SC9S12XS256J1MAA FREESCALE [Freescale Semiconductor, Inc], SC9S12XS256J1MAA Datasheet - Page 573
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SC9S12XS256J1MAA
Manufacturer Part Number
SC9S12XS256J1MAA
Description
HCS12 Microcontrollers
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
Datasheet
1.SC9S12XS256J1MAA.pdf
(736 pages)
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Freescale Semiconductor
FPHS[1:0]
FPLS[1:0]
FPOPEN
FPHDIS
FPLDIS
RNV[6]
Field
4–3
1–0
7
6
5
2
Flash Protection Operation Enable — The FPOPEN bit determines the protection function for program or
erase operations as shown in
0 When FPOPEN is clear, the FPHDIS and FPLDIS bits define unprotected address ranges as specified by the
1 When FPOPEN is set, the FPHDIS and FPLDIS bits enable protection for the address range specified by the
Reserved Nonvolatile Bit — The RNV bit should remain in the erased state for future enhancements.
Flash Protection Higher Address Range Disable — The FPHDIS bit determines whether there is a
protected/unprotected area in a specific region of the P-Flash memory ending with global address 0x7F_FFFF.
0 Protection/Unprotection enabled
1 Protection/Unprotection disabled
Flash Protection Higher Address Size — The FPHS bits determine the size of the protected/unprotected area
in P-Flash memory as shown
Flash Protection Lower Address Range Disable — The FPLDIS bit determines whether there is a
protected/unprotected area in a specific region of the P-Flash memory beginning with global address
0x7F_8000.
0 Protection/Unprotection enabled
1 Protection/Unprotection disabled
Flash Protection Lower Address Size — The FPLS bits determine the size of the protected/unprotected area
in P-Flash memory as shown in
corresponding FPHS and FPLS bits
corresponding FPHS and FPLS bits
1
FPOPEN
For range sizes, refer to
FPHS[1:0]
1
1
1
1
0
0
0
0
Table 19-19. P-Flash Protection Higher Address Range
00
01
10
11
FPHDIS
Table 19-18. P-Flash Protection Function
Table 19-17. FPROT Field Descriptions
S12XS Family Reference Manual, Rev. 1.09
1
1
0
0
1
1
0
0
inTable
Table 19-18
Table
0x7F_E000–0x7F_FFFF
0x7F_C000–0x7F_FFFF
0x7F_F800–0x7F_FFFF
0x7F_F000–0x7F_FFFF
Global Address Range
Table 19-19
FPLDIS
19-19. The FPHS bits can only be written to while the FPHDIS bit is set.
19-20. The FPLS bits can only be written to while the FPLDIS bit is set.
1
0
1
0
1
0
1
0
for the P-Flash block.
and
No P-Flash Protection
Protected Low Range
Protected High Range
Protected High and Low Ranges
Full P-Flash Memory Protected
Unprotected Low Range
Unprotected High Range
Unprotected High and Low Ranges
Description
Table
19-20.
Function
128 KByte Flash Module (S12XFTMR128K1V1)
Protected Size
16 Kbytes
2 Kbytes
4 Kbytes
8 Kbytes
1
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