參數(shù)資料
型號: PSOC
廠商: Cypress Semiconductor Corp.
英文描述: 8-Bit Programmable System-on-Chip (PSoC⑩) Microcontrollers
中文描述: 8位可編程系統(tǒng)(的PSoC⑩)微控制器片上
文件頁數(shù): 20/148頁
文件大?。?/td> 1412K
代理商: PSOC
Cypress MicroSystems CY8C25122/CY8C26233/CY8C26443/CY8C26643 Family Data Sheet
20
Document #: 38-12010 CY Rev. ** CMS Rev. 3.20
September 5, 2002
2.2
CPU Registers
2.2.1
Flags Register
The Flags Register can only be set or reset with logical instruction.
2.2.2
Accumulator Register
Table 8:
Flags Register
Bit #
POR
Read/
Write
Bit Name
7
6
5
4
3
2
1
0
0
0
0
0
0
0
1
0
--
--
--
RW
R
RW
RW
RW
Reserved
Reserved
Reserved
XIO
Super
Carry
Zero
Global IE
Bit 7
:
Reserved
Bit 6
:
Reserved
Bit 5
:
Reserved
Bit 4
:
XIO
Set by the user to select between the register banks
0 = Bank 0
1 = Bank 1
Bit 3
:
Super
Indicates whether the CPU is executing user code or Supervisor Code. (This code cannot be accessed
directly by the user and is not displayed in the ICE debugger.)
0 = User Code
1 = Supervisor Code
Bit 2
:
Carry
Set by CPU to indicate whether there has been a carry in the previous logical/arithmetic operation
0 = No Carry
1 = Carry
Bit 1
:
Zero
Set by CPU to indicate whether there has been a zero result in the previous logical/arithmetic operation
0 = Not Equal to Zero
1 = Equal to Zero
Bit 0
:
Global IE
Determines whether all interrupts are enabled or disabled
0 = Disabled
1 = Enabled
Table 9:
Accumulator Register (CPU_A)
Bit #
POR
7
0
6
0
5
0
4
0
3
0
2
0
1
0
0
0
Read/Write
System
1
Data [7]
System
1
Data [6]
System
1
Data [5]
System
1
Data [4]
System
1
Data [3]
System
1
Data [2]
System
1
Data [1]
System
1
Data [0]
Bit Name
Bit [7:0]
:
Data [7:0]
8-bit data value holds the result of any logical/arithmetic instruction that uses a source address-
ing mode
1.
System - not directly accessible by the user
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