Chapter 19 128 KB Flash Module (S12ZFTMRZ128K512V2)
MC9S12ZVM Family Reference Manual Rev. 1.3
724
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.
19.4.7.6
Program Once Command
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.
Table 19-41. Program P-Flash Command FCCOB Requirements
Register
FCCOB Parameters
FCCOB0
0x06
Global address [23:16] to
identify P-Flash block
FCCOB1
Global address [15:0] of phrase location to be programmed
(1)
1. Global address [2:0] must be 000
FCCOB2
Word 0 program value
FCCOB3
Word 1 program value
FCCOB4
Word 2 program value
FCCOB5
Word 3 program value
Table 19-42. Program P-Flash Command Error Handling
Register
Error Bit
Error Condition
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 [23:0] is supplied see
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
Table 19-43. Program Once Command FCCOB Requirements
CCOBIX[2:0]
FCCOB Parameters
FCCOB0
0x07
Not Required
FCCOB1
Program Once phrase index (0x0000 - 0x0007)
FCCOB2
Program Once word 0 value
