LM3S308 Luminary Micro, Inc, LM3S308 Datasheet - Page 125

• Manufacturer Part Number: LM3S308
• Description: Lm3s308 Arm Microcontroller
• Manufacturer: Luminary Micro, Inc

Reset
Reset
Type
Type
Flash Memory Protection Program Enable (FMPPE)
Base 0x400F.E000
Offset 0x134
Type R/W, reset 0x0000.00FF
June 04, 2008
Bit/Field
31:0
R/W
R/W
31
15
0
0
R/W
R/W
Register 9: Flash Memory Protection Program Enable (FMPPE), offset 0x134
Note:
This register stores the execute-only protection bits for each 2-KB flash block (see the FMPRE
registers for the read-only protection bits). This register is loaded during the power-on reset sequence.
The factory settings are a value of 1 for all implemented banks. This implements a policy of open
access and programmability. The register bits may be changed by writing the specific register bit.
However, this register is R/W0; the user can only change the protection bit from a 1 to a 0 (and may
NOT change a 0 to a 1). The changes are not permanent until the register is committed (saved), at
which point the bit change is permanent. If a bit is changed from a 1 to a 0 and not committed, it
may be restored by executing a power-on reset sequence. For additional information, see the “Flash
Memory Protection” section.
30
14
0
0
PROG_ENABLE
R/W
R/W
29
13
0
0
Name
Offset is relative to System Control base address of 0x400FE000.
R/W
R/W
28
12
0
0
R/W
R/W
27
11
0
0
Type
R/W
R/W
R/W
26
10
0
0
0x000000FF
R/W
R/W
Reset
25
0
9
0
Preliminary
PROG_ENABLE
PROG_ENABLE
R/W
R/W
24
0
8
0
Description
Flash Programming Enable
Each bit position maps 2 Kbytes of Flash to be write-enabled.
Value
0x000000FF
R/W
R/W
23
0
7
1
R/W
R/W
22
0
6
1
Description
Enables 16 KB of flash.
R/W
R/W
21
0
5
1
R/W
R/W
20
0
4
1
R/W
R/W
19
0
3
1
LM3S308 Microcontroller
R/W
R/W
18
0
2
1
R/W
R/W
17
0
1
1
R/W
R/W
16
0
0
1
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