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STM32U535NET3QTR 数据表(PDF) 29 Page - STMicroelectronics

部件名 STM32U535NET3QTR
功能描述  Ultra-low-power Arm® Cortex®-M33 MCUTrustZone®FPU,240 DMIPS, up to 512 KB flash memory, 274 KB SRAM
PDF  278 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STM32U535NET3QTR 数据表(HTML) 29 Page - STMicroelectronics

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DS14217 Rev 1
29/278
STM32U535xx
Functional overview
84
The RSS are available on all devices, after enabling the TrustZone through the TZEN option
bit. Refer to the application note Overview secure firmware install (SFI) (AN4992)
for more details.
Refer to Table 6 and Table 7 for boot modes when TrustZone is disabled and
enabled respectively.
When TrustZone is enabled by setting the TZEN option bit, the boot space must be in the
secure area. The 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 BOOT_LOCK option bit, allowing
to boot always at the address selected by SECBOOTADD0[24:0] option bytes. All other boot
options are ignored.
Table 6. Boot modes when TrustZone is disabled (TZEN = 0)
NBOOT0
FLASH_
OPTR[27]
BOOT0
pin PH3
NSWBOOT0
FLASH_
OPTR[26]
Boot address
option-byte
selection
Boot area
ST programmed
default value
-
0
1
NSBOOTADD0[24:0]
Boot address defined by
user option bytes
NSBOOTADD0[24:0]
Flash: 0x0800 0000
-
1
1
NSBOOTADD1[24:0]
Boot address defined by
user option bytes
NSBOOTADD1[24:0]
Bootloader:
0x0BF9 0000
1
-
0
NSBOOTADD0[24:0]
Boot address defined by
user option bytes
NSBOOTADD0[24:0]
Flash: 0x0800 0000
0
-
0
NSBOOTADD1[24:0]
Boot address defined by
user option bytes
NSBOOTADD1[24:0]
Bootloader:
0x0BF9 0000



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