STM32H562VG datasheet(24/270 Pages) STMICROELECTRONICS

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Functional overview

STM32H562xx and STM32H563xx

24/270

DS14258 Rev 5

3.7

Boot modes

At startup, a BOOT0 pin and NSBOOTADD[31:8]/SECBOOTADD[31:8] option bytes are

used to select the boot memory address that includes:

•

Boot from any address in user flash memory

•

Boot from system memory

–

Bootloader

–

ST immutable root of trust (ST-iROT)

–

Root security service (RSS)

–

Debug authentication library (RSS-DA)

Embedded bootloader

The embedded bootloader is located in the system memory, programmed by ST during

production. It is used to reprogram the flash memory by using USART, I2C, I3C, SPI,

FDCAN, or USB_FS in device mode through the DFU (device firmware upgrade).

Refer to AN2606 “STM32 microcontroller system memory boot mode”.

Embedded root security services (RSS)

The embedded RSS are located in the secure information block, programmed by ST during

production.

Refer to AN4992 “Overview secure firmware install (SFI)”.

Embedded immutable root of trust (ST-iROT)

The embedded ST-iROT in the system memory, programmed by ST during production. ST-

iROT is the immutable root of trust managing the secure boot and secure install of the first

updatable level to execute in a boot sequence.

Embedded debug authentication (ST-DA)

The embedded ST-DA in the system memory is programmed by ST during production.

ST-DA is the library that manages the debug authentication protocol, making it possible to

securely reopen the debug or to launch regressions on secured products in the field.

3.7.1

STM32H562/H563xx boot modes

Table 3 and Table 4, respectively, provide the detail of the boot mode when TrustZone is

disabled (TZEN = 0xC3) and enabled (TZEN = 0xB4).

Table 3. STM32H562/H563 boot mode when TrustZone is disabled (TZEN = 0xC3)

PRODUCT_STATE

BOOT0 pin

Boot address

option byte selection

Boot area

ST programmed

default value

Open

NSBOOTADD[31:8]

Boot address defined

by user option byte

NSBOOTADD[31:8]

Flash: 0x0800 0000

Bootloader

Provisioning

RSS

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