參數(shù)資料
型號: AT83C51RB2XXX-SLSIL
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: Microcontroller
中文描述: 8-BIT, MROM, 40 MHz, MICROCONTROLLER, PQCC44
封裝: PLASTIC, LCC-44
文件頁數(shù): 49/81頁
文件大?。?/td> 1082K
代理商: AT83C51RB2XXX-SLSIL
50
AT80C51RD2/AT83C51Rx2
4113A–8051–09/02
Table 35.
IPH0 Register
IPH0 - Interrupt Priority High Register (B7h)
Reset Value = X000 0000b
Not bit addressable
7
6
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 high bit.
PPCH PPCL Priority Level
0
0
Lowest
0
1
1
0
1
1
Highest
5
PT2H
Timer 2 overflow interrupt priority high bit
PT2H
PT2L
Priority Level
0
0
Lowest
0
1
1
0
1
1
Highest
4
PSH
Serial port priority high bit
PSH
PSL
0
0
0
1
1
0
1
1
Priority Level
Lowest
Highest
3
PT1H
Timer 1 overflow interrupt priority high bit
PT1H
PT1L
Priority Level
0
0
Lowest
0
1
1
0
1
1
Highest
2
PX1H
External interrupt 1 priority high bit
PX1H
PX1L
Priority Level
0
0
Lowest
0
1
1
0
1
1
Highest
1
PT0H
Timer 0 overflow interrupt priority high bit
PT0H
PT0L
Priority Level
0
0
Lowest
0
1
1
0
1
1
Highest
0
PX0H
External interrupt 0 priority high bit
PX0H
PX0L
Priority Level
0
0
Lowest
0
1
1
0
1
1
Highest
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