MC9S12XDP512MAG Freescale, MC9S12XDP512MAG Datasheet - Page 1113
MC9S12XDP512MAG
Manufacturer Part Number
MC9S12XDP512MAG
Description
Manufacturer
Freescale
Datasheet
1.MC9S12XDP512MAG.pdf
(1348 pages)
Specifications of MC9S12XDP512MAG
Cpu Family
HCS12
Device Core Size
16b
Frequency (max)
40MHz
Interface Type
CAN/I2C/SCI/SPI
Total Internal Ram Size
32KB
# I/os (max)
119
Number Of Timers - General Purpose
12
Operating Supply Voltage (typ)
2.5/5V
Operating Supply Voltage (max)
2.75/5.5V
Operating Supply Voltage (min)
2.35/3.15V
On-chip Adc
2(24-chx10-bit)
Instruction Set Architecture
CISC
Operating Temp Range
-40C to 125C
Operating Temperature Classification
Automotive
Mounting
Surface Mount
Pin Count
144
Package Type
LQFP
Program Memory Type
Flash
Program Memory Size
512KB
Lead Free Status / RoHS Status
Compliant
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All bits in the FSEC register are readable but are not writable.
The FSEC register is loaded from the Flash Configuration Field at address 0x7F_FF0F during the reset
sequence, indicated by F in
The security function in the Flash module is described in
27.3.2.3
The FTSTMOD register is used to control Flash test features.
Freescale Semiconductor
KEYEN[1:0]
RNV[5:2]
SEC[1:0]
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[5:2] 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[1:0] bits are forced to 1:0.
Flash Test Mode Register (FTSTMOD)
F
7
KEYEN
= Unimplemented or Reserved
1 Preferred KEYEN state to disable Backdoor Key Access.
1 Preferred SEC state to set MCU to secured state.
F
6
Figure
KEYEN[1:0]
SEC[1:0]
Figure 27-5. Flash Security Register (FSEC)
01
01
00
10
11
00
10
11
1
1
Table
Table 27-4. FSEC Field Descriptions
27-5.
MC9S12XDP512 Data Sheet, Rev. 2.21
RNV5
Table 27-6. Flash Security States
Table 27-5. Flash KEYEN States
F
5
27-5.
RNV4
Status of Backdoor Key Access
F
4
Description
Status of Security
Section 27.6, “Flash Module
UNSECURED
DISABLED
DISABLED
DISABLED
SECURED
SECURED
SECURED
ENABLED
RNV3
Chapter 27 512 Kbyte Flash Module (S12XFTX512K4V2)
F
3
RNV2
F
2
F
1
Security”.
Table
SEC
27-6. If the
F
0
1115
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