Abov MC97F60128 - SFR Map

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MC97F60128
ABOV Semiconductor Co., Ltd.
8.4.3 SFR Map
ACC (Accumulator Register) : E0H
7
6
5
4
3
2
1
0
ACC
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial value : 00H
ACC
Accumulator
B (B Register) : F0H
7
6
5
4
3
2
1
0
B
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial value : 00H
B
B Register
SP (Stack Pointer) : 81H
7
6
5
4
3
2
1
0
SP
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial value : 07H
SP
Stack Pointer
XSP (Extended Stack Pointer) : 91H
7
6
5
4
3
2
1
0
XSP
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial value : 07H
XSP
Extended Stack Pointer
The XSP is a high of stack pointer when XSPEN bit of the
XSPCR register is set. In this case Stack is located in
XDATA memory and the maximal size of stack is equal to
64k-bytes. If the XSPEN bit is set to ‘0’, the XSP register is
ignored.
XSPCR (Extended Stack Pointer Control Register) : F6H
7
6
5
4
3
2
1
0
–
–
–
–
–
–
–
XSPEN
–
–
–
–
–
–
–
R/W
Initial value : 00H
XSPEN
Extended Stack Pointer Enable/Disable
0
Disable
1
Enable