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STM32F405 Datasheet(PDF) 118 Page - STMicroelectronics

No. de pieza STM32F405
Descripción Electrónicos  Arm® Cortex®-M4 32b MCUFPU, 210DMIPS, up to 1MB Flash/1924KB RAM, USB OTG HS/FS, Ethernet, 17 TIMs, 3 ADCs, 15 comm. interfaces & camera
PDF  204 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32F405 Datasheet(HTML) 118 Page - STMicroelectronics

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Electrical characteristics
STM32F405xx, STM32F407xx
118/203
DS8626 Rev 9
Figure 37. I/O AC characteristics definition
11
Fmax(IO)out Maximum frequency(3)
CL = 30 pF, VDD > 2.70 V
-
-
100(4)
MHz
CL = 30 pF, VDD > 1.8 V
-
-
50(4)
CL = 10 pF, VDD > 2.70 V
-
-
180(4)
CL = 10 pF, VDD > 1.8 V
-
-
100(4)
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
-
-
4
ns
CL = 30 pF, VDD > 1.8 V
-
-
6
CL = 10 pF, VDD > 2.70 V
-
-
2.5
CL = 10 pF, VDD > 1.8 V
-
-
4
-tEXTIpw
Pulse width of external signals
detected by the EXTI
controller
10
-
-
ns
1. Guaranteed by characterization.
2. The I/O speed is configured using the OSPEEDRy[1:0] bits. Refer to the STM32F4xx reference manual for a description of
the GPIOx_SPEEDR GPIO port output speed register.
3. The maximum frequency is defined in Figure 37.
4. For maximum frequencies above 50 MHz, the compensation cell should be used.
Table 50. I/O AC characteristics(1)(2) (continued)
OSPEEDRy
[1:0] bit
value(1)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
ai14131d
10%
90%
50%
tr(IO)out
OUTPUT
EXTERNAL
ON CL
Maximum frequency is achieved if (tr + tf) ≤ (2/3)T and if the duty cycle is (45-55%)
when loaded by CL specified in the table “
I/O AC characteristics”.
10%
50%
90%
T
tf(IO)out



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