STM32F205RFT6 datasheet(109/184 Pages) STMICROELECTRONICS

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DocID15818 Rev 15

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STM32F20xxx

Electrical characteristics

183

fmax(IO)out Maximum frequency(2)

CL = 50 pF, VDD > 2.70 V

MHz

CL = 50 pF, VDD > 1.8 V

12.5

CL = 10 pF, VDD > 2.70 V

50(3)

CL = 10 pF, VDD > 1.8 V

tf(IO)out/

tr(IO)out

Output high to low level fall

time and output low to high

level rise time

CL = 50 pF, VDD >2.7 V

CL = 50 pF, VDD > 1.8 V

CL = 10 pF, VDD > 2.70 V

CL = 10 pF, VDD > 1.8 V

fmax(IO)out Maximum frequency(2)

CL = 40 pF, VDD > 2.70 V

MHz

CL = 40 pF, VDD > 1.8 V

CL = 10 pF, VDD > 2.70 V

100(3)

CL = 10 pF, VDD > 1.8 V

50(3)

tf(IO)out/

tr(IO)out

Output high to low level fall

time and output low to high

level rise time

CL = 40 pF, VDD > 2.70 V

CL = 40 pF, VDD > 1.8 V

CL = 10 pF, VDD > 2.70 V

CL = 10 pF, VDD > 1.8 V

-3

fmax(IO)out Maximum frequency(2)

CL = 30 pF, VDD > 2.70 V

100(3)

MHz

CL = 30 pF, VDD > 1.8 V

50(3)

CL = 10 pF, VDD > 2.70 V

120(3)

CL = 10 pF, VDD > 1.8 V

100(3)

tf(IO)out/

tr(IO)out

Output high to low level fall

time and output low to high

level rise time

CL = 30 pF, VDD > 2.70 V

CL = 30 pF, VDD > 1.8 V

CL = 10 pF, VDD > 2.70 V

2.5

CL = 10 pF, VDD > 1.8 V

-tEXTIpw

Pulse width of external

signals detected by the

EXTI controller

-10

1. The I/O speed is configured using the OSPEEDRy[1:0] bits. Refer to the STM32F20/21xxx reference manual for a

description of the GPIOx_SPEEDR GPIO port output speed register.

2. The maximum frequency is defined in Figure 39.

3. For maximum frequencies above 50 MHz and VDD above 2.4 V, the compensation cell should be used.

Table 48. I/O AC characteristics(1) (continued)

OSPEEDRy

[1:0] bit

value(1)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

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