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User margin levels can be used to check that NVM memory
contents have adequate margin for normal level read operations.
If unexpected results are encountered when checking NVM
memory contents at user margin levels, a potential loss of
information has been detected.
11.3.10.13 Set factory margin level command
The set factory margin Level command causes the memory controller to set the margin
level specified for future read operations of the flash block.
Table 11-36. Set factory margin level command FCCOB requirements
CCOBIX[2:0]
000
001
010
Upon clearing FSTAT[CCIF] to launch the set factory margin level command, the
memory controller will set the factory margin level for the targeted block and then set the
FSTAT[CCIF] flag.
Valid margin level settings for the set factory margin level command are defined in the
following tables.
Table 11-37. Valid set factory margin level settings
CCOB
(CCOBIX = 010)
0x0000
0x0001
0x0002
0x0003
0x0004
1. Read margin to the erased state
2. Read margin to the programmed state
NXP Semiconductors
Note
FCCOBHI parameters
0x0E
Global address [15:0] to identify flash block
Note
MC9S08SU16 Reference Manual, Rev. 5, 4/2017
Chapter 11 Flash Memory Module (FTMRH)
FCCOBLO parameters
Global address [23:16] to identify flash block
Margin level setting
Level description
Return to normal level
1
User margin-1 level
2
User margin-0 level
1
Factory margin-1 level
2
Factory margin-0 level
179
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