mc9s12e256 Freescale Semiconductor, Inc, mc9s12e256 Datasheet - Page 100

• Manufacturer Part Number: mc9s12e256
• Description: Hcs12 Microcontrollers 16-bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Chapter 2 256 Kbyte Flash Module (FTS256K2V1)
2.3.2.11
The banked FDATAHI and FDATALO registers are the Flash data registers.
All FDATAHI and FDATALO bits are readable but are not writable. After an array write as part of a
command write sequence, the FDATA registers will contain the data written. At the completion of a data
compress operation, the resulting 16-bit signature is stored in the FDATA registers. The data compression
signature is readable in the FDATA registers until a new command write sequence is started
2.3.2.12
This register is reserved for factory testing and is not accessible.
All bits read 0 and are not writable.
2.3.2.13
This register is reserved for factory testing and is not accessible.
All bits read 0 and are not writable.
100
Reset
Reset
Reset
Reset
W
W
W
W
R
R
R
R
Flash Data Registers (FDATA)
RESERVED1
RESERVED2
7
0
7
0
7
0
0
7
0
0
= Unimplemented or Reserved
= Unimplemented or Reserved
= Unimplemented or Reserved
= Unimplemented or Reserved
6
0
6
0
6
0
0
6
0
0
Figure 2-17. Flash Data Low Register (FDATALO)
Figure 2-16. Flash Data High Register (FDATAHI)
MC9S12E256 Data Sheet, Rev. 1.08
5
0
5
0
5
0
0
5
0
0
Figure 2-18. RESERVED1
Figure 2-19. RESERVED2
4
0
4
0
4
0
0
4
0
0
FDATALO
FDATAHI
3
0
3
0
3
0
0
3
0
0
2
0
2
0
2
0
0
2
0
0
Freescale Semiconductor
1
0
1
0
1
0
0
1
0
0
.
0
0
0
0
0
0
0
0
0
0