mc9s12vr48 Freescale Semiconductor, Inc, mc9s12vr48 Datasheet - Page 474

• Manufacturer Part Number: mc9s12vr48
• Description: S12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

64 KByte Flash Module (S12FTMRG64K512V1)
474
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 0x3_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 0x3_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 17-18. P-Flash Protection Higher Address Range
00
01
10
11
FPHDIS
Table 17-17. P-Flash Protection Function
MC9S12VR Family Reference Manual,
Preliminary - Subject to Change Without Notice
Table 17-16. FPROT Field Descriptions
1
1
0
0
1
1
0
0
inTable
Table 17-17
Table
Global Address Range
0x3_F800–0x3_FFFF
0x3_F000–0x3_FFFF
0x3_E000–0x3_FFFF
0x3_C000–0x3_FFFF
Table 17-18
FPLDIS
17-18. The FPHS bits can only be written to while the FPHDIS bit is set.
17-19. 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
17-19.
Function
Rev. 2.2
Protected Size
16 Kbytes
2 Kbytes
4 Kbytes
8 Kbytes
1
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