mc9s12xd256 Freescale Semiconductor, Inc, mc9s12xd256 Datasheet - Page 1124

• Manufacturer Part Number: mc9s12xd256
• Description: Hcs12x Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Chapter 27 512 Kbyte Flash Module (S12XFTX512K4V2)
The FCTL register is loaded from the Flash Configuration Field byte at global address 0x7F_FF0E during
the reset sequence, indicated by F in
27.3.2.9
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.
27.3.2.10 Flash Data Registers (FDATA)
The FDATAHI and FDATALO registers are the Flash data registers.
1124
NV[7:0]
Reset
Reset
Reset
Field
7-0
W
W
W
R
R
R
Non volatile Bits — The NV[7:0] bits are available as nonvolatile bits. Refer to the Device User Guide for proper
use of the NV bits.
Flash Address Registers (FADDR)
0
0
0
7
7
7
= Unimplemented or Reserved
= Unimplemented or Reserved
= Unimplemented or Reserved
Figure 27-17. Flash Address Low Register (FADDRLO)
0
Figure 27-16. Flash Address High Register (FADDRHI)
0
0
6
6
6
Figure 27-18. Flash Data High Register (FDATAHI)
Table 27-19. FCTL Field Descriptions
MC9S12XDP512 Data Sheet, Rev. 2.17
Figure
0
0
0
5
5
5
27-15.
0
0
0
4
4
4
FADDRLO
FADDRHI
FDATAHI
Description
0
0
0
3
3
3
0
0
0
2
2
2
Freescale Semiconductor
0
0
0
1
1
1
0
0
0
0
0
0