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STM32F405 数据表(PDF) 117 Page - STMicroelectronics

部件名 STM32F405
功能描述  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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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STM32F405 数据表(HTML) 117 Page - STMicroelectronics

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DS8626 Rev 9
117/203
STM32F405xx, STM32F407xx
Electrical characteristics
Input/output AC characteristics
The definition and values of input/output AC characteristics are given in Figure 37 and
Table 50, respectively.
Unless otherwise specified, the parameters given in Table 50 are derived from tests
performed under the ambient temperature and VDD supply voltage conditions summarized
in Table 14.
Table 50. I/O AC characteristics(1)(2)
OSPEEDRy
[1:0] bit
value(1)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
00
fmax(IO)out Maximum frequency(3)
CL = 50 pF, VDD > 2.70 V
-
-
4
MHz
CL = 50 pF, VDD > 1.8 V
-
-
2
CL = 10 pF, VDD > 2.70 V
-
-
8
CL = 10 pF, VDD > 1.8 V
-
-
4
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 = 1.8 V to
3.6 V
--
100
ns
01
fmax(IO)out Maximum frequency(3)
CL = 50 pF, VDD > 2.70 V
-
-
25
MHz
CL = 50 pF, VDD > 1.8 V
-
-
12.5
CL = 10 pF, VDD > 2.70 V
-
-
50(4)
CL = 10 pF, VDD > 1.8 V
-
-
20
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
-
-
10
ns
CL = 50 pF, VDD > 1.8 V
-
-
20
CL = 10 pF, VDD > 2.70 V
-
-
6
CL = 10 pF, VDD > 1.8 V
-
-
10
10
fmax(IO)out Maximum frequency(3)
CL = 40 pF, VDD > 2.70 V
-
-
50(4)
MHz
CL = 40 pF, VDD > 1.8 V
-
-
25
CL = 10 pF, VDD > 2.70 V
-
-
100(4)
CL = 10 pF, VDD > 1.8 V
-
-
50(4)
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
-
-
6
ns
CL = 40 pF, VDD > 1.8 V
-
-
10
CL = 10 pF, VDD > 2.70 V
-
-
4
CL = 10 pF, VDD > 1.8 V
-
-
6



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