MC9S12XS256RMV1 Datasheet, PDF (526/738 Pages) Freescale Semiconductor, Inc – Reference Manual

256 KByte Flash Module (S12XFTMR256K1V1)
Table 18-20. P-Flash Protection Lower Address Range
FPLS[1:0]
00
01
10
11
Global Address Range
0x7F_8000–0x7F_83FF
0x7F_8000–0x7F_87FF
0x7F_8000–0x7F_8FFF
0x7F_8000–0x7F_9FFF
Protected Size
1 Kbyte
2 Kbytes
4 Kbytes
8 Kbytes
All possible P-Flash protection scenarios are shown in Figure 18-14. Although the protection scheme is
loaded from the Flash memory at global address 0x7F_FF0C during the reset sequence, it can be changed
by the user. The P-Flash protection scheme can be used by applications requiring reprogramming in single
chip mode while providing as much protection as possible if reprogramming is not required.
S12XS Family Reference Manual, Rev. 1.13
526
Freescale Semiconductor