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ST STM32U5 Getting Started
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Figure 1.
STM32U535xxxxQ and STM32U545xxxxQ power supply overview (with SMPS)
DT7051
1V2
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
VBA
T
2x VDD1
1
SMPS regulator
V
oltage regulator
VLXSMPS
VDDSMPS
VSSSMPS
A/D converters
Comparators
D/A converters
Operational amplifiers
V
oltage reference buffer
T
emperature sensor
Reset block
3 x PLL
Internal RC oscillators
V
SW
AN5373
Power supplies
AN5373
-
Rev 6
page 5/47
4
6
Table of Contents
General Information
2
Power Supply Management
3
Power Supplies
3
Independent Analog Peripherals Supply
10
Independent I/O Supply Rail
11
Independent USB Transceiver Supply
11
Battery Backup Domain
11
Voltage Regulator
12
Power Supply for I/O Analog Switches
13
Power Supply Schemes
13
Figure 7. Power Supply Scheme for U535/545/575/585Xxxxq (with SMPS)
14
Figure 9. Power Supply Scheme for Stm32U5F/5G/59/5Axxx (with SMPS)
16
Power Supply Sequence between VDDA, VDDUSB, VDDIO2, and VDD
18
Power Supply Isolation
18
General Requirements
18
Particular Conditions During the Power-Down Phase
18
Reset and Power-Supply Supervisor
19
Brownout Reset (BOR)
19
System Reset
19
Figure 12. Brownout Reset Waveform
19
Backup Domain Reset
20
Figure 13. Simplified Diagram of the Reset Circuit
20
Packages
21
Package Summary
21
Conversion from UFBGA169 to TFBGA169 Boards
22
Table 1. Package Summary for STM32U5 Devices
22
Pinout Summary
23
Clocks
25
HSE Clock
25
External Crystal/Ceramic Resonator (HSE Crystal)
26
External Source (HSE Bypass)
26
HSI16 Clock
26
MSI (MSIS and MSIK) Clocks
26
LSE Clock
26
Boot Configuration
28
Boot Mode Selection
28
Embedded Bootloader and RSS
29
Table 5. Boot Modes When Trustzone ® Is Enabled (TZEN = 1)
29
Debug Management
30
SWJ-DP (Serial-Wire and JTAG Debug Port)
30
Pinout and Debug Port Pins
30
SWJ-DP Pins
30
Flexible SWJ-DP Pin Assignment
31
Internal Pull-Up and Pull-Down Resistors on JTAG Pins
31
SWJ-DP Connection with Standard JTAG Connector
32
Serial-Wire Debug (SWD) Pin Assignment
32
Internal Pull-Up and Pull-Down on SWD Pins
32
SWD Port Connection with Standard SWD Connector
33
Recommendations
34
PCB (Printed Circuit Board)
34
Component Position
34
Ground and Power Supply
34
Decoupling
34
Other Signals
35
Unused I/Os and Features
35
Figure 17. Typical Layout for VDD/VSS Pin Pair
35
Reference Design
36
Description
36
Design Reference for a STM32U5 Device (with and Without SMPS)
37
Table 9. Components of STM32U5 Device Design Reference
37
Figure 18. Stm32U535/545/575/585Xxxxq Reference Design (with SMPS)
38
Figure 19. Stm32U5Xxx Reference Design (Without SMPS)
39
Table 10. Components of STM32U599 Discovery Kit
40
Figure 20. Stm32U59/5A/5F/5Gxxxxxq Reference Design (with SMPS)
41
Revision History
42
Table 11. Document Revision History
42
Figure 1. Stm32U535Xxxxq and Stm32U545Xxxxq Power Supply Overview (with SMPS)
42
Figure 2. Stm32U535Xx and Stm32U545Xx Power Supply Overview (Without SMPS)
42
Figure 3. Stm32U575Xq and Stm32U585Xq Power Supply Overview (with SMPS)
42
Figure 4. Stm32U575Xx and Stm32U585Xx Power Supply Overview (Without SMPS)
42
Figure 5. Stm32U5F/5G/59/5Axxxxxq Power Supply Overview (with SMPS)
42
Figure 6. Stm32U5F/5G/59/5Axxx Power Supply Overview (Without SMPS)
42
Table of Contents
43
List of Tables
45
List of Figures
46
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User Manual
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ST STM32U5 Specifications
General
Brand
ST
Model
STM32U5
Category
Computer Hardware
Language
English
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