S9S12P64J0CFT Freescale Semiconductor, S9S12P64J0CFT Datasheet - Page 436
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S9S12P64J0CFT
Manufacturer Part Number
S9S12P64J0CFT
Description
16-bit Microcontrollers - MCU 16-bit 64K Flash
Manufacturer
Freescale Semiconductor
Datasheet
1.MC9S12P64VQK.pdf
(566 pages)
Specifications of S9S12P64J0CFT
Rohs
yes
Core
S12
Processor Series
MC9S12P
Data Bus Width
16 bit
Maximum Clock Frequency
25 MHz
Program Memory Size
64 KB
Data Ram Size
4 KB
On-chip Adc
Yes
Operating Supply Voltage
3.15 V to 5.5 V
Operating Temperature Range
- 40 C to + 125 C
Package / Case
QFN-48
Mounting Style
SMD/SMT
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128 KByte Flash Module (S12FTMRC128K1V1)
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
13.3.2.3
The FCCOBIX register is used to index the FCCOB register for Flash memory operations.
CCOBIX bits are readable and writable while remaining bits read 0 and are not writable.
436
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. Preferred KEYEN state to disable backdoor key access.
1. Preferred SEC state to set MCU to secured state.
KEYEN[1:0]
Figure 13-7. FCCOB Index Register (FCCOBIX)
SEC[1:0]
00
01
10
11
00
01
10
11
S12P-Family Reference Manual, Rev. 1.13
Table
Table 13-8. FSEC Field Descriptions
Table 13-10. Flash Security States
Table 13-9. Flash KEYEN States
0
0
5
13-9.
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)
13.5.
0
2
CCOBIX[2:0]
Freescale Semiconductor
0
1
Table
13-10. If the
0
0
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