S9S12G64F0MLF Freescale Semiconductor, S9S12G64F0MLF Datasheet - Page 1097

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S9S12G64F0MLF

Manufacturer Part Number
S9S12G64F0MLF
Description
16-bit Microcontrollers - MCU S12 Core,64kFlash,Au
Manufacturer
Freescale Semiconductor
Datasheet

Specifications of S9S12G64F0MLF

Rohs
yes
Core
S12
Processor Series
MC9S12G
Data Bus Width
16 bit
Maximum Clock Frequency
25 MHz
Program Memory Size
64 KB
Data Ram Size
2 KB
On-chip Adc
Yes
Operating Supply Voltage
3.13 V to 5.5 V
Operating Temperature Range
- 40 C to + 125 C
Package / Case
LQFP-48
Mounting Style
SMD/SMT

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indicated by reset condition F in
phrase containing the Flash security byte during the reset sequence, all bits in the FSEC register will be set
to leave the Flash module in a secured state with backdoor key access disabled.
The security function in the Flash module is described in
30.3.2.3
The FCCOBIX register is used to index the FCCOB register for Flash memory operations.
Freescale Semiconductor
KEYEN[1:0]
RNV[5:2]
SEC[1:0]
Offset Module Base + 0x0002
Reset
Field
7–6
5–2
1–0
W
R
Backdoor Key Security Enable Bits — The KEYEN[1:0] bits define the enabling of backdoor key access to the
Flash module as shown in
Reserved Nonvolatile Bits — The RNV bits should remain in the erased state for future enhancements.
Flash Security Bits — The SEC[1:0] bits define the security state of the MCU as shown in
Flash module is unsecured using backdoor key access, the SEC bits are forced to 10.
Flash CCOB Index Register (FCCOBIX)
0
0
7
= Unimplemented or Reserved
0
0
6
1
1
Preferred KEYEN state to disable backdoor key access.
Preferred SEC state to set MCU to secured state.
KEYEN[1:0]
Figure 30-7. FCCOB Index Register (FCCOBIX)
SEC[1:0]
MC9S12G Family Reference Manual, Rev.1.23
00
01
10
11
00
01
10
11
Figure
Table
Table 30-9. FSEC Field Descriptions
Table 30-11. Flash Security States
Table 30-10. Flash KEYEN States
0
0
5
30-10.
30-6. If a double bit fault is detected while reading the P-Flash
Status of Backdoor Key Access
0
0
4
Status of Security
Description
UNSECURED
DISABLED
SECURED
DISABLED
DISABLED
SECURED
SECURED
ENABLED
Section
0
0
3
1
1
30.5.
192 KByte Flash Module (S12FTMRG192K2V1)
0
2
CCOBIX[2:0]
0
1
Table
30-11. If the
0
0
1099

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