32 KByte Flash Module (S12FTMRG32K1V1)
MC9S12G Family Reference Manual Rev.1.27
NXP Semiconductors 853
25.4.6.10 Unsecure Flash Command
The Unsecure Flash command will erase the entire P-Flash and EEPROM memory space and, if the erase
is successful, will release security.
Upon clearing CCIF to launch the Unsecure Flash command, the Memory Controller will erase the entire
P-Flash and EEPROM 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.
25.4.6.11 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 25-10). The Verify Backdoor Access Key command releases security if
Table 25-49. Erase P-Flash Sector Command Error Handling
Register Error Bit Error Condition
FSTAT
ACCERR
Set if CCOBIX[2:0] != 001 at command launch
Set if command not available in current mode (see Table 25-27)
Set if an invalid global address [17:16] is supplied see Table 25-3)
1
1
As defined by the memory map for FTMRG32K1.
Set if a misaligned phrase address is supplied (global address [2:0] != 000)
FPVIOL Set if the selected P-Flash sector is protected
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
Table 25-50. Unsecure Flash Command FCCOB Requirements
CCOBIX[2:0] FCCOB Parameters
000 0x0B Not required
Table 25-51. Unsecure Flash Command Error Handling
Register Error Bit Error Condition
FSTAT
ACCERR
Set if CCOBIX[2:0] != 000 at command launch
Set if command not available in current mode (see Table 25-27)
FPVIOL Set if any area of the P-Flash or EEPROM memory is protected
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
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