S9S12P128J0MFT Freescale Semiconductor, S9S12P128J0MFT Datasheet - Page 463

• Manufacturer Part Number: S9S12P128J0MFT
• Description: MCU 128K FLASH AUTO 48-QFN
• Manufacturer: Freescale Semiconductor
• Series: HCS12r

Specifications of S9S12P128J0MFT

• Core Processor: HCS12
• Core Size: 16-Bit
• Speed: 32MHz
• Connectivity: CAN, SCI, SPI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 34
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 6K x 8
• Voltage - Supply (vcc/vdd): 1.72 V ~ 5.5 V
• Data Converters: A/D 10x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 48-QFN Exposed Pad
• Controller Family/series: S12
• No. Of I/o's: 34
• Ram Memory Size: 6KB
• Cpu Speed: 32MHz
• No. Of Timers: 1
• Rohs Compliant: Yes
• Processor Series: S12P
• Core: HCS12
• 3rd Party Development Tools: EWHCS12
• Development Tools By Supplier: KIT33812ECUEVME, DEMO9S12PFAME
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

13.4.5.11 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
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.
Upon clearing CCIF to launch the Verify Backdoor Access Key command, the Memory Controller will
check the FSEC KEYEN bits to verify that this command is enabled. If not enabled, the Memory
Controller sets the ACCERR bit in the FSTAT register and terminates. If the command is enabled, the
Memory Controller compares the key provided in FCCOB to the backdoor comparison key in the Flash
configuration field with Key 0 compared to 0x3_FF00, etc. If the backdoor keys match, security will be
released. If the backdoor keys do not match, security is not released and all future attempts to execute the
Verify Backdoor Access Key command are aborted (set ACCERR) until a reset occurs. The CCIF flag is
set after the Verify Backdoor Access Key operation has completed.
Freescale Semiconductor
Register
FSTAT
Table 13-51. Verify Backdoor Access Key Command FCCOB Requirements
Table
CCOBIX[2:0]
MGSTAT1
MGSTAT0
ACCERR
Error Bit
FPVIOL
000
001
010
011
100
Table 13-50. Unsecure Flash Command Error Handling
13-9). The Verify Backdoor Access Key command releases security if user-
S12P-Family Reference Manual, Rev. 1.13
Set if CCOBIX[2:0] != 000 at command launch
Set if command not available in current mode (see
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
0x0C
FCCOB Parameters
Key 0
Key 1
Key 2
Key 3
Error Condition
Not required
128 KByte Flash Module (S12FTMRC128K1V1)
Table
13-27)
Table 13-
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