBD

CL = 10 pF, VDD > 2.7 V

TBD

tr(IO)out

Output low to high level rise

time

CL = 50 pF, 2.4 < VDD < 2.7 V

TBD

CL = 10 pF, VDD > 2.7 V

TBD

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