Chapter 24 128 KByte Flash Module (S12XFTM128K2V1)
MC9S12XE-Family Reference Manual Rev. 1.19
Freescale Semiconductor
867
If a Flash block is read during execution of an algorithm (CCIF = 0) on that same block, the read operation
will return invalid data. If the SFDIF or DFDIF flags were not previously set when the invalid read
operation occurred, both the SFDIF and DFDIF flags will be set and the FECCR registers will be loaded
with the global address used in the invalid read operation with the data and parity fields set to all 0.
If the ACCERR or FPVIOL bits are set in the FSTAT register, the user must clear these bits before starting
any command write sequence (see
CAUTION
A Flash word or phrase must be in the erased state before being
programmed. Cumulative programming of bits within a Flash word or
phrase is not allowed.
24.4.2.1
Erase Verify All Blocks Command
The Erase Verify All Blocks command will verify that all P-Flash and D-Flash blocks have been erased.
Upon clearing CCIF to launch the Erase Verify All Blocks command, the Memory Controller will verify
that the entire Flash memory space is erased. The CCIF flag will set after the Erase Verify All Blocks
operation has completed.
24.4.2.2
Erase Verify Block Command
The Erase Verify Block command allows the user to verify that an entire P-Flash or D-Flash block has been
erased. The FCCOB upper global address bits determine which block must be verified.
Table 24-33. Erase Verify All Blocks Command FCCOB Requirements
CCOBIX[2:0]
FCCOB Parameters
000
0x01
Not required
Table 24-34. Erase Verify All Blocks Command Error Handling
Register
Error Bit
Error Condition
FSTAT
ACCERR
Set if CCOBIX[2:0] != 000 at command launch
FPVIOL
None
MGSTAT1
Set if any errors have been encountered during the read
(1)
1. As found in the memory map for FTM256K2.
MGSTAT0
Set if any non-correctable errors have been encountered during the read
FERSTAT
EPVIOLIF
None
Table 24-35. Erase Verify Block Command FCCOB Requirements
CCOBIX[2:0]
FCCOB Parameters
000
0x02
Global address [22:16] of the
Flash block to be verified
.
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
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currently
are
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available
from
Freescale
for
import
or
sale
in
the
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States
prior
to
September
2010:
S12XE
products
in
208
MAPBGA
packages