STM32L062C8F3DTR datasheet(86/124 Pages) STMICROELECTRONICS

Part #	STM32L062C8F3DTR

Description	Ultra-low-power 32-bit MCU Arm®-based Cortex®-M0, 64 KB Flash,8 KB SRAM, 2 KB EEPROM, USB, ADC, DAC, AES

PDF	124 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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86 / 124 page

Electrical characteristics

STM32L062x8

86/124

DS10183 Rev 11

Figure 24. Typical connection diagram using the ADC

1. Refer to Table 55: 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 25 or Figure 26,

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 25. Power supply and reference decoupling (VREF+ not connected to VDDA)

MSv34712V1

VDDA

AINx

IL±50nA

RAIN(1)

Cparasitic

VAIN

RADC

12-bit

converter

CADC

Sample and hold ADC

converter

MS41913V1

VREF+

STM32Lxx

VDDA

VSSA

1 μF // 100 nF

STM32L062C8F3DTR Datasheet(PDF) 86 Page - STMicroelectronics