TM4C123BE6PZ_15 Datasheet, PDF (73/1310 Pages) Texas Instruments – Tiva TM4C123BE6PZ Microcontroller

Tiva^™ TM4C123BE6PZ Microcontroller
Register 14: Stack Pointer (SP)
The Stack Pointer (SP) is register R13. In Thread mode, the function of this register changes
depending on the ASP bit in the Control Register (CONTROL) register. When the ASP bit is clear,
this register is the Main Stack Pointer (MSP). When the ASP bit is set, this register is the Process
Stack Pointer (PSP). On reset, the ASP bit is clear, and the processor loads the MSP with the value
from address 0x0000.0000. The MSP can only be accessed in privileged mode; the PSP can be
accessed in either privileged or unprivileged mode.
Stack Pointer (SP)
Type RW, reset -
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
SP
Type RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
Reset
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
SP
Type RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
Reset
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Bit/Field
31:0
Name
SP
Type
RW
Reset
-
Description
This field is the address of the stack pointer.
June 12, 2014
73
Texas Instruments-Production Data