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STM32L051R8 Datasheet(PDF) 88 Page - STMicroelectronics

Part # STM32L051R8
Description  Access line ultra-low-power 32-bit MCU Arm®-based Cortex®-M0, up to 64 KB Flash, 8 KB SRAM, 2 KB EEPROM, ADC
PDF  133 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32L051R8 Datasheet(HTML) 88 Page - STMicroelectronics

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Electrical characteristics
STM32L051x6 STM32L051x8
88/133
DS10184 Rev 10
Figure 29. Typical connection diagram using the ADC
1. Refer to Table 58: 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 (roughly 7 pF). A high Cparasitic value will downgrade conversion accuracy. To remedy
this, fADC should be reduced.
General PCB design guidelines
Power supply decoupling should be performed as shown in Figure 30 or Figure 31,
depending on whether VREF+ is connected to VDDA or not. The 10 nF capacitors should be
ceramic (good quality). They should be placed as close as possible to the chip.
Figure 30. Power supply and reference decoupling (VREF+ not connected to VDDA)



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