STM32L063C8 datasheet(87/121 Pages) STMICROELECTRONICS

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STM32L063x8

Electrical characteristics

107

Input/output AC characteristics

The definition and values of input/output AC characteristics are given in Figure 23 and

Table 60, respectively.

Unless otherwise specified, the parameters given in Table 60 are derived from tests

performed under ambient temperature and VDD supply voltage conditions summarized in

Table 24.

Table 60. I/O AC characteristics(1)

OSPEEDRx[1:0]

bit value(1)

Symbol

Parameter

Conditions

Min

Max(2) Unit

fmax(IO)out Maximum frequency(3)

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

400

kHz

CL = 50 pF, VDD = 1.65 V to 2.7 V

100

tf(IO)out

tr(IO)out

Output rise and fall time

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

125

CL = 50 pF, VDD = 1.65 V to 2.7 V

320

fmax(IO)out Maximum frequency(3)

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

MHz

CL = 50 pF, VDD = 1.65 V to 2.7 V

0.6

tf(IO)out

tr(IO)out

Output rise and fall time

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

CL = 50 pF, VDD = 1.65 V to 2.7 V

Fmax(IO)out Maximum frequency(3)

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

MHz

CL = 50 pF, VDD = 1.65 V to 2.7 V

tf(IO)out

tr(IO)out

Output rise and fall time

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

CL = 50 pF, VDD = 1.65 V to 2.7 V

Fmax(IO)out Maximum frequency(3)

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

MHz

CL = 50 pF, VDD = 1.65 V to 2.7 V

tf(IO)out

tr(IO)out

Output rise and fall time

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

CL = 50 pF, VDD = 1.65 V to 2.7 V

Fm+

configuration(4)

fmax(IO)out Maximum frequency(3)

CL = 50 pF, VDD = 2.5 V to 3.6 V

-1

MHz

tf(IO)out

Output fall time

tr(IO)out

Output rise time

fmax(IO)out Maximum frequency(3)

CL = 50 pF, VDD = 1.65 V to 3.6 V

-350

KHz

tf(IO)out

Output fall time

tr(IO)out

Output rise time

-tEXTIpw

Pulse width of external

signals detected by the

EXTI controller

-8

1. The I/O speed is configured using the OSPEEDRx[1:0] bits. Refer to the line reference manual for a description of GPIO Port

configuration register.

2. Guaranteed by design.

3. The maximum frequency is defined in Figure 23.

4. When Fm+ configuration is set, the I/O speed control is bypassed. Refer to the line reference manual for a detailed

description of Fm+ I/O configuration.

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