S912XHZ512F1VAG Datasheet, PDF (143/978 Pages) Freescale Semiconductor, Inc – Covers MC9S12XHZ384, MC9S12XHZ256

Chapter 3 512 Kbyte Flash Module (S12XFTX512K4V3)
All possible Flash protection scenarios are shown in Figure 3-11. Although the protection scheme is
loaded from the Flash array at global address 0x7F_FF0D during the reset sequence, it can be changed by
the user. This protection scheme can be used by applications requiring re-programming in single chip
mode while providing as much protection as possible if re-programming is not required.
MC9S12XHZ512 Data Sheet, Rev. 1.06
Freescale Semiconductor
143