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STM32F205RB Folha de dados(PDF) 99 Page - STMicroelectronics

Nome de Peças STM32F205RB
Descrição Electrónicos  ARM-based 32-bit MCU, 150DMIPs, up to 1 MB Flash/1284KB RAM, USB OTG HS/FS, Ethernet, 17 TIMs, 3 ADCs, 15 comm. interfaces & camera
PDF  177 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32F205RB Folha de dados(HTML) 99 Page - STMicroelectronics

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STM32F20xxx
Electrical characteristics
Doc ID 15818 Rev 9
99/177
Figure 36.
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
-
-
200(4)
CL = 10 pF, VDD > 1.8 V
-
-
TBD
tf(IO)out
Output high to low level fall
time
CL = 20 pF, 2.4 < VDD < 2.7 V
-
-
TBD
ns
CL = 10 pF, VDD > 2.7 V
-
-
TBD
tr(IO)out
Output low to high level rise
time
CL = 20 pF, 2.4 < VDD < 2.7 V
-
-
TBD
CL = 10 pF, VDD > 2.7 V
-
-
TBD
-tEXTIpw
Pulse width of external signals
detected by the EXTI
controller
10
-
-
ns
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.
TBD stands for “to be defined”.
3.
The maximum frequency is defined in Figure 36.
4.
For maximum frequencies above 50 MHz, the compensation cell should be used.
Table 46.
I/O AC characteristics(1)(2) (continued)
OSPEEDRy
[1:0] bit
value(1)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
ai14131
10%
90%
50%
tr(IO)out
OUTPUT
EXT ERNAL
ON 50pF
Maximum fr equency is achieved if (tr + tf) 2/3)T and if the duty cycle is (45-55%)
10%
50%
90%
when loaded by 50pF
T
tr(IO)out



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