MC9S12HY64 Datasheet, PDF (650/792 Pages) Freescale Semiconductor, Inc – S12 Microcontrollers

64 KByte Flash Module (S12FTMRC64K1V1)
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.
The reserved nonvolatile information register accessed by the Program Once command cannot be erased
and any attempt to program one of these phrases a second time will not be allowed. Valid phrase index
values for the Program Once command range from 0x0000 to 0x0007. During execution of the Program
Once command, any attempt to read addresses within P-Flash will return invalid data.
Table 17-42. Program Once Command Error Handling
Register
Error Bit
Error Condition
Set if CCOBIX[2:0] != 101 at command launch
FSTAT
ACCERR
FPVIOL
Set if command not available in current mode (see Table 17-27)
Set if an invalid phrase index is supplied
Set if the requested phrase has already been programmed¹
None
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
1 _{If a Program Once phrase is initially programmed to 0xFFFF_FFFF_FFFF_FFFF, the Program Once command will}
be allowed to execute again on that same phrase.
17.4.5.7 Erase All Blocks Command
The Erase All Blocks operation will erase the entire P-Flash and D-Flash memory space.
Table 17-43. Erase All Blocks Command FCCOB Requirements
CCOBIX[2:0]
000
FCCOB Parameters
0x08
Not required
Upon clearing CCIF to launch the Erase All Blocks command, the Memory Controller will erase the entire
Flash memory space and verify that it is erased. If the Memory Controller verifies that the entire Flash
memory space was properly erased, security will be released. During the execution of this command
(CCIF=0) the user must not write to any Flash module register. The CCIF flag will set after the Erase All
Blocks operation has completed.
MC9S12HY/HA-Family Reference Manual, Rev. 1.04
650
Freescale Semiconductor