參數(shù)資料
型號: TS80C51RA2-MCJB
廠商: Atmel Corp.
英文描述: High Performance 8-bit Microcontrollers
中文描述: 高性能8位微控制器
文件頁數(shù): 43/74頁
文件大?。?/td> 903K
代理商: TS80C51RA2-MCJB
Rev. C - 06 March, 2001
43
TS80C51RA2/RD2
TS83C51RB2/RC2/RD2
TS87C51RB2/RC2/RD2
Table 21. IPH Register
IPH - Interrupt Priority High Register (B7h)
7
6
Reset Value = X000 0000b
Not bit addressable
5
4
3
2
1
0
-
PPCH
PT2H
PSH
PT1H
PX1H
PT0H
PX0H
Bit
Number
Bit
Mnemonic
Description
7
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
6
PPCH
PCA interrupt priority bit high.
PPCH
0
0
1
1
PPC
0
1
0
1
Priority Level
Lowest
Highest
5
PT2H
Timer 2 overflow interrupt Priority High bit
PT2H
0
0
1
1
PT2
0
1
0
1
Priority Level
Lowest
Highest
4
PSH
Serial port Priority High bit
PSH
0
0
1
1
PS
0
1
0
1
Priority Level
Lowest
Highest
3
PT1H
Timer 1 overflow interrupt Priority High bit
PT1H
0
0
1
1
PT1
0
1
0
1
Priority Level
Lowest
Highest
2
PX1H
External interrupt 1 Priority High bit
PX1H
0
0
1
1
PX1
0
1
0
1
Priority Level
Lowest
Highest
1
PT0H
Timer 0 overflow interrupt Priority High bit
PT0H
0
0
1
1
PT0
0
1
0
1
Priority Level
Lowest
Highest
0
PX0H
External interrupt 0 Priority High bit
PX0H
0
0
1
1
PX0
0
1
0
1
Priority Level
Lowest
Highest
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