TM4C1294KCPDT Datasheet, PDF (586/1890 Pages) Texas Instruments – Tiva Microcontroller

Hibernation Module
Register 20: Hibernation Lock (HIBLOCK), offset 0x360
Writing 0xA335.9554 to the HIBLOCK register enables write access to the HIBRTCLD, HIBCALLD0,
HIBCALLD1 and Tamper registers. Writing any other value to the HIBLOCK register re-enables
the locked state for register writes to all the other registers. Reading the HIBLOCK register returns
the lock status rather than the 32-bit value written. Therefore, when write accesses are disabled,
reading the HIBLOCK register returns 0x0000.0001 when locked; otherwise, the returned value is
0x0000.0000 (unlocked).
Hibernation Lock (HIBLOCK)
Base 0x400F.C000
Offset 0x360
Type RW, reset 0x0000.0000
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
HIBLOCK
Type RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
HIBLOCK
Type RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit/Field
31:0
Name
HIBLOCK
Type
RW
Reset
0x0000
Description
HIbernate Lock
A write of 0xA335.9554 unlocks the HIBRCTL and Tamper registers.
586
June 18, 2014
Texas Instruments-Production Data