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PM0223 bảng dữ liệu(PDF) 102 Page - STMicroelectronics

tên linh kiện PM0223
Giải thích chi tiết về linh kiện  This programming manual provides information for application and system-level software developers
PDF  110 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
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PM0223 bảng dữ liệu(HTML) 102 Page - STMicroelectronics

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STM32L0 Core Peripherals
PM0223
102/110
DocID025763 Rev 1
Normally, you write the required region number to this register before accessing the
MPU_RBAR or MPU_RASR. However you can change the region number by writing to the
MPU_RBAR with the VALID bit set to 1, see MPU Region Base Address Register on
page 102. This write updates the value of the REGION field.
4.5.4
MPU Region Base Address Register
The MPU_RBAR defines the base address of the MPU region selected by the MPU_RNR,
and writes to this register can update the value of the MPU_RNR. See the register summary
in Table 35 on page 99 for its attributes.
Write MPU_RBAR with the VALID bit set to 1 to change the current region number and
update the MPU_RNR. The bit assignments are:
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
Reserved
15
14
13
12
11
10
9
8
76
5432
1
0
Reserved
REGION
Bits31:8
Reserved, must be kept cleared.
Bits 7:0
REGION Indicates the MPU region referenced by the MPU_RBAR and MPU_RASR registers.
The MPU supports 8 memory regions, so the permitted values of this field are 0-7.
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
ADDR[31:N]...
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
....ADDR[31:N]
VALID
REGION[3:0]
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
Bits 31:N
ADDR[31:N]: Region base address field
The value of N depends on the region size.
For more information, see The ADDR field



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