S912XEG128J2MAA Datasheet, PDF (878/1324 Pages) Freescale Semiconductor, Inc – Microcontrollers

Chapter 24 128 KByte Flash Module (S12XFTM128K2V1)
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 24-59.
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⁾
0x0002
User Margin-0 Level⁽²⁾
0x0003
Field Margin-1 Level¹
0x0004
Field Margin-0 Level²
1. Read margin to the erased state
2. Read margin to the programmed state
Table 24-60. Set Field Margin Level Command Error Handling
Register
Error Bit
Error Condition
Set if CCOBIX[2:0] != 001 at command launch
ACCERR
Set if command not available in current mode (see Table 24-30)
Set if an invalid global address [22:16] is supplied⁽¹⁾
FSTAT
Set if an invalid margin level setting is supplied
FPVIOL None
MGSTAT1 None
MGSTAT0 None
FERSTAT
EPVIOLIF None
1. As defined by the memory map for FTM256K2.
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.
MC9S12XE-Family Reference Manual Rev. 1.25
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Freescale Semiconductor