STM32F103RCT7 datasheet(90/130 Pages) STMICROELECTRONICS

90 / 130 page

Electrical characteristics

STM32F103xC, STM32F103xD, STM32F103xE

90/130

Doc ID 14611 Rev 8

Input/output AC characteristics

The definition and values of input/output AC characteristics are given in Figure 46 and

Table 48, respectively.

Unless otherwise specified, the parameters given in Table 48 are derived from tests

performed under ambient temperature and VDD supply voltage conditions summarized in

Table 10.

Table 48.

I/O AC characteristics(1)

The I/O speed is configured using the MODEx[1:0] bits. Refer to the STM32F10xxx reference manual for a

description of GPIO Port configuration register.

MODEx[1:0]

bit value(1)

Symbol

Parameter

Conditions

Min

Max

Unit

fmax(IO)out Maximum frequency

(2)

The maximum frequency is defined in Figure 46.

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

MHz

tf(IO)out

Output high to low

level fall time

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

125(3)

Guaranteed by design, not tested in production.

tr(IO)out

Output low to high

level rise time

125(3)

fmax(IO)out Maximum frequency

(2) C

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

MHz

tf(IO)out

Output high to low

level fall time

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

25(3)

tr(IO)out

Output low to high

level rise time

25(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

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

5(3)

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

8(3)

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

12(3)

tr(IO)out

Output low to high

level rise time

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

5(3)

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

8(3)

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

12(3)

-tEXTIpw

Pulse width of

external signals

detected by the EXTI

controller

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