MC9S12GRMV1 Datasheet, PDF (868/1292 Pages) Freescale Semiconductor, Inc – MC9S12G Family Reference Manual and Data Sheet

32 KByte Flash Module (S12FTMRG32K1V1)
25.4.6.13 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 the P-Flash or EEPROM block.
Upon clearing CCIF to launch the Set Field Margin Level command, the Memory Controller will set the
Table 25-57. Set Field Margin Level Command FCCOB Requirements
CCOBIX[2:0]
000
001
0x0E
FCCOB Parameters
Flash block selection code [1:0]. See
Table 25-34
Margin level setting.
field margin level for the targeted block and then set the CCIF flag.
NOTE
When the EEPROM block is targeted, the EEPROM field margin levels are
applied only to the EEPROM reads. However, when the P-Flash block is
targeted, the P-Flash field margin levels are applied to both P-Flash and
EEPROM reads. It is not possible to apply field margin levels to the P-Flash
block only.
Valid margin level settings for the Set Field Margin Level command are defined in Table 25-58.
Table 25-58. Valid Set Field Margin Level Settings
CCOB
(CCOBIX=001)
Level Description
0x0000
Return to Normal Level
0x0001
User Margin-1 Level¹
0x0002
User Margin-0 Level²
0x0003
Field Margin-1 Level¹
0x0004
Field Margin-0 Level²
1 _{Read margin to the erased state}
2 _{Read margin to the programmed state}
MC9S12G Family Reference Manual, Rev.1.23
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Freescale Semiconductor