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STM32L433CBU3P Folha de dados(PDF) 166 Page - STMicroelectronics

Nome de Peças STM32L433CBU3P
Descrição Electrónicos  Ultra-low-power Arm® Cortex®-M4 32-bit MCUFPU, 100DMIPS, up to 256KB flash, 64KB SRAM, USB FS, LCD, ext. SMPS
PDF  227 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32L433CBU3P Folha de dados(HTML) 166 Page - STMicroelectronics

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Electrical characteristics
STM32L433xx
166/19
DS11449 Rev 7
Figure 32. Typical connection diagram when using the ADC with FT/TT pins
featuring analog switch function
1. Refer to Table 76: ADC characteristics for the values of RAIN and CADC.
2. Cparasitic represents the capacitance of the PCB (dependent on soldering and PCB layout quality) plus the
pad capacitance (refer to Table 70: I/O static characteristics). A high Cparasitic value will downgrade
conversion accuracy. To remedy this, fADC should be reduced.
3. Refer to Table 70: I/O static characteristics for the values of Ilkg.
4. Refer to Figure 18: Power supply scheme.
General PCB design guidelines
Power supply decoupling should be performed as shown in Figure 18: Power supply
scheme. The 10 nF capacitor should be ceramic (good quality) and it should be placed as
close as possible to the chip.
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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