Fujitsu FR81S 사용자 설명서
CHAPTER 3: CPU
10. Memory Protection Function (MPU)
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : CPU
FUJITSU SEMICONDUCTOR CONFIDENTIAL
36
[bit5, bit4] SZ[1:0]
The access size when the violation occurred.
SZ[1:0]
Access size
00
Byte
01
Half word
10
Word
11
Reserved
[bit3] MD
Indicates the mode of the access.
MD
Operation mode
0
Access in user mode
1
Access in privilege mode
[bit0] DPV (Data Access Protection Violation)
This bit indicates that a data access protection violation occurred. In order to save the details of new
protection violations, clear this bit.
Writing "0" to this bit only is valid. Writing "1" to the bit is ignored.
DPV
Data access protection violation
0
Data access protection violation not detected (initial value)
1
Data access protection violation detected
MB91520 Series
MN705-00010-1v0-E
133