Freescale Semiconductor Demonstration Board for Freescale MC9S12XHY256 Microcontroller DEMO9S12XHY256 DEMO9S12XHY256 Manuale Utente

660

Freescale Semiconductor

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

Field margin levels must only be used during verify of the initial factory
programming.

Field margin levels can be used to check that Flash memory contents have
adequate margin for data retention at the normal level setting. If unexpected
results are encountered when checking Flash memory contents at field
margin levels, the Flash memory contents should be erased and
reprogrammed.

The Erase Verify D-Flash Section command will verify that a section of code in the D-Flash is erased. The
Erase Verify D-Flash Section command defines the starting point of the data to be verified and the number
of words.

0x0000

Return to Normal Level

0x0001

User Margin-1 Level

1

1

Read margin to the erased state

0x0002

User Margin-0 Level

2

2

Read margin to the programmed state

0x0003

Field Margin-1 Level

0x0004

Field Margin-0 Level

FSTAT

ACCERR

Set if CCOBIX[2:0] != 001 at command launch

Set if command not available in current mode (see

)

Set if an invalid global address [22:16] is supplied

Set if an invalid margin level setting is supplied

FPVIOL

None

MGSTAT1

None

MGSTAT0

None