STM32H562II datasheet(25/270 Pages) STMICROELECTRONICS

25 / 270 page

DS14258 Rev 5

25/270

STM32H562xx and STM32H563xx

Functional overview

When TrustZone is enabled the boot space must be in secure area. SECBOOTADD0[24:0]

option bytes are used to select the boot secure memory address. A unique boot entry option

can be selected by setting the SECBOOT_LOCK option bit.

3.8

Global TrustZone controller (GTZC)

GTZC is used to configure TrustZone and privileged attributes within the full system.

The GTZC includes three different sub-blocks:

•

TZSC: TrustZone security controller

This sub-block defines the secure/privilege state of slave/master peripherals. It also

controls the nonsecure area size for the watermark memory peripheral controller

(MPCWM). The TZSC block informs some peripherals (such as RCC or GPIOs) about

the secure status of each securable peripheral, by sharing with RCC and I/O logic.

•

TZIC: TrustZone illegal access controller

This sub-block gathers all security illegal access events in the system and generates a

secure interrupt towards NVIC.

•

MPCBB: MPCBB: block-based memory protection controller

This sub-block controls secure states of all memory blocks (512-byte pages) of the

associated SRAM. This peripheral aims at configuring the internal RAM in a TrustZone

system product having segmented SRAM with programmable-security and privileged

attributes.

Provisioned, Closed,

Locked

NSBOOTADD[31:8]

Boot address defined

by user option byte

NSBOOTADD[31:8]

Flash: 0x0800 0000

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

PRODUCT_STATE

BOOT0 pin

Boot address

option byte selection

Boot area

ST programmed

default value

Table 4. STM32H562/H563 boot mode when TrustZone is enabled (TZEN = 0xB4)

PRODUCT_STATE

BOOT0 pin

Boot address option-

byte selection

Boot area

ST programmed

default value

Open

SECBOOTADD[31:8]

Boot address defined by

user option byte

SECBOOTADD[31:8]

Flash: 0x0C00 0000

Bootloader

Provisioning

RSS

Provisioned,

TZ_Closed,

Closed, Locked

SECBOOTADD[31:8]

Boot address defined by

user option byte

SECBOOTADD[31:8]

Flash: 0x0C00 0000

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