Freescale Semiconductor Demonstration Board for Freescale MC9S12XHY256 Microcontroller DEMO9S12XHY256 DEMO9S12XHY256 用户手册
产品代码
DEMO9S12XHY256
256 KByte Flash Module (S12XFTMR256K1V1)
MC9S12XHY-Family Reference Manual, Rev. 1.04
574
Freescale Semiconductor
Figure 18-3. D-Flash and Memory Controller Resource Memory Map
18.3.2
Register Descriptions
The Flash module contains a set of 20 control and status registers located between Flash module base +
0x0000 and 0x0013. A summary of the Flash module registers is given in
0x0000 and 0x0013. A summary of the Flash module registers is given in
with detailed
descriptions in the following subsections.
CAUTION
Writes to any Flash register must be avoided while a Flash command is
active (CCIF=0) to prevent corruption of Flash register contents and
Memory Controller behavior.
active (CCIF=0) to prevent corruption of Flash register contents and
Memory Controller behavior.
Address
& Name
7
6
5
4
3
2
1
0
0x0000
FCLKDIV
R
FDIVLD
FDIV6
FDIV5
FDIV4
FDIV3
FDIV2
FDIV1
FDIV0
W
0x0001
FSEC
R
KEYEN1
KEYEN0
RNV5
RNV4
RNV3
RNV2
SEC1
SEC0
W
Figure 18-4. FTMR256K1 Register Summary
0x12_FFFF
0x12_4000
0x12_1000
Memory Controller Scratch RAM (MGRAMON)
768 bytes
768 bytes
D-Flash Nonvolatile Information Register (DFIFRON)
128 bytes
128 bytes
D-Flash Memory
8 Kbytes
8 Kbytes
D-Flash START = 0x10_0000
0x12_0000
0x12_2000
0x12_E800
D-Flash END = 0x10_1FFF