Renesas RX Series

R01UH0823EJ0100 Rev.1.00 Page 326 of 1823
Jul 31, 2019
RX23W Group 17. Memory-Protection Unit (MPU)
17.2.6 Memory-Protection Error Status Register (MPESTS)
IMPER Bit (Instruction Memory-Protection Error Generation
)
This bit indicates the state of memory-protection error generation by instruction execution.
Setting the error status-clearing bit (CLR) in the memory-protection error status-clearing register (MPECLR) to 1 clears
this bit to 0.
DMPER Bit
(
Data Memory-Protection Error Generation
)
This bit indicates the state of memory-protection error generation by operand access.
Setting the error status-clearing bit (CLR) in the memory-protection error status-clearing register (MPECLR) to 1 clears
this bit to 0.
DRW Bit
(
Data Read/Write
)
For a memory-protection error produced by operand access, this bit indicates the read/write attribute of the access
operation. This bit is only valid when the DMPER bit is 1.
Setting the error status-clearing bit (CLR) in the memory-protection error status-clearing register (MPECLR) to 1 clears
this bit to 0.
Address(es): 0008 650Ch
b31 b30 b29 b28 b27 b26 b25 b24 b23 b22 b21 b20 b19 b18 b17 b16
————————————————
Value after reset:
0000000000000000
b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
—————————————DRWDMPERIMPER
Value after reset:
0000000000000000
Bit Symbol Bit Name Function R/W
b0 IMPER Instruction Memory-Protection
Error Generation
0: No instruction memory-protection error was generated.
1: Instruction memory-protection error was generated.
R
b1 DMPER Data Memory-Protection Error
Generation
0: No data memory-protection error was generated.
1: Data memory-protection error was generated.
R
b2 DRW Data Read/Write 0: Data were read.
1: Data were written.
R
b31 to b3 — Reserved The read value is 0. The write value should always be 0. R/W