参数资料
型号: TS80C51RD2-EER
厂商: ATMEL CORP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MICROCONTROLLER, PQFP44
封装: 1.40 MM HEIGHT, VQFP-44
文件页数: 38/74页
文件大小: 689K
代理商: TS80C51RD2-EER
Rev. C - 06 March, 2001
43
TS80C51RA2/RD2
TS83C51RB2/RC2/RD2
TS87C51RB2/RC2/RD2
Table 21. IPH Register
IPH - 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 bit high.
PPCH
PPC
Priority Level
0
Lowest
01
10
1
Highest
5
PT2H
Timer 2 overow interrupt Priority High bit
PT2H
PT2
Priority Level
0
Lowest
01
10
1
Highest
4
PSH
Serial port Priority High bit
PSH
PS
Priority Level
0
Lowest
01
10
1
Highest
3
PT1H
Timer 1 overow interrupt Priority High bit
PT1H
PT1
Priority Level
0
Lowest
01
10
1
Highest
2
PX1H
External interrupt 1 Priority High bit
PX1H
PX1
Priority Level
0
Lowest
01
10
1
Highest
1
PT0H
Timer 0 overow interrupt Priority High bit
PT0H
PT0
Priority Level
0
Lowest
01
10
1
Highest
0
PX0H
External interrupt 0 Priority High bit
PX0H
PX0
Priority Level
0
Lowest
01
10
1
Highest
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