Datasheet

Chapter 28 256 Kbyte Flash Module (S12XFTX256K2V1)
MC9S12XDP512 Data Sheet, Rev. 2.21
1164 Freescale Semiconductor
28.3.2.9 Flash Address Registers (FADDR)
The FADDRHI and FADDRLO registers are the Flash address registers.
All FADDRHI and FADDRLO bits are readable but are not writable. After an array write as part of a
command write sequence, the FADDR registers will contain the mapped MCU address written.
28.3.2.10 Flash Data Registers (FDATA)
The FDATAHI and FDATALO registers are the Flash data registers.
Table 28-17. FCTL Field Descriptions
Field Description
6:0
NV[6:0]
Nonvolatile Bits — The NV[6:0] bits are available as nonvolatile bits. Refer to the Device User Guide for proper
use of the NV bits.
76543210
R FADDRHI
W
Reset 00000000
= Unimplemented or Reserved
Figure 28-16. Flash Address High Register (FADDRHI)
76543210
R FADDRLO
W
Reset 00000000
= Unimplemented or Reserved
Figure 28-17. Flash Address Low Register (FADDRLO)
76543210
R FDATAHI
W
Reset 00000000
= Unimplemented or Reserved
Figure 28-18. Flash Data High Register (FDATAHI)