UPD78F1502AGK-GAK-AX Datasheet, PDF (864/1031 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcontrollers

78K0R/Lx3
CHAPTER 27 FLASH MEMORY
Figure 27-12. Example of Executing Boot Swapping
Block number
Boot
cluster 1
Boot
cluster 0
7
Program
6
Program
5
Program
4
Program _{0 1 0 0 0 H}
3 Boot program
2 Boot program
1 Boot program
0 ^{Boot program} 0 0 0 0 0 H
Booted by boot cluster 0
Erasing block 4
7
Program
6
Program
5
Program
4
3 Boot program
2 Boot program
1 Boot program
0 Boot program
Erasing block 5
7 Program
6 Program
5
4
3 _{Boot program}
2 Boot program
1 Boot program
0 Boot program
Erasing block 6
7
Program
6
5
4
3 Boot program
2 Boot program
1 Boot program
0 ^{Boot program}
Erasing block 7
7
6
5
4
3 Boot program
2 Boot program
1 Boot program
0 Boot program
Writing blocks 4 to 7
7 New boot program
6 New boot program
5 New boot program
4 New boot program
3 Boot program
2 Boot program
1 Boot program
0 Boot program
Boot swap
7 Boot program
6 Boot program
5 Boot program
4 ^{Boot program} _{0 1 0 0 0 H}
3 New boot program
2 New boot program
1 New boot program
0 New boot program 0 0 0 0 0 H
Booted by boot cluster 1
Erasing block 4
7 Boot program
6 Boot program
5 ^{Boot program}
4
3 New boot program
2 New boot program
1 New boot program
0 ^{New boot program}
Erasing block 5
7 Boot program
6 Boot program
5
4
3 New boot program
2 New boot program
1 New boot program
0 ^{New boot program}
Erasing block 6
7 Boot program
6
5
4
3 New boot program
2 New boot program
1 New boot program
0 ^{New boot program}
Erasing block 7
7
6
5
4
3 New boot program
2 New boot program
1 ^{New boot program}
0 New boot program
Writing blocks 4 to 7
7 ^{New program}
6 New program
5 New program
4 New program _{0 1 0 0 0 H}
3 New boot program
2 New boot program
1 New boot program
0 New boot program 0 0 0 0 0 H
R01UH0004EJ0501 Rev.5.01
848
Jun 20, 2011