mc9s12xs128 Freescale Semiconductor, Inc, mc9s12xs128 Datasheet - Page 579

• Manufacturer Part Number: mc9s12xs128
• Description: Hcs12 Microcontrollers 16-bit Automotive Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

P-Flash phrase containing the D-Flash protection byte during the reset sequence, the DPOPEN bit will be
cleared and DPS bits will be set to leave the D-Flash memory fully protected.
Trying to alter data in any protected area in the D-Flash memory will result in a protection violation error
and the FPVIOL bit will be set in the FSTAT register. Block erase of the D-Flash memory is not possible
if any of the D-Flash sectors are protected.
Freescale Semiconductor
DPOPEN
DPS[4:0]
Field
4–0
7
D-Flash Protection Control
0 Enables D-Flash memory protection from program and erase with protected address range defined by DPS
1 Disables D-Flash memory protection from program and erase
D-Flash Protection Size — The DPS[4:0] bits determine the size of the protected area in the D-Flash memory
as shown in
bits
Table
DPS[4:0]
0_0000
0_0001
0_0010
0_0011
0_0100
0_0101
0_0110
0_0111
0_1000
0_1001
0_1010
0_1011
0_1100
0_1101
0_1110
0_1111
1_0000
1_0001
1_0010
1_0011
1_0100
1_0101
19-23.
Table 19-23. D-Flash Protection Address Range
Table 19-22. DFPROT Field Descriptions
S12XS Family Reference Manual, Rev. 1.10
0x10_0000 – 0x10_0AFF
0x10_0000 – 0x10_0BFF
0x10_0000 – 0x10_0CFF
0x10_0000 – 0x10_0DFF
0x10_0000 – 0x10_0EFF
0x10_0000 – 0x10_00FF
0x10_0000 – 0x10_01FF
0x10_0000 – 0x10_02FF
0x10_0000 – 0x10_03FF
0x10_0000 – 0x10_04FF
0x10_0000 – 0x10_05FF
0x10_0000 – 0x10_06FF
0x10_0000 – 0x10_07FF
0x10_0000 – 0x10_08FF
0x10_0000 – 0x10_09FF
0x10_0000 – 0x10_0FFF
0x10_0000 – 0x10_10FF
0x10_0000 – 0x10_11FF
0x10_0000 – 0x10_12FF
0x10_0000 – 0x10_13FF
0x10_0000 – 0x10_14FF
0x10_0000 – 0x10_15FF
Global Address Range
Description
Protected Size
1024 bytes
1280 bytes
1536 bytes
1792 bytes
2048 bytes
2304 bytes
2560 bytes
2816 bytes
3072 bytes
3328 bytes
3584 bytes
3840 bytes
4096 bytes
4352 bytes
4608 bytes
4864 bytes
5120 bytes
5376 bytes
5632 bytes
128 KByte Flash Module (S12XFTMR128K1V1)
256 bytes
512 bytes
768 bytes
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