128 KByte Flash Module (S12XFTMR128K1V1)
MC9S12XHY-Family Reference Manual, Rev. 1.01
636
Freescale Semiconductor
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.
Table 19-17. P-Flash Protection Lower Address Range
FPLS[1:0]
Global Address Range
Protected Size
00
0x7F_8000–0x7F_83FF
1 Kbyte
01
0x7F_8000–0x7F_87FF
2 Kbytes
10
0x7F_8000–0x7F_8FFF
4 Kbytes
11
0x7F_8000–0x7F_9FFF
8 Kbytes
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