STM32F103C8 datasheet(46/67 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32F103xx

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Input/output AC characteristics

The definition and values of input/output AC characteristics are given in Figure 16 and

Table 31, respectively.

Unless otherwise specified, the parameters given in Table 31 are derived from tests

performed under ambient temperature and VDD supply voltage conditions summarized in

Table 7.

Table 31.

I/O AC characteristics(1)

Refer to the Reference user manual UM0306 for a description of GPIO Port configuration register.

I/O

mode(1)

Symbol

Parameter

Conditions

Min Max Unit

fmax(IO)out Maximum frequency

(2)

The maximum frequency is defined in Figure 16.

CL = 50 pF, VDD = 2 V to 3.6 V

MHz

tf(IO)out

Output high to low level fall

time(3)

Values based on design simulation and validated on silicon, not tested in production.

CL = 50 pF, VDD = 2 V to 3.6 V

125

tr(IO)out

Output low to high level

rise time(3)

125

fmax(IO)out Maximum frequency

(2)

CL = 50 pF, VDD = 2 V to 3.6 V

MHz

tf(IO)out

Output high to low level fall

time(3)

CL = 50 pF, VDD = 2 V to 3.6 V

tr(IO)out

Output low to high level

rise time(3)

Fmax(IO)out Maximum frequency

(2)

CL = 30 pF, VDD = 2.7 V to 3.6 V

MHz

CL = 50 pF, VDD = 2.7 V to 3.6 V

MHz

CL = 50 pF, VDD = 2 V to 2.7 V

MHz

tf(IO)out

Output high to low level fall

time(3)

CL = 30 pF, VDD = 2.7 V to 3.6 V

CL = 50 pF, VDD = 2.7 V to 3.6 V

CL = 50 pF, VDD = 2 V to 2.7 V

tr(IO)out

Output low to high level

rise time(3)

CL = 30 pF, VDD = 2.7 V to 3.6 V

CL = 50 pF, VDD = 2.7 V to 3.6 V

CL = 50 pF, VDD = 2 V to 2.7 V

-tEXTIpw

Pulse width of external

signals detected by the

EXTI controller

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