Datasheet

V850ES/JG3 CHAPTER 27 FLASH MEMORY
R01UH0015EJ0300 Rev.3.00 Page 726 of 870
Sep 30, 2010
Table 27-4. Security Setting
Erase, Write, Read Operations When Each Security Is Set
(√: Executable, ×: Not Executable, −: Not Supported)
Notes on Security Setting Function
On-Board/
Off-Board Programming
Self Programming On-Board/
Off-Board
Programming
Self
Programming
Chip erase
command
prohibit
Chip erase command: ×
Block erase command: ×
Program command: √
Note 1
Read command: √
Chip erasure: −
Block erasure (FlashBlockErase): √
Write (FlashWordWrite): √
Read (FlashWordRead): √
Setting of
prohibition
cannot be
initialized.
Block erase
command
prohibit
Chip erase command: √
Block erase command: ×
Program command: √
Read command: √
Chip erasure: −
Block erasure (FlashBlockErase): √
Write (FlashWordWrite): √
Read (FlashWordRead): √
Setting of
prohibition can
be initialized by
chip erase
command.
Program
command
prohibit
Chip erase command: √
Block erase command: ×
Program command: ×
Read command: √
Chip erasure: −
Block erasure (FlashBlockErase): √
Write (FlashWordWrite): √
Read (FlashWordRead): √
Setting of
prohibition can
be initialized by
chip erase
command.
Read
command
prohibit
Chip erase command: √
Block erase command: √
Program command: √
Read command: ×
Chip erasure: −
Block erasure (FlashBlockErase): √
Write (FlashWordWrite): √
Read (FlashWordRead): √
Setting of
prohibition can
be initialized by
chip erase
command.
Supported only
when setting is
changed from
enable to
disable
Boot block
cluster
rewrite
prohibit
Chip erase command: ×
Block erase command: ×
Note 2
Program command: ×
Note 2
Read command: √
Chip erasure: −
Block erasure (FlashBlockErase): ×
Note 2
Write (FlashWordWrite): ×
Note 2
Read (FlashWordRead): √
Setting of
prohibition
cannot be
initialized.
Supported only
when setting is
changed from
enable to
disable
Note 3
Notes 1. In this case, since the erase command is invalid, data different from the data already written in the flash
memory cannot be written.
2. Executable except in boot block cluster.
3. The boot block cluster rewrite prohibit function becomes effective after the reset input.