NEC mPD78F0730 Preliminary User's Manual page 466

(1) During on-board/off-board programming
Prohibition of batch erase (chip erase)
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 batch erase
(chip erase) is prohibited, do not write data if the data has not been erased.
(2) During self programming
Valid Security
Prohibition of batch erase (chip erase)
Prohibition of block erase
Prohibition of writing
Prohibition of rewriting boot cluster 0
Table 19-9 shows how to perform security settings in each programming mode.
(1) On-board/off-board programming
Security
Prohibition of batch erase (chip erase)
Prohibition of block erase
Prohibition of writing
Prohibition of rewriting boot cluster 0
(2) Self programming
Security
Prohibition of batch erase (chip erase)
Prohibition of block erase
Prohibition of writing
Prohibition of rewriting boot cluster 0
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CHAPTER 19 FLASH MEMORY
Table 19-8. Relationship Between Enabling Security Function and Command
Valid Security
Cannot be erased in batch
Can be erased in batch.
Cannot be erased in batch
Blocks can be erased.
Boot cluster 0 cannot be erased.
Table 19-9. Setting Security in Each Programming Mode
Set via GUI of dedicated flash
programmer, etc.
Set by using information library.
Preliminary User's Manual U19014EJ1V0UD
Executed Command
Batch Erase (Chip Erase)
Blocks cannot be
erased.
Boot cluster 0 cannot be
erased.
Executed Command
Block Erase
Security Setting
Security Setting
Block Erase Write
Can be performed
Can be performed.
Cannot be performed.
Boot cluster 0 cannot be
written.
Write
Can be performed.
Boot cluster 0 cannot be written.
How to Disable Security Setting
Cannot be disabled after set.
Execute batch erase (chip erase)
command
Cannot be disabled after set.
How to Disable Security Setting
Cannot be disabled after set.
Execute batch erase (chip erase)
command during on-board/off-board
programming (cannot be disabled during
self programming)
Cannot be disabled after set.
Note
.