ST STM32U5

Figure 1. STM32U535xxxxQ and STM32U545xxxxQ power supply overview (with SMPS)
DT70511V2
USB transceiver
Core
SRAM1
SRAM2
SRAM4
Digital
peripherals
LSE crystal 32 kHz oscillator
LSI 32 kHz oscillator
Backup registers
RCC_BDCR and PWR_BDCR1 registers
RTC
TAMP
BKPSRAM
V
DDA
domain
Backup domain
Standby circuitry
(Wake-up logic, IWDG)
LDO regulator
Low-voltage detector
I/O ring
V
CORE
domain
Flash memory
VDDUSB
VDDIO2
V
DDIO1
I/O ring
PG[15:2]
V
DDIO2
VDDA
VSSA
VSS
VSS
V
DDIO2
domain
V
DD
domain
V
CORE
VSS
VDD
VBAT
2x VDD11
SMPS regulator
Voltage regulator
VLXSMPS
VDDSMPS
VSSSMPS
A/D converters
Comparators
D/A converters
Operational amplifiers
Voltage reference buffer
Temperature sensor
Reset block
3 x PLL
Internal RC oscillators
V
SW
AN5373
Power supplies
AN5373 - Rev 6
page 5/47