MC9S12HY64 Datasheet, PDF (570/792 Pages) Freescale Semiconductor, Inc – S12 Microcontrollers

48 KByte Flash Module (S12FTMRC48K1V1)
0x0_4000
0x0_40FF
D-Flash Start = 0x0_4400
D-Flash End = 0x0_53FF
RAM Start = 0x0_5800
RAM End = 0x0_5AFF
0x0_6000
0x0_6800
P-Flash IFR 1 Kbyte
D-Flash Memory
4 Kbytes
Reserved 1 Kbyte
Scratch Ram 768 bytes (RAMON)
Reserved 1280 bytes
Reserved 2 Kbytes
Reserved 6 Kbytes
0x0_7FFF
Figure 16-3. D-Flash and Memory Controller Resource Memory Map
16.3.2 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 Figure 16-4 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
adversely affect Memory Controller behavior.
Address
& Name
0x0000
FCLKDIV
7
R FDIVLD
W
6
FDIVLCK
0x0001
FSEC
R KEYEN1
W
KEYEN0
0x0002
R
0
0
FCCOBIX _W
5
FDIV5
RNV5
0
4
FDIV4
RNV4
0
3
2
1
0
FDIV3
FDIV2
FDIV1
FDIV0
RNV3
RNV2
SEC1
SEC0
0
CCOBIX2 CCOBIX1 CCOBIX0
Figure 16-4. FTMRC48K1 Register Summary
MC9S12HY/HA-Family Reference Manual, Rev. 1.04
570
Freescale Semiconductor