Datasheet

Chapter 2 256 Kbyte Flash Module (S12FTS256K2V1)
MC9S12E256 Data Sheet, Rev. 1.10
100 Freescale Semiconductor
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 RESERVED1
This register is reserved for factory testing and is not accessible.
All bits read 0 and are not writable.
2.3.2.13 RESERVED2
This register is reserved for factory testing and is not accessible.
All bits read 0 and are not writable.
Module Base + 0x000B
76543210
R FDATALO
W
Reset 00000000
= Unimplemented or Reserved
Figure 2-17. Flash Data Low Register (FDATALO)
Module Base + 0x000C
76543210
R00000000
W
Reset 00000000
= Unimplemented or Reserved
Figure 2-18. RESERVED1
Module Base + 0x000D
76543210
R00000000
W
Reset 00000000
= Unimplemented or Reserved
Figure 2-19. RESERVED2