128 KByte Flash Module (S12XFTMR128K1V1)
MC9S12XHY-Family Reference Manual, Rev. 1.01
660
Freescale Semiconductor
Upon clearing CCIF to launch the Set Field Margin Level command, the Memory Controller will set the
field margin level for the targeted block and then set the CCIF flag. Valid margin level settings for the Set
Field Margin Level command are defined in
Table 19-54
.
CAUTION
Field margin levels must only be used during verify of the initial factory
programming.
NOTE
Field margin levels can be used to check that Flash memory contents have
adequate margin for data retention at the normal level setting. If unexpected
results are encountered when checking Flash memory contents at field
margin levels, the Flash memory contents should be erased and
reprogrammed.
19.3.2.14 Erase Verify D-Flash Section Command
The Erase Verify D-Flash Section command will verify that a section of code in the D-Flash is erased. The
Erase Verify D-Flash Section command defines the starting point of the data to be verified and the number
of words.
Table 19-54. Valid Set Field Margin Level Settings
CCOB
(CCOBIX=001)
Level Description
0x0000
Return to Normal Level
0x0001
User Margin-1 Level
1
1
Read margin to the erased state
0x0002
User Margin-0 Level
2
2
Read margin to the programmed state
0x0003
Field Margin-1 Level
1
0x0004
Field Margin-0 Level
2
Table 19-55. Set Field Margin Level Command Error Handling
Register
Error Bit
Error Condition
FSTAT
ACCERR
Set if CCOBIX[2:0] != 001 at command launch
Set if command not available in current mode (see
Table 19-25
)
Set if an invalid global address [22:16] is supplied
Set if an invalid margin level setting is supplied
FPVIOL
None
MGSTAT1
None
MGSTAT0
None
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