S9S12P32J0MFT Freescale Semiconductor, S9S12P32J0MFT Datasheet - Page 463
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S9S12P32J0MFT
Manufacturer Part Number
S9S12P32J0MFT
Description
MCU 128K FLASH AUTO 48-QFN
Manufacturer
Freescale Semiconductor
Series
HCS12r
Datasheet
1.S9S12P32J0MFT.pdf
(566 pages)
Specifications of S9S12P32J0MFT
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
128KB (128K 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
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
S9S12P32J0MFT
Manufacturer:
LT
Quantity:
728
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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-
463
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