MM912H634CV1AER2 Freescale Semiconductor, MM912H634CV1AER2 Datasheet - Page 320

• Manufacturer Part Number: MM912H634CV1AER2
• Description: 64KS12 LIN2xLS/HS Isense
• Manufacturer: Freescale Semiconductor
• Series: -r

Specifications of MM912H634CV1AER2

• Applications: Automotive
• Core Processor: HCS12
• Program Memory Type: FLASH (64 kB)
• Controller Series: HCS12
• Ram Size: 6K x 8
• Interface: LIN
• Number Of I /o: -
• Voltage - Supply: 5.5 V ~ 27 V
• Operating Temperature: -40°C ~ 105°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP Exposed Pad
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

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.
4.40.4.5.12
The Set User Margin Level command causes the Memory Controller to set the margin level for future read operations of the
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
Register
FSTAT
Set User Margin Level Command
When the D-Flash block is targeted, the D-Flash user margin levels are applied only to the
D-Flash reads. However, when the P-Flash block is targeted, the P-Flash user margin levels
are applied to both P-Flash and D-Flash reads. It is not possible to apply user margin levels
to the P-Flash block only.
CCOBIX[2:0]
000
001
MGSTAT1
MGSTAT0
ACCERR
Error Bit
FPVIOL
Table 471. Set User Margin Level Command FCCOB Requirements
Table 470. Verify Backdoor Access Key Command Error Handling
Note:
220.
221.
CCOB (CCOBIX=001)
Read margin to the erased state
Read margin to the programmed state
0x0000
0x0001
0x0002
Table 472. Valid Set User Margin Level Settings
Set if CCOBIX[2:0] != 100 at command launch
Set if an incorrect backdoor key is supplied
Set if backdoor key access has not been enabled (KEYEN[1:0] != 10, see
Set if the backdoor key has mismatched since the last reset
None
None
None
MM912_634 Advance Information, Rev. 4.0
0x0D
NOTE
FCCOB Parameters
Margin level setting
User Margin-1 Level
User Margin-0 Level
Return to Normal Level
Level Description
Global address [17:16] to identify the Flash
Error Condition
Table
(220)
(221)
block
472.
Section
4.40.3.2.2)
320