128 KByte Flash Module (S12FTMRC128K1V1)
command described in Section 13.4.5.6. The Read Once command must not be executed from the Flash
block containing the Program Once reserved field to avoid code runaway.
Table 13-37. Read Once Command FCCOB Requirements
CCOBIX[2:0]
FCCOB Parameters
Not Required
000
001
010
011
100
101
0x04
Read Once phrase index (0x0000 - 0x0007)
Read Once word 0 value
Read Once word 1 value
Read Once word 2 value
Read Once word 3 value
Upon clearing CCIF to launch the Read Once command, a Read Once phrase is fetched and stored in the
FCCOB indexed register. The CCIF flag will set after the Read Once operation has completed. Valid
phrase index values for the Read Once command range from 0x0000 to 0x0007. During execution of the
Read Once command, any attempt to read addresses within P-Flash block will return invalid data.
8
Table 13-38. Read Once Command Error Handling
Register
Error Bit
Error Condition
Set if CCOBIX[2:0] != 001 at command launch
Set if command not available in current mode (see Table 13-27)
Set if an invalid phrase index is supplied
ACCERR
FSTAT
FPVIOL
MGSTAT1
MGSTAT0
None
Set if any errors have been encountered during the read
Set if any non-correctable errors have been encountered during the read
13.4.5.5 Program P-Flash Command
The Program P-Flash operation will program a previously erased phrase in the P-Flash memory using an
embedded algorithm.
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.
Table 13-39. Program P-Flash Command FCCOB Requirements
CCOBIX[2:0]
FCCOB Parameters
Global address [17:16] to
000
0x06
identify P-Flash block
001
010
Global address [15:0] of phrase location to be programmed(1)
Word 0 program value
S12P-Family Reference Manual, Rev. 1.13
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Freescale Semiconductor
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