S912XEP768J5MAGR Freescale Semiconductor, S912XEP768J5MAGR Datasheet - Page 1061
S912XEP768J5MAGR
Manufacturer Part Number
S912XEP768J5MAGR
Description
16-bit Microcontrollers - MCU 16-bit 768K Flash
Manufacturer
Freescale Semiconductor
Datasheet
1.S912XEG128J2MAL.pdf
(1324 pages)
Specifications of S912XEP768J5MAGR
Rohs
yes
Core
HCS12X
Processor Series
MC9S12
Data Bus Width
16 bit
Maximum Clock Frequency
50 MHz
Program Memory Size
768 KB
Data Ram Size
48 KB
On-chip Adc
Yes
Operating Supply Voltage
3.3 V to 5 V
Operating Temperature Range
- 40 C to + 125 C
Package / Case
LQFP-144
Mounting Style
SMD/SMT
Available stocks
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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 0x7F_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.
27.4.2.13 Set User Margin Level Command
The Set User Margin Level command causes the Memory Controller to set the margin level for future read
operations of a specific P-Flash or D-Flash block.
Upon clearing CCIF to launch the Set User Margin Level command, the Memory Controller will set the
user margin level for the targeted block and then set the CCIF flag.
Valid margin level settings for the Set User Margin Level command are defined in
Freescale Semiconductor
FERSTAT
Register
FSTAT
CCOBIX[2:0]
Table 27-57. Set User Margin Level Command FCCOB Requirements
Table 27-56. Verify Backdoor Access Key Command Error Handling
000
001
MGSTAT1
MGSTAT0
EPVIOLIF
ACCERR
Error Bit
FPVIOL
(CCOBIX=001)
Table 27-58. Valid Set User Margin Level Settings
0x0000
0x0001
CCOB
MC9S12XE-Family Reference Manual Rev. 1.25
Set if CCOBIX[2:0] != 100 at command launch
Set if a Load Data Field command sequence is currently active
Set if an incorrect backdoor key is supplied
Set if backdoor key access has not been enabled (KEYEN[1:0] != 10, see
Section
Set if the backdoor key has mismatched since the last reset
None
None
None
None
0x0D
27.3.2.2)
Return to Normal Level
User Margin-1 Level
FCCOB Parameters
Margin level setting
Level Description
Global address [22:16] to identify the
Error Condition
Chapter 27 512 KByte Flash Module (S12XFTM512K3V1)
(1)
Flash block
Table
27-58.
1061
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