
Chapter 29 128 Kbyte Flash Module (S12XFTX128K1V1)
MC9S12XDP512 Data Sheet, Rev. 2.17
1206
Freescale Semiconductor
29.3.2.9
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.
29.3.2.10 Flash Data Registers (FDATA)
The FDATAHI and FDATALO registers are the Flash data registers.
Table 29-17. 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.
7
6
5
4
3
2
1
0
R
FADDRHI
W
Reset
0
0
0
0
0
0
0
0
= Unimplemented or Reserved
Figure 29-14. Flash Address High Register (FADDRHI)
7
6
5
4
3
2
1
0
R
FADDRLO
W
Reset
0
0
0
0
0
0
0
0
= Unimplemented or Reserved
Figure 29-15. Flash Address Low Register (FADDRLO)
7
6
5
4
3
2
1
0
R
FDATAHI
W
Reset
0
0
0
0
0
0
0
0
= Unimplemented or Reserved
Figure 29-16. Flash Data High Register (FDATAHI)