C8051F850-C-GM Datasheet, PDF (131/328 Pages) Silicon Laboratories – Low-Cost 8-bit MCU Family with up to 8 kB of Flash

Register 15.3. SP: Stack Pointer
Bit
7
Name
Type
Reset
0
SFR Address: 0x81
Bit
Name
7:0
SP
6
5
4
3
2
1
0
SP
RW
0
0
0
0
1
1
1
Table 15.4. SP Register Bit Descriptions
Function
Stack Pointer.
The Stack Pointer holds the location of the top of the stack. The stack pointer is incre-
mented before every PUSH operation. The SP register defaults to 0x07 after reset.
Rev. 1.0
114