STM32L433CB datasheet(165/225 Pages) STMICROELECTRONICS

Part #	STM32L433CB

Description	Ultra-low-power Arm® Cortex®-M4 32-bit MCUFPU, 100DMIPS, up to 256KB Flash, 64KB SRAM, USB FS, LCD, ext. SMPS

PDF	225 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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165 / 225 page

DS11449 Rev 5

165/225

STM32L433xx

Electrical characteristics

193

Figure 32. Typical connection diagram using the ADC

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 for the value of the pad capacitance). 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.

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.

MS33900V5

Sample and hold ADC converter

12-bit

converter

Cparasitic

(2)

Ilkg

(3)

CADC

VDDA

RAIN

(1)

VAIN

AINx

RADC

STM32L433CB Datasheet(PDF) 165 Page - STMicroelectronics