MC9S12HZ256 Datasheet, PDF (70/692 Pages) Freescale Semiconductor, Inc – HCS12 Microcontrollers

Chapter 2 256 Kbyte Flash Module (FTS256K2V1)
FPHS[1:0]
00
01
10
11
Table 2-13. Flash Protection Higher Address Range
Unpaged
Address Range
0xF800–0xFFFF
0xF000–0xFFFF
0xE000–0xFFFF
0xC000–0xFFFF
Paged
Address Range
0x0037/0x003F: 0xC800–0xCFFF
0x0037/0x003F: 0xC000–0xCFFF
0x0037/0x003F: 0xB000–0xCFFF
0x0037/0x003F: 0x8000–0xCFFF
FPLS[1:0]
00
01
10
11
Table 2-14. Flash Protection Lower Address Range
Unpaged
Address Range
0x4000–0x43FF
0x4000–0x47FF
0x4000–0x4FFF
0x4000–0x5FFF
Paged
Address Range
0x0036/0x003E: 0x8000–0x83FF
0x0036/0x003E: 0x8000–0x87FF
0x0036/0x003E: 0x8000–0x8FFF
0x0036/0x003E: 0x8000–0x9FFF
Protected Size
2 Kbytes
4 Kbytes
8 Kbytes
16 Kbytes
Protected Size
1 Kbyte
2 Kbytes
4 Kbytes
8 Kbytes
All possible Flash protection scenarios are illustrated in Figure 2-9. Although the protection scheme is
loaded from the Flash array after reset, 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.
MC9S12HZ256 Data Sheet, Rev. 2.04
70
Freescale Semiconductor