DEMO9S12XEP100 Freescale Semiconductor, DEMO9S12XEP100 Datasheet - Page 1187

• Manufacturer Part Number: DEMO9S12XEP100
• Description: BOARD DEMO FOR MC9S12XEP100
• Manufacturer: Freescale Semiconductor
• Type: MCUr

Specifications of DEMO9S12XEP100

• Contents: Board, Cables, CD
• Processor To Be Evaluated: MC9S12XEP100
• Data Bus Width: 16 bit
• Interface Type: RS-232
• Silicon Manufacturer: Freescale
• Core Architecture: S12
• Core Sub-architecture: S12
• Silicon Core Number: MC9S12
• Silicon Family Name: S12XE
• Rohs Compliant: Yes
• For Use With/related Products: MC9S12XEP100
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

29.4.2.11 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.
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.
29.4.2.12 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
supplied keys match those stored in the Flash security bytes of the Flash configuration field (see
3). The Verify Backdoor Access Key command must not be executed from the Flash block containing the
backdoor comparison key to avoid code runaway.
Freescale Semiconductor
FERSTAT
Register
FSTAT
Table 29-55. Verify Backdoor Access Key Command FCCOB Requirements
Table
CCOBIX[2:0]
CCOBIX[2:0]
Table 29-53. Unsecure Flash Command FCCOB Requirements
MGSTAT1
MGSTAT0
EPVIOLIF
ACCERR
Error Bit
FPVIOL
000
000
001
010
011
100
Table 29-54. Unsecure Flash Command Error Handling
29-11). The Verify Backdoor Access Key command releases security if user-
MC9S12XE-Family Reference Manual , Rev. 1.23
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
Set if any area of the P-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
Set if any area of the buffer RAM EEE partition is protected
0x0C
0x0B
FCCOB Parameters
FCCOB Parameters
Key 0
Key 1
Key 2
Key 3
Chapter 29 1024 KByte Flash Module (S12XFTM1024K5V2)
Error Condition
Not required
Not required
Table
29-30)
Table 29-
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