Freescale Semiconductor Demonstration Board for Freescale MC9S12XHY256 Microcontroller DEMO9S12XHY256 DEMO9S12XHY256 用户手册
产品代码
DEMO9S12XHY256
128 KByte Flash Module (S12XFTMR128K1V1)
MC9S12XHY-Family Reference Manual, Rev. 1.04
Freescale Semiconductor
637
Figure 19-14. P-Flash Protection Scenarios
7
6
5
4
FPHS[1:0]
FPLS[1:0]
3
2
1
0
FPHS[1:0]
FPLS[1:0]
FPHDIS = 1
FPLDIS = 1
FPLDIS = 1
FPHDIS = 1
FPLDIS = 0
FPLDIS = 0
FPHDIS = 0
FPLDIS = 1
FPLDIS = 1
FPHDIS = 0
FPLDIS = 0
FPLDIS = 0
Scenario
Scenario
Unprotected region
Protected region with size
Protected region
Protected region with size
defined by FPLS
defined by FPHS
not defined by FPLS, FPHS
0x7F_8000
0x7F_FFFF
0x7F_8000
0x7F_FFFF
FLASH START
FLASH START
FPOPEN = 1
FPOPEN = 0