
Chapter 23 1024 KByte Flash Module (S12XFTM1024K5V2)
MC9S12XE-Family Reference Manual , Rev. 1.07
892
Freescale Semiconductor
23.4.2.11 Unsecure Flash Command
The Unsecure Flash command will erase the entire P-Flash and D-Flash memory space and, if successful,
will release security.
Upon clearing CCIF to launch the Unsecure Flash command, the Memory Controller will erase the entire
Flash memory space and verify that it is erased. The CCIF flag will set after the Unsecure Flash operation
has completed. If the Memory Controller detects a programmed location in the Flash memory space the
Unsecure Flash operation will terminate without releasing security. If the Memory Controller verifies that
the entire Flash memory space is erased, security will be released.
Table 23-52. Unsecure Flash Command FCCOB Requirements
CCOBIX[2:0]
FCCOB Parameters
000
0x0B
Not required
Table 23-53. Unsecure Flash Command Error Handling
Register
Error Bit
Error Condition
FSTAT
ACCERR
Set if CCOBIX[2:0] != 000 at command launch
Set if a Load Data Field command sequence is currently active
Set if command not available in current mode (see
Table 23-29
)
FPVIOL
Set if any area of the P-Flash 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
FERSTAT
EPVIOLIF
Set if any area of the buffer RAM EEE partition is protected