MC9S12HY64 Datasheet, PDF (648/792 Pages) Freescale Semiconductor, Inc – S12 Microcontrollers

64 KByte Flash Module (S12FTMRC64K1V1)
command described in Section 17.4.5.6. The Read Once command must not be executed from the Flash
block containing the Program Once reserved field to avoid code runaway.
Table 17-37. Read Once Command FCCOB Requirements
CCOBIX[2:0]
000
001
010
011
100
101
FCCOB Parameters
0x04
Not Required
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 17-38. Read Once Command Error Handling
Register
FSTAT
Error Bit
ACCERR
FPVIOL
MGSTAT1
MGSTAT0
Error Condition
Set if CCOBIX[2:0] != 001 at command launch
Set if command not available in current mode (see Table 17-27)
Set if an invalid phrase index is supplied
None
Set if any errors have been encountered during the read
Set if any non-correctable errors have been encountered during the read
17.4.5.5 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 17-39. Program P-Flash Command FCCOB Requirements
CCOBIX[2:0]
FCCOB Parameters
000
0x06
Global address [17:16] to
identify P-Flash block
001
Global address [15:0] of phrase location to be programmed¹
010
Word 0 program value
MC9S12HY/HA-Family Reference Manual, Rev. 1.04
648
Freescale Semiconductor