RL78/F13, F14 CHAPTER 27 SAFETY FUNCTIONS
R01UH0368EJ0210 Rev.2.10 1604
Dec 10, 2015
<Control register>
ï‚· Invalid memory access detection control register (IAWCTL)
This register is used to control the detection of invalid memory access and RAM/SFR guard function.
IAWEN bit is used in invalid memory access detection function.
The IAWCTL register can be set by an 8-bit memory manipulation instruction.
Reset signal generation clears this register to 00H.
Figure 27-22. Format of Invalid Memory Access Detection Control Register (IAWCTL)
Address: F0078H After reset: 00H R/W
Symbol 7 6 5 4 3 2 1 0
IAWCTL IAWEN 0 GRAM1 GRAM0 0 GPORT GINT GCSC
IAWEN
Note
Control of invalid memory access detection
0 Disable the detection of invalid memory access.
1 Enable the detection of invalid memory access.
Remark By specifying WDTON = 1 for the option byte, the invalid memory access function is always enabled
regardless of the setting for the IAWEN bit. (For details, see CHAPTER 29 OPTION BYTE.)
Note Only writing 1 to the IAWEN bit is valid, and writing 0 after setting the IAWEN bit to 1 is invalid.
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