Atmel ARM-Based Evaluation Kit for SAM4S16C, 32-Bit ARM® Cortex® Microcontroller ATSAM4S-WPIR-RD ATSAM4S-WPIR-RD 数据表
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产品代码
ATSAM4S-WPIR-RD
249
SAM4S Series [DATASHEET]
Atmel-11100G-ATARM-SAM4S-Datasheet_27-May-14
12.11.2.3MPU Region Number Register
Name:
MPU_RNR
Access:
Read
/Write
Reset:
0x00
000800
The MPU_RNR selects which memory region is referenced by the MPU_RBAR and MPU_RASRs.
• REGION: MPU Region Referenced by the MPU_RBAR and MPU_RASRs
Indicates the MPU region referenced by the MPU_RBAR and MPU_RASRs.
The MPU supports 8 memory regions, so the permitted values of this field are 0–7.
Normally, the required region number is written to this register before accessing the MPU_RBAR or MPU_RASR. How-
The MPU supports 8 memory regions, so the permitted values of this field are 0–7.
Normally, the required region number is written to this register before accessing the MPU_RBAR or MPU_RASR. How-
. This write updates the value of the REGION field.
31
30
29
28
27
26
25
24
–
23
22
21
20
19
18
17
16
–
15
14
13
12
11
10
9
8
–
7
6
5
4
3
2
1
0
REGION