Chapter 27 512 KByte Flash Module (S12XFTM512K3V1)
MC9S12XE-Family Reference Manual , Rev. 1.19
Freescale Semiconductor
1061
27.4.2.13 Set User Margin Level Command
The Set User Margin Level command causes the Memory Controller to set the margin level for future read
operations of a specific P-Flash or D-Flash block.
Upon clearing CCIF to launch the Set User Margin Level command, the Memory Controller will set the
user margin level for the targeted block and then set the CCIF flag.
Valid margin level settings for the Set User Margin Level command are defined in
Table 27-56. Verify Backdoor Access Key Command Error Handling
Register
Error Bit
Error Condition
FSTAT
ACCERR
Set if CCOBIX[2:0] != 100 at command launch
Set if a Load Data Field command sequence is currently active
Set if an incorrect backdoor key is supplied
Set if backdoor key access has not been enabled (KEYEN[1:0] != 10, see
)
Set if the backdoor key has mismatched since the last power down
FPVIOL
None
MGSTAT1
None
MGSTAT0
None
FERSTAT
EPVIOLIF
None
Table 27-57. Set User Margin Level Command FCCOB Requirements
CCOBIX[2:0]
FCCOB Parameters
000
0x0D
Global address [22:16] to identify the
Flash block
001
Margin level setting
Table 27-58. Valid Set User 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
Because
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an
order
from
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United
States
International
Trade
Commission,
BGA-packaged
product
lines
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part
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currently
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available
from
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for
import
or
sale
in
the
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prior
to
September
2010:
S12XE
products
in
208
MAPBGA
packages
