mc9s12vr48 Freescale Semiconductor, Inc, mc9s12vr48 Datasheet - Page 500

• Manufacturer Part Number: mc9s12vr48
• Description: S12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

64 KByte Flash Module (S12FTMRG64K512V1)
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.
Valid margin level settings for the Set User Margin Level command are defined in
500
Register
FSTAT
When the EEPROM block is targeted, the EEPROM user margin levels are
applied only to the EEPROM reads. However, when the P-Flash block is
targeted, the P-Flash user margin levels are applied to both P-Flash and
EEPROM reads. It is not possible to apply user margin levels to the P-Flash
block only.
User margin levels can be used to check that Flash memory contents have
adequate margin for normal level read operations. If unexpected results are
encountered when checking Flash memory contents at user margin levels, a
potential loss of information has been detected.
MGSTAT1
MGSTAT0
ACCERR
Table 17-54. Set User Margin Level Command Error Handling
Error Bit
FPVIOL
1
2
(CCOBIX=001)
Table 17-53. Valid Set User Margin Level Settings
Read margin to the erased state
Read margin to the programmed state
0x0000
0x0001
0x0002
CCOB
MC9S12VR Family Reference Manual,
Preliminary - Subject to Change Without Notice
Set if CCOBIX[2:0] != 001 at command launch
Set if command not available in current mode (see
Set if an invalid global address [17:16] is supplied see )
Set if an invalid margin level setting is supplied
None
None
None
NOTE
NOTE
Return to Normal Level
User Margin-1 Level
User Margin-0 Level
Level Description
Error Condition
Rev. 2.2
1
2
Table
17-26)
Table
Freescale Semiconductor
17-53.