mc9s12vr48 Freescale Semiconductor, Inc, mc9s12vr48 Datasheet - Page 501

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

17.4.6.13 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
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
Freescale Semiconductor
CCOBIX[2:0]
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.
Table 17-55. Set Field Margin Level Command FCCOB Requirements
000
001
1
2
(CCOBIX=001)
Table 17-56. Valid Set Field Margin Level Settings
Read margin to the erased state
Read margin to the programmed state
0x0000
0x0001
0x0002
0x0003
0x0004
CCOB
MC9S12VR Family Reference Manual, Rev. 2.2
Preliminary - Subject to Change Without Notice
0x0E
NOTE
Return to Normal Level
FCCOB Parameters
User Margin-1 Level
User Margin-0 Level
Field Margin-1 Level
Field Margin-0 Level
Margin level setting
Level Description
Global address [17:16] to identify the Flash
1
2
1
2
64 KByte Flash Module (S12FTMRG64K512V1)
block
Table
17-56.
501