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STM32U545NET6QTR Datasheet(PDF) 132 Page - STMicroelectronics

No. de pieza STM32U545NET6QTR
Descripción Electrónicos  Ultra-low-power Arm® Cortex®-M33 MCUTrustZone®FPU,240 DMIPS, 512 KB flash memory, 274 KB SRAM, crypto
PDF  283 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32U545NET6QTR Datasheet(HTML) 132 Page - STMicroelectronics

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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)
IN
OUT
GPIOs
1.65 – 3.6 V
IN
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



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