MC9S12HY64 Datasheet, PDF (603/792 Pages) Freescale Semiconductor, Inc – S12 Microcontrollers

Register
FSTAT
48 KByte Flash Module (S12FTMRC48K1V1)
Table 16-52. Verify Backdoor Access Key Command Error Handling
Error Bit
ACCERR
FPVIOL
MGSTAT1
MGSTAT0
Error Condition
Set if CCOBIX[2:0] != 100 at command launch
Set if an incorrect backdoor key is supplied
Set if backdoor key access has not been enabled (KEYEN[1:0] != 10, see
Section 16.3.2.2)
Set if the backdoor key has mismatched since the last reset
None
None
None
16.4.5.12 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 the P-Flash or D-Flash block.
Table 16-53. Set User Margin Level Command FCCOB Requirements
CCOBIX[2:0]
000
001
0x0D
FCCOB Parameters
Global address [17:16] to identify the
Flash block
Margin level setting
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.
NOTE
When the D-Flash block is targeted, the D-Flash user margin levels are
applied only to the D-Flash reads. However, when the P-Flash block is
targeted, the P-Flash user margin levels are applied to both P-Flash and
D-Flash reads. It is not possible to apply user margin levels to the P-Flash
block only.
Valid margin level settings for the Set User Margin Level command are defined in Table 16-54.
Table 16-54. Valid Set User Margin Level Settings
CCOB
(CCOBIX=001)
Level Description
0x0000
Return to Normal Level
0x0001
User Margin-1 Level¹
0x0002
User Margin-0 Level²
1 _{Read margin to the erased state}
2 _{Read margin to the programmed state}
MC9S12HY/HA-Family Reference Manual, Rev. 1.04
Freescale Semiconductor
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