mc9s12xs128 Freescale Semiconductor, Inc, mc9s12xs128 Datasheet - Page 592

• Manufacturer Part Number: mc9s12xs128
• Description: Hcs12 Microcontrollers 16-bit Automotive Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

128 KByte Flash Module (S12XFTMR128K1V1)
Upon clearing CCIF to launch the Erase Verify P-Flash Section command, the Memory Controller will
verify the selected section of Flash memory is erased. The CCIF flag will set after the Erase Verify P-Flash
Section operation has completed.
19.4.2.4
The Read Once command provides read access to a reserved 64 byte field (8 phrases) located in the
nonvolatile information register of P-Flash block 0. The Read Once field is programmed using the
Program Once command described in
from the Flash block containing the Program Once reserved field to avoid code runaway.
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
592
Register
FSTAT
Read Once Command
Table 19-35. Erase Verify P-Flash Section Command FCCOB Requirements
Table 19-36. Erase Verify P-Flash Section Command Error Handling
CCOBIX[2:0]
MGSTAT1
MGSTAT0
ACCERR
Error Bit
FPVIOL
Table 19-37. Read Once Command FCCOB Requirements
CCOBIX[2:0]
000
001
010
011
100
101
000
001
010
S12XS Family Reference Manual, Rev. 1.10
Set if CCOBIX[2:0] != 010 at command launch
Set if command not available in current mode (see
Set if an invalid global address [22:0] is supplied
Set if a misaligned phrase address is supplied (global address [2:0] != 000)
Set if the requested section crosses a 128 Kbyte boundary
None
Set if any errors have been encountered during the read
Set if any non-correctable errors have been encountered during the read
Global address [15:0] of the first phrase to be verified
Section
Read Once phrase index (0x0000 - 0x0007)
0x04
Number of phrases to be verified
0x03
19.4.2.6. The Read Once command must not be executed
Read Once word 0 value
Read Once word 1 value
Read Once word 2 value
Read Once word 3 value
FCCOB Parameters
FCCOB Parameters
Global address [22:16] of
Error Condition
a P-Flash block
Not Required
Table
19-28)
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