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STM32F427AI bảng dữ liệu(PDF) 162 Page - STMicroelectronics

tên linh kiện STM32F427AI
Giải thích chi tiết về linh kiện  32b Arm® Cortex®-M4 MCUFPU, 225DMIPS, up to 2MB Flash/2564KB RAM, USB OTG HS/FS, Ethernet, 17 TIMs, 3 ADCs, 20 com. interfaces, camera & LCD-TFT
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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STM32F427AI bảng dữ liệu(HTML) 162 Page - STMicroelectronics

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Electrical characteristics
STM32F427xx STM32F429xx
162/240
DS9405 Rev 12
Figure 51. Typical connection diagram when using the ADC with FT/TT pins
featuring the analog switch function
1. Refer to Table 75: ADC characteristics for the values of RAIN, RADC, and CADC.
2. Cparasitic represents the capacitance of the PCB (dependent on soldering and PCB layout quality) plus the
pad capacitance (refer to Table 57: I/O static characteristics). A high Cparasitic value downgrades
conversion accuracy. To remedy this, fADC should be reduced.
3. Refer to Table 57: I/O static characteristics for the value of IIkg.
4. Refer to Figure 22: Power supply scheme.
MSv67871V3
Sample-and-hold ADC converter
Converter
Cparasitic
(2)
Ilkg
(3)
CADC
VDDA
(4)
RAIN
(1)
VAIN
RADC
VREF+
(4)
VSSA
I/O
analog
switch
Sampling
switch with
multiplexing
VSS
VSS



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