S912XHY128F0VLM Datasheet, PDF (608/802 Pages) Freescale Semiconductor, Inc – S12 Microcontrollers

256 KByte Flash Module (S12XFTMR256K1V1)
Register
FSTAT
Table 18-46. Erase P-Flash Sector Command Error Handling
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 18-26)
Set if an invalid global address [22:16] is supplied
Set if a misaligned phrase address is supplied (global address [2:0] != 000)
Set if the selected P-Flash sector is protected
Set if any errors have been encountered during the verify operation
Set if any non-correctable errors have been encountered during the verify
operation
18.4.2.10 Unsecure Flash Command
The Unsecure Flash command will erase the entire P-Flash and D-Flash memory space and, if the erase is
successful, will release security.
Table 18-47. Unsecure Flash Command FCCOB Requirements
CCOBIX[2:0]
000
FCCOB Parameters
0x0B
Not required
Upon clearing CCIF to launch the Unsecure Flash command, the Memory Controller will erase the entire
P-Flash and D-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. If the erase verify is not
successful, the Unsecure Flash operation sets MGSTAT1 and terminates without changing the security
state. During the execution of this command (CCIF=0) the user must not write to any Flash module
register. The CCIF flag is set after the Unsecure Flash operation has completed.
Table 18-48. Unsecure Flash Command Error Handling
Register
FSTAT
Error Bit
ACCERR
FPVIOL
MGSTAT1
MGSTAT0
Error Condition
Set if CCOBIX[2:0] != 000 at command launch
Set if command not available in current mode (see Table 18-26)
Set if any area of the P-Flash or D-Flash memory is protected
Set if any errors have been encountered during the verify operation
Set if any non-correctable errors have been encountered during the verify
operation
18.4.2.11 Verify Backdoor Access Key Command
The Verify Backdoor Access Key command will only execute if it is enabled by the KEYEN bits in the
FSEC register (see Table 18-7). The Verify Backdoor Access Key command releases security if
user-supplied keys match those stored in the Flash security bytes of the Flash configuration field (see
MC9S12XHY-Family Reference Manual, Rev. 1.01
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