STM32WLE4JC datasheet(62/146 Pages) STMICROELECTRONICS

部件名	STM32WLE4JC

功能描述	Multiprotocol LPWAN 32-bit Arm® Cortex®-M4 MCUs, LoRa®, (G)FSK, (G)MSK, BPSK, up to 256KB Flash, 64KB SRAM

PDF	146 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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62 / 146 page

Electrical characteristics

STM32WLE5/E4xx

62/146

DS13105 Rev 9

5.1.6

Power supply scheme

Figure 13. Power supply scheme

Caution:

Each power supply pair (such as VDD/VSS or VDDA/VSS) must be decoupled with filtering

ceramic capacitors as shown in the above figure. These capacitors must be placed as close

as possible to (or below) the appropriate pins on the underside of the PCB to ensure the

good functionality of the device.

Note:

For the UFQFPN48 and WLCSP59 package, VREF+ is internally connected to VDDA.

MSv64325V5

VDD

Backup circuitry

(LSE, RTC and

backup registers)

Kernel logic

(CPU, digital

and memories

I/O

logic

LPR

GPIOs

1.55 to 3.6 V

n x 100 nF + 1 x 4.7 μF

n x VSS

n x VDD

VBAT

VCORE

Power switch

ADC

DAC

COMPs

VREFBUF

VREF+

VREF-

VDDA

10 nF + 1 μF

VDDA

VSS

VREF

100 nF 1 μF

SMPS

VDDSMPS

VLXSMPS

VFBSMPS

VSSSMPS

4.7 μF

VDD

Exposed pad

470 nF

To all modules (VSS/VSSRF)

LDO/SMPS

RFLDO

VDDRF1V5

REG PA

VDDPA (= VDDRF1V5 or VDDSMPS)

VDDRF

15 μH

VBAT

Sub-GHz radio

OUT

STM32WLE4JC 数据表(PDF) 62 Page - STMicroelectronics

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