LM3S308 Datasheet, PDF (50/537 Pages) Texas Instruments – ARM and Thumb are registered trademarks and Cortex is a trademark

The Cortex-M3 Processor
Register 16: Program Counter (PC)
The Program Counter (PC) is register R15, and it contains the current program address. On reset,
the processor loads the PC with the value of the reset vector, which is at address 0x0000.0004. Bit
0 of the reset vector is loaded into the THUMB bit of the EPSR at reset and must be 1. The PC register
can be accessed in either privileged or unprivileged mode.
Program Counter (PC)
Type R/W, reset -
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
PC
Type R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
PC
Type R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Bit/Field
31:0
Name
PC
Type
R/W
Reset
-
Description
This field is the current program address.
50
June 18, 2012
Texas Instruments-Production Data