Renesas RL78 Series User Manual page 804

RL78/G1D
Table 26-12. Relationship Between Enabling Security Function and Command
(1) During serial programming
Valid Security
Prohibition of block erase
Prohibition of writing
Prohibition of rewriting boot cluster 0
Note Confirm that no data has been written to the write area. Because data cannot be erased after block erase is
prohibited, do not write data if the data has not been erased.
(2) During self-programming
Valid Security
Prohibition of block erase
Prohibition of writing
Prohibition of rewriting boot cluster 0
Remark To prohibit writing and erasing during self-programming, use the flash shield window function (see 26.6.3 for
detail).
(1) During serial programming
Security
Prohibition of block erase
Prohibition of writing
Prohibition of rewriting boot cluster 0
Caution Releasing the setting of prohibition of writing is enabled only when the security is not set as the
block erase prohibition and the boot cluster 0 rewrite prohibition with code flash memory area and
data flash memory area being blanks.
(2) During self-programming
Security
Prohibition of block erase
Prohibition of writing
Prohibition of rewriting boot cluster 0
R01UH0515EJ0120 Rev.1.20
Dec 16, 2016
Blocks cannot be erased.
Blocks can be erased.
Boot cluster 0 cannot be erased.
Block Erase
Blocks can be erased.
Boot cluster 0 cannot be erased.
Table 26-13. Setting Security in Each Programming Mode
Security Setting
Set via GUI of dedicated flash memory
programmer, etc.
Security Setting
Set by using flash self-programming
library.
Executed Command
Block Erase
Can be performed.
Cannot be performed.
Boot cluster 0 cannot be written.
Executed Command
Can be performed.
Boot cluster 0 cannot be written.
Cannot be disabled after set.
Set via GUI of dedicated flash memory
programmer, etc.
Cannot be disabled after set.
Cannot be disabled after set.
Cannot be disabled during self-
programming (set via GUI of dedicated
flash memory programmer, etc. during
serial programming).
Cannot be disabled after set.
CHAPTER 26 FLASH MEMORY
Write
Note
Write
How to Disable Security Setting
How to Disable Security Setting
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