Atmel SAM4S-EK2 Atmel ATSAM4S-EK2 ATSAM4S-EK2 Data Sheet
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Product codes
ATSAM4S-EK2
221
SAM4S [DATASHEET]
11100E–ATARM–24-Jul-13
12.11.2.1MPU Type Register
Name:
MPU_TYPE
Access: Read-write
Reset: 0x00000800
The MPU_TYPE register indicates whether the MPU is present, and if so, how many regions it supports.
• IREGION: Instruction Region
Indicates the number of supported MPU instruction regions.
Always contains 0x00. The MPU memory map is unified and is described by the DREGION field.
• DREGION: Data Region
Indicates the number of supported MPU data regions:
0x08 = Eight MPU regions.
• SEPARATE: Separate Instruction
Indicates support for unified or separate instruction and date memory maps:
0: Unified.
31
30
29
28
27
26
25
24
–
23
22
21
20
19
18
17
16
IREGION
15
14
13
12
11
10
9
8
DREGION
7
6
5
4
3
2
1
0
–
SEPARATE