STM32F103ZG datasheet(88/120 Pages) STMICROELECTRONICS

88 / 120 page

Electrical characteristics

STM32F103xF, STM32F103xG

88/120

Doc ID 16554 Rev 3

Input/output AC characteristics

The definition and values of input/output AC characteristics are given in Figure 44 and

Table 51, respectively.

Unless otherwise specified, the parameters given in Table 51 are derived from tests

performed under ambient temperature and VDD supply voltage conditions summarized in

Table 10.

Table 51.

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 44.

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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