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STM32U375CE Datasheet(PDF) 19 Page - STMicroelectronics

Part # STM32U375CE
Description  Ultra-low-power Arm® Cortex®-M33 32-bit MCUTrustZone®FPU, 144 DMIPS, 1 MB flash memory, 256 KB SRAM, SMPS
PDF  222 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32U375CE Datasheet(HTML) 19 Page - STMicroelectronics

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Figure 3. STM32U375xxxxQ power supply overview (with SMPS)
USB transceiver
Core
SRAM1
SRAM2
Digital
peripherals
LSE crystal 32 kHz oscillator
Backup registers
RCC_BDCR registers
RTC
TAMP
VDDA domain
Backup domain
Standby circuitry
(Wake-up logic, IWDG)
LDO regulator
Low-voltage detector
I/O ring
VCORE domain
Flash memory
VDDUSB
VDDIO2
VDDIO1
I/O ring
PG[15:2]
VDDIO2
VDDA
VSSA
VSS
VSS
VDDIO2 domain
VDD domain
VCORE
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
Internal RC oscillators
VSW
In this document, VDDIOx (with x = 1 or 2) refers to the I/O power supply. VDDIO1 is supplied by VDD. VDDIO2 is the
independent power supply for PG[15:2].
VSW = VDD when VDD is above VBOR0, and VSW = VBAT when VDD is below VBOR0.
During power-up and power-down phases, the following power sequence requirements must be respected:
•
When VDD is below 1 V, other power supplies (VDDA, VDDIO2, VDDUSB) must remain below VDD + 300 mV.
•
When VDD is above 1 V, all power supplies are independent.
•
During the power-down phase, VDD can temporarily become lower than other supplies only if the energy
provided to the MCU remains below 1 mJ. This allows external decoupling capacitors to be discharged with
different time constants during the powerdown transient phase.
STM32U375xx
Functional overview
DS14861 - Rev 2
page 19/222



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