LM3S818 Luminary Micro, Inc, LM3S818 Datasheet - Page 185
LM3S818
Manufacturer Part Number
LM3S818
Description
Lm3s818 Arm Microcontroller
Manufacturer
Luminary Micro, Inc
Datasheet
1.LM3S818.pdf
(392 pages)
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- Current page: 185 of 392
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February 6, 2007
Reset
Type
Reset
Type
Bit/Field
31:0
Watchdog Lock (WDTLOCK)
Offset 0xC00
R/W
R/W
31
15
0
0
Register 7: Watchdog Lock (WDTLOCK), offset 0xC00
Writing 0x1ACCE551 to the WDTLOCK register enables write access to all other registers. Writing
any other value to the WDTLOCK register re-enables the locked state for register writes to all the
other registers. Reading the WDTLOCK register returns the lock status rather than the 32-bit
value written. Therefore, when write accesses are disabled, reading the WDTLOCK register
returns 0x00000001 (when locked; otherwise, the returned value is 0x00000000 (unlocked)).
R/W
R/W
30
14
0
0
WDTLock
Name
R/W
R/W
29
13
0
0
R/W
R/W
28
12
0
0
Type
R/W
R/W
R/W
27
11
0
0
R/W
R/W
26
10
0
0
0x0000
Reset
R/W
R/W
25
0
9
0
Preliminary
R/W
R/W
24
WDTLock
WDTLock
0
8
0
Description
Watchdog Lock
A write of the value 0x1ACCE551 unlocks the watchdog
registers for write access. A write of any other value
reapplies the lock, preventing any register updates.
A read of this register returns the following values:
Locked: 0x00000001
Unlocked: 0x00000000
R/W
R/W
23
0
7
0
R/W
R/W
22
0
6
0
R/W
R/W
21
0
5
0
R/W
R/W
20
0
4
0
R/W
R/W
19
0
3
0
LM3S818 Data Sheet
R/W
R/W
18
0
2
0
R/W
R/W
17
0
1
0
R/W
R/W
16
0
0
0
185
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