TM4C1231H6PGE Datasheet, PDF (556/1192 Pages) Texas Instruments – Tiva™ TM4C1231H6PGE Microcontroller

Internal Memory
Register 39: User Register 0 (USER_REG0), offset 0x1E0
Register 40: User Register 1 (USER_REG1), offset 0x1E4
Register 41: User Register 2 (USER_REG2), offset 0x1E8
Register 42: User Register 3 (USER_REG3), offset 0x1EC
Note: Offset is relative to System Control base address of 0x400F.E000.
These registers each provide 32 bits of user-defined data that is non-volatile. Bits can only be
changed from 1 to 0. The reset value shown only applies to power-on reset when the register is not
yet committed; any other type of reset does not affect this register. Once committed, the register
retains its value through power-on reset. Once committed, the only way to restore the factory default
value of this register is to perform the sequence detailed in “Recovering a "Locked"
Microcontroller” on page 195.
User Register n (USER_REGn)
Base 0x400F.E000
Offset 0x1E0
Type RW, reset 0xFFFF.FFFF
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
DATA
Type RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
Reset
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
DATA
Type RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
Reset
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Bit/Field
31:0
Name
DATA
Type
Reset Description
RW 0xFFFF.FFFF User Data
Contains the user data value. This field is initialized to all 1s and once
committed, retains its value through power-on reset.
556
June 12, 2014
Texas Instruments-Production Data