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Chapter 19 128 KB Flash Module (S12ZFTMRZ128K512V2)
MC9S12ZVM Family Reference Manual Rev. 1.3
Freescale Semiconductor
697
19.3.2.2
Flash Security Register (FSEC)
The FSEC register holds all bits associated with the security of the MCU and Flash module.
All bits in the FSEC register are readable but not writable.
During the reset sequence, the FSEC register is loaded with the contents of the Flash security byte in the
Flash configuration field at global address 0xFF_FE0F located in P-Flash memory (see
indicated by reset condition F in
. If a double bit fault is detected while reading the P-Flash
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.
18.6
19.6
0x12
44.6
45.6
0x2C
19.6
20.6
0x13
45.6
46.6
0x2D
20.6
21.6
0x14
46.6
47.6
0x2E
21.6
22.6
0x15
47.6
48.6
0x2F
22.6
23.6
0x16
48.6
49.6
0x30
23.6
24.6
0x17
49.6
50.6
0x31
24.6
25.6
0x18
25.6
26.6
0x19
1. BUSCLK is Greater Than this value.
2. BUSCLK is Less Than or Equal to this value.
Offset Module Base + 0x0001
7
6
5
4
3
2
1
0
R
KEYEN[1:0]
RNV[5:2]
SEC[1:0]
W
Reset
F
(1)
1. Loaded from Flash configuration field, during reset sequence.
F
1
F
1
F
1
F
1
F
1
F
1
F
1
= Unimplemented or Reserved
Figure 19-6. Flash Security Register (FSEC)
Table 19-8. FDIV values for various BUSCLK Frequencies
BUSCLK Frequency
(MHz)
FDIV[5:0]
BUSCLK Frequency
(MHz)
FDIV[5:0]
MIN
(1)
MAX
(2)
MIN
1
MAX
2
Содержание MC9S12ZVM series
Страница 116: ...Chapter 2 Port Integration Module S12ZVMPIMV1 MC9S12ZVM Family Reference Manual Rev 1 3 116 Freescale Semiconductor ...
Страница 242: ...Chapter 7 ECC Generation Module SRAM_ECCV1 MC9S12ZVM Family Reference Manual Rev 1 3 242 Freescale Semiconductor ...
Страница 384: ...Chapter 10 Supply Voltage Sensor BATSV3 MC9S12ZVM Family Reference Manual Rev 1 3 384 Freescale Semiconductor ...
Страница 484: ...Chapter 13 Programmable Trigger Unit PTUV2 MC9S12ZVM Family Reference Manual Rev 1 3 484 Freescale Semiconductor ...
Страница 662: ...Chapter 17 Gate Drive Unit GDUV4 MC9S12ZVM Family Reference Manual Rev 1 3 662 Freescale Semiconductor ...
Страница 684: ...Chapter 18 LIN Physical Layer S12LINPHYV2 MC9S12ZVM Family Reference Manual Rev 1 3 684 Freescale Semiconductor ...
Страница 740: ...Chapter 19 128 KB Flash Module S12ZFTMRZ128K512V2 MC9S12ZVM Family Reference Manual Rev 1 3 740 Freescale Semiconductor ...
Страница 756: ...Appendix A MCU Electrical Specifications MC9S12ZVM Family Reference Manual Rev 1 3 756 Freescale Semiconductor ...
Страница 772: ...Appendix D LINPHY Electrical Specifications MC9S12ZVM Family Reference Manual Rev 1 3 772 Freescale Semiconductor ...
Страница 776: ...Appendix E GDU Electrical Specifications MC9S12ZVM Family Reference Manual Rev 1 3 776 Freescale Semiconductor ...
Страница 788: ...Appendix I MSCAN Electrical Specifications MC9S12ZVM Family Reference Manual Rev 1 3 788 Freescale Semiconductor ...
Страница 790: ...Appendix J Package Information MC9S12ZVM Family Reference Manual Rev 1 3 790 Freescale Semiconductor ...