Freescale Semiconductor Tower System Eval Kit for MC9S12GN32 TWR-S12GN32-KIT TWR-S12GN32-KIT Hoja De Datos

1020

Freescale Semiconductor

Upon clearing CCIF to launch the Program P-Flash command, the Memory Controller will program the
data words to the supplied global address and will then proceed to verify the data words read back as
expected. The CCIF flag will set after the Program P-Flash operation has completed.

The Program Once command restricts programming to a reserved 64 byte field (8 phrases) in the
nonvolatile information register located in P-Flash. The Program Once reserved field can be read using the
Read Once command as described in

. The Program Once command must only be issued

once since the nonvolatile information register in P-Flash cannot be erased. The Program Once command
must not be executed from the Flash block containing the Program Once reserved field to avoid code
runaway.

Upon clearing CCIF to launch the Program Once command, the Memory Controller first verifies that the
selected phrase is erased. If erased, then the selected phrase will be programmed and then verified with
read back. The CCIF flag will remain clear, setting only after the Program Once operation has completed.

1

Global address [2:0] must be 000

FSTAT

ACCERR

Set if CCOBIX[2:0] != 101 at command launch

Set if command not available in current mode (see

)

Set if an invalid global address [17:0] is supplied see

1

1

As defined by the memory map for FTMRG96K1.

Set if a misaligned phrase address is supplied (global address [2:0] != 000)

FPVIOL

Set if the global address [17:0] points to a protected area

MGSTAT1

Set if any errors have been encountered during the verify operation

MGSTAT0

Set if any non-correctable errors have been encountered during the verify
operation

000

0x07

Not Required

001

Program Once phrase index (0x0000 - 0x0007)

010

Program Once word 0 value

011

Program Once word 1 value

100

Program Once word 2 value

101

Program Once word 3 value