参数资料
型号: STM32F207ICH7TR
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 32-BIT, FLASH, 120 MHz, RISC MICROCONTROLLER, PBGA176
封装: 10 X 10 MM, 0.60 MM PITCH, ROHS COMPLIANT, UFBGA-176
文件页数: 157/163页
文件大小: 2275K
代理商: STM32F207ICH7TR
STM32F205xx, STM32F207xx
Electrical characteristics
Doc ID 15818 Rev 7
Figure 36.
I/O AC characteristics definition
11
Fmax(IO)out Maximum frequency
CL = 30 pF, VDD > 2.70 V
-
MHz
CL = 30 pF, VDD > 1.8 V
-
50(4)
CL = 10 pF, VDD > 2.70 V
-
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 43.
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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