参数资料
型号: IA88C00-PLC68C
厂商: Innovasic Semiconductor
英文描述: Microcontroller
中文描述: 微控制器
文件页数: 21/80页
文件大小: 707K
代理商: IA88C00-PLC68C
IA88C00
Microcontroller
Data Sheet
As of Production Version -01
Copyright
2005 ENG 21 0 050519-00 www.Innovasic
Innovasic.com
Innovasic Semiconductor
Page 21 of 80 1.888.824.4184
Figure 11. R214 (D6) RP0 Register Pointer 0
Bit
7
6
5
4
3
2
Not
Used
-
-
1
Not
Used
-
-
0
Not
Used
-
-
RP7
RP6
RP5
RP4
RP3
Initial Value
Read/Write
1
1
0
0
0
R/W
R/W
R/W
R/W
R/W
Register Pointer 0 (RP0) defines a moveable, 8-register section of the register space. The registers within
these spaces are called working registers. RP0 is used in addressing modes where the register operand is
expressed as a 4-bit address.
At reset, RP0 points to R192.
Figure 12. R215 (O7) RP1 Register Pointer 1
Bit
7
6
5
4
3
2
Not
Used
R/W
1
Not
Used
R/W
0
Not
Used
R/W
RP7
RP6
RP5
RP4
RP3
Initial Value
Read/Write
R/W
R/W
R/W
R/W
R/W
Register Pointer 1 (RP1) defines a moveable, 8-register section of the register space. The registers within
these spaces are called working registers. RP1 is used in addressing modes where the register operand is
expressed as a 4-bit address.
At reset, RP0 points to R200.
Figure 13. R216 (D8) SPH Stack Pointer
Bit
7
6
5
4
3
2
1
SP9
R/W
0
SP8
R/W
SP15
R/W
SP14
R/W
SP13
R/W
SP12
R/W
SP11
R/W
SP10
R/W
Initial Value
Read/Write
Stack operations are supported in the register file or in data memory. Bit 1 in the external Memory Timing
register (R254B0) selects between the two.
Register pair R216-R217 forms the Stack Pointer used for all stack operations. R216 is the MSB and
R217 is the LSB.
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