Renesas rl78 User Manual

 

RL78/G1A 

 

CHAPTER  26   ON-CHIP  DEBUG  FUNCTION 

 

The RL78 microcontroller has an on-chip debug operation control bit in the flash memory at 000C3H (see CHAPTER 

24  OPTION BYTE) and an on-chip debug security ID setting area at 000C4H to 000CDH, to prevent third parties from 

reading memory content. 

When the boot swap function is used, also set a value that is the same as that of 010C3H and 010C4H to 010CDH in 

advance, because 000C3H, 000C4H to 000CDH and 010C3H, and 010C4H to 010CDH are switched. 

 

Address 

On-Chip Debug Security ID 

000C4H to 000CDH 

Any ID code of 10 bytes 

010C4H to 010CDH 

 

 

To perform communication between the RL78 microcontroller and E1 on-chip debugging emulator, as well as each 

debug function, the securing of memory space must be done beforehand. 

If Renesas Electronics assembler or compiler is used, the items can be set by using link options. 

 

The shaded portions in Figure 26-2 are the areas reserved for placing the debug monitor program, so user 

programs or data cannot be allocated in these spaces.  When using the on-chip debug function, these spaces must 

be secured so as not to be used by the user program.  Moreover, this area must not be rewritten by the user 

program. 

 

R01UH0305EJ0200  Rev.2.00 

 

 

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Jul 04, 2013