S912XHY128F0VLM Datasheet, PDF (636/802 Pages) Freescale Semiconductor, Inc – S12 Microcontrollers

128 KByte Flash Module (S12XFTMR128K1V1)
Table 19-17. 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 19-11. 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.
MC9S12XHY-Family Reference Manual, Rev. 1.01
636
Freescale Semiconductor