![](http://datasheet.mmic.net.cn/Renesas-Electronics-America/UPD78F9234CS-CAA-A_datasheet_99865/UPD78F9234CS-CAA-A_294.png)
CHAPTER 19 FLASH MEMORY
User’s Manual U17446EJ5V0UD
292
Figure 19-17. Format of Protect Byte (2/2)
μPD78F9234
PRSELF4
PRSELF3
PRSELF2
PRSELF1
PRSELF0
Status
0
Blocks 31 to 0 are protected.
0
1
Blocks 29 to 0 are protected.
Blocks 30 and 31 can be written or erased.
0
1
0
Blocks 27 to 0 are protected.
Blocks 28 to 31 can be written or erased.
0
1
Blocks 25 to 0 are protected.
Blocks 26 and 31 can be written or erased.
0
1
0
Blocks 23 to 0 are protected.
Blocks 24 to 31 can be written or erased.
0
1
0
1
Blocks 21 to 0 are protected.
Blocks 22 to 31 can be written or erased.
0
1
0
Blocks 19 to 0 are protected.
Blocks 20 to 31 can be written or erased.
0
1
Blocks 17 to 0 are protected.
Blocks 18 to 31 can be written or erased.
0
1
0
Blocks 15 to 0 are protected.
Blocks 16 to 31 can be written or erased.
0
1
0
1
Blocks 13 to 0 are protected.
Blocks 14 to 31 can be written or erased.
0
1
0
1
0
Blocks 11 to 0 are protected.
Blocks 12 to 31 can be written or erased.
0
1
0
1
Blocks 9 to 0 are protected.
Blocks 10 to 31 can be written or erased.
0
1
0
Blocks 7 to 0 are protected.
Blocks 8 to 31 can be written or erased.
0
1
0
1
Blocks 5 to 0 are protected.
Blocks 6 to 31 can be written or erased.
0
1
0
Blocks 3 to 0 are protected.
Blocks 4 to 31 can be written or erased.
0
1
Blocks 1 and 0 are protected.
Blocks 2 to 31 can be written or erased.
1
All blocks can be written or erased.
Other than above
Setting prohibited