Datasheet

Chapter 24 128 KByte Flash Module (S12XFTM128K2V1)
MC9S12XE-Family Reference Manual Rev. 1.25
Freescale Semiconductor 871
CAUTION
A P-Flash phrase must be in the erased state before being programmed.
Cumulative programming of bits within a Flash phrase is not allowed.
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.
24.4.2.6 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 block 0. The Program Once reserved field can be read
using the Read Once command as described in Section 24.4.2.4. The Program Once command must only
be issued once since the nonvolatile information register in P-Flash block 0 cannot be erased. The Program
Table 24-41. Program P-Flash Command FCCOB Requirements
CCOBIX[2:0] FCCOB Parameters
000 0x06
Global address [22:16] to
identify P-Flash block
001 Global address [15:0] of phrase location to be programmed
(1)
1. Global address [2:0] must be 000
010 Word 0 program value
011 Word 1 program value
100 Word 2 program value
101 Word 3 program value
Table 24-42. 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 Table 24-30)
Set if an invalid global address [22:0] is supplied
(1)
1. As defined by the memory map for FTM256K2.
Set if a misaligned phrase address is supplied (global address [2:0] != 000)
FPVIOL Set if the global address [22:0] points to a protected area
MGSTAT1 Set if any errors have been encountered during the verify operation
(2)
2. As found in the memory map for FTM256K2.
MGSTAT0
Set if any non-correctable errors have been encountered during the verify
operation
2
FERSTAT EPVIOLIF None