STM32U545NET6QTR datasheet(132/283 Pages) STMICROELECTRONICS

Part #	STM32U545NET6QTR

Description	Ultra-low-power Arm® Cortex®-M33 MCUTrustZone®FPU,240 DMIPS, 512 KB flash memory, 274 KB SRAM, crypto

PDF	283 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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132 / 283 page

Electrical characteristics

STM32U545xx

132/283

DS14216 Rev 1

Figure 24. STM32U545xQ power supply scheme (with SMPS)

Note:

SMPS and LDO regulators provide, in a concurrent way, the VCORE supply depending on

application requirements. However, only one of them is active at the same time. When

SMPS is active, it feeds the VCORE on the two VDD11 pins supplied by the filtered SMPS

VLXSMPS output pin. A 2.2 µH coil and a 2.2 µF capacitor on each VDD11 pin are then

required. When LDO is active, it supplies the VCORE and regulates it using the same

decoupling capacitors on VDD11 pins. It is recommended to add a decoupling capacitor of

100 nF near each VDD11 pin/ball, but it is not mandatory.

MSv64359V3

VDDIO2

VDD

Kernel logic

(CPU, digital

and memories)

I/O

logic

Backup circuitry

(LSE, RTC, TAMP,

backup registers,

backup SRAM)

OUT

GPIOs

1.65 – 3.6 V

OUT

GPIOs

n x 100 nF

+ 10 μF

m x100 nF

I/O

logic

+ 4.7 μF

m x VDDIO2

m x VSS

n x VSS

n x VDD

VBAT

VCORE

Power switch

VDDIO2

VDDIO1

ADCs/

DACs/

OPAMPs/

COMPs/

VREFBUF

VREF+

VREF-

VDDA

100 nF

+ 1 μF

VDDA

VSSA

VREF

100 nF+ 1 μF

VSSSMPS

2 x VDD11

VLXSMPS

VDDSMPS

VDD

2.2 μH

2 x 2.2 μF

10 μF

SMPS ON

SMPS OFF

LDO

SMPS

VDDUSB

100 nF

Voltage regulator

VDDUSB

STM32U545NET6QTR Datasheet(PDF) 132 Page - STMicroelectronics

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