Chapter 24 128 KByte Flash Module (S12XFTM128K2V1)
MC9S12XE-Family Reference Manual Rev. 1.19
Freescale Semiconductor
877
24.4.2.13 Set Field Margin Level Command
The Set Field Margin Level command, valid in special modes only, causes the Memory Controller to set
the margin level specified for future read operations of a specific P-Flash or D-Flash block.
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 24-58. Set Field Margin Level Command FCCOB Requirements
CCOBIX[2:0]
FCCOB Parameters
000
0x0E
Global address [22:16] to identify the Flash
block
001
Margin level setting
Table 24-59. 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
0x0004
Field Margin-0 Level
Table 24-60. 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
)
Set if an invalid global address [22:16] is supplied
(1)
1. As defined by the memory map for FTM256K2.
Set if an invalid margin level setting is supplied
FPVIOL
None
MGSTAT1
None
MGSTAT0
None
FERSTAT
EPVIOLIF
None
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