Contents

1

General information ...............................................................2

2

STM32CubeU5 main features ......................................................3

3

STM32CubeU5 architecture overview ..............................................5

3.1

Level 0 ....................................................................... 5

3.1.1

Board support package (BSP)............................................... 5

3.1.2

Hardware abstraction layer (HAL) and low-layer (LL) ............................. 6

3.1.3

Basic peripheral usage examples ............................................ 6

3.2

Level 1 ....................................................................... 6

3.2.1

Middleware components ................................................... 6

3.2.2

Examples based on the middleware components ................................ 8

3.3

Level 2 ....................................................................... 8

3.4

Utilities ....................................................................... 8

3.4.1

LPBAM utility............................................................ 8

4

STM32CubeU5 MCU package overview ...........................................9

4.1

Supported STM32U5 series devices and hardware .................................. 9

4.2

MCU package overview ........................................................ 10

4.2.1

TrustZone-enabled projects ............................................... 12

5

Getting started with STM32CubeU5 ...............................................16

5.1

Running a first example ........................................................ 16

5.1.1

Running a first TrustZone-enabled example ................................... 16

5.1.2

Running a first TrustZone-disabled example ................................... 17

5.2

Developing a custom application................................................. 18

5.2.1

Using STM32CubeMX to develop or update an application........................ 18

5.2.2

HAL application......................................................... 18

5.2.3

LL application .......................................................... 21

5.3

Getting STM32CubeU5 release updates .......................................... 21

6

FAQ ..............................................................................22

6.1

What is the license scheme for the STM32CubeU5 MCU package? ................... 22

6.2

What boards are supported by the STM32CubeU5 MCU package? ................... 22

6.3

Are any examples provided with the ready-to-use toolset projects?.................... 22

6.4

How to enable TrustZone® on STM32U5 series devices? ............................ 22

6.5

How to disable TrustZone® on STM32U5 series devices? ........................... 22

6.6

How to update the secure/nonsecure memory mapping ............................. 23

6.7

How to set up interrupts for secure and nonsecure applications....................... 23

UM2883

Contents

UM2883 - Rev 4

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