Chapter 25 256 KByte Flash Module (S12XFTM256K2V1)
MC9S12XE-Family Reference Manual , Rev. 1.19
Freescale Semiconductor
901
The Full Partition D-Flash command (see
) is used to program the EEE nonvolatile
information register fields where address 0x12_0000 defines the D-Flash partition for user access and
address 0x12_0004 defines the buffer RAM partition for EEE operations.
25.3.2
Register Descriptions
The Flash module contains a set of 20 control and status registers located between Flash module base +
0x0000 and 0x0013. A summary of the Flash module registers is given in
with detailed
descriptions in the following subsections.
Table 25-7. EEE Nonvolatile Information Register Fields
Global Address
(EEEIFRON)
Size
(Bytes)
Description
0x12_0000 – 0x12_0001
2
D-Flash User Partition (DFPART)
Refer to
Section 25.4.2.15, “Full Partition D-Flash Command
0x12_0002 – 0x12_0003
2
D-Flash User Partition (duplicate
(1)
)
1. Duplicate value used if primary value generates a double bit fault when read during the reset sequence.
0x12_0004 – 0x12_0005
2
Buffer RAM EEE Partition (ERPART)
Refer to
Section 25.4.2.15, “Full Partition D-Flash Command
0x12_0006 – 0x12_0007
2
Buffer RAM EEE Partition (duplicate
0x12_0008 – 0x12_007F
120
Reserved
Address
& Name
7
6
5
4
3
2
1
0
0x0000
FCLKDIV
R
FDIVLD
FDIV6
FDIV5
FDIV4
FDIV3
FDIV2
FDIV1
FDIV0
W
0x0001
FSEC
R
KEYEN1
KEYEN0
RNV5
RNV4
RNV3
RNV2
SEC1
SEC0
W
0x0002
FCCOBIX
R
0
0
0
0
0
CCOBIX2
CCOBIX1
CCOBIX0
W
0x0003
FECCRIX
R
0
0
0
0
0
ECCRIX2
ECCRIX1
ECCRIX0
W
0x0004
FCNFG
R
CCIE
0
0
IGNSF
0
0
FDFD
FSFD
W
0x0005
FERCNFG
R
ERSERIE
PGMERIE
0
EPVIOLIE
ERSVIE1
ERSVIE0
DFDIE
SFDIE
W
Figure 25-4. FTM256K2 Register Summary
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:
S12XE
products
in
208
MAPBGA
packages