參數(shù)資料
型號(hào): AT_8032
廠商: Atmel Corp.
英文描述: 8-bit Embedded Microcontroller Core(8位嵌入式基于工業(yè)標(biāo)準(zhǔn)軟件兼容的微控制器)
中文描述: 8位嵌入式微控制器核心(8位嵌入式基于工業(yè)標(biāo)準(zhǔn)軟件兼容的微控制器)
文件頁數(shù): 31/39頁
文件大?。?/td> 532K
代理商: AT_8032
AT_8032 Core
31
PSW: Program Status Word (PSW)
The Program Status Word is bit addressable.
Table 11.
Program Status Word
MSB
LSB
CY
AC
F0
RS1
RS0
OV
-
P
Table 12.
Program Status Word Bit Functions
Symbol
Position
Function
CY
PSW.7
Carry Flag
AC
PSW.6
Auxiliary Carry Flag (for BCD operations)
F0
PSW.5
Flag 0 (Available to the user as a general purpose flag)
RS1
PSW.4
Register Bank Select control bits 1 and 0. Set/cleared by software to determine working register
bank. See Table 13.
RS0
PSW.3
OV
PSW.2
Overflow Flag
-
PSW.1
User-definable Flag
P
PSW.0
Parity Flag. Set/cleared by hardware during each instruction cycle to indicate an odd/even
number of 1 bits in the Accumulator.
Table 13.
Register Bank Selection by RS0 and RS1
RS1
RS0
Register Bank
Address
0
0
0
00H - 07H
0
1
1
08H - 0FH
1
0
2
10H - 17H
1
1
3
18H - 1FH
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