ST STM32U5

Figure 2. STM32U535xx and STM32U545xx power supply overview (without SMPS)
DT70512V2
USB transceiver
Core
SRAM1
SRAM2
SRAM4
Digital
peripherals
V
DDA
domain
Standby circuitry
(Wake-up logic, IWDG)
Low-voltage detector
LDO regulator
I/O ring
V
CORE
domain
Flash memory
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
A/D converters
Comparators
D/A converters
Operational amplifiers
Voltage reference buffer
Temperature sensor
Reset block
3 x PLL
Internal RC oscillators
LSE crystal 32 kHz oscillator
LSI 32 kHz oscillator
Backup registers
RCC_BDCR and PWR_BDCR1 registers
RTC
TAMP
BKPSRAM
Backup domain
V
SW
AN5373
Power supplies
AN5373 - Rev 6
page 6/47