參數(shù)資料
型號: T89C51SND1-ROTIL
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: Single Chip Microcontroller with MP3 Decoder and Man Machine Interface
中文描述: 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQFP80
封裝: TQFP-80
文件頁數(shù): 146/170頁
文件大?。?/td> 1927K
代理商: T89C51SND1-ROTIL
146
A/T89C51CC01
4129L–CAN–08/05
Table 119.
IPH0 Register
IPH0 (B7h)
Interrupt High Priority Register
Reset Value = X000 0000b
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 Level Most Significant bit
PPCH PPC
Priority level
0
0
Lowest
0
1
1
0
1
1
Highest priority
5
PT2H
Timer 2 Overflow Interrupt High Priority bit
PT2H PT2
Priority Level
0
0
Lowest
0
1
1
0
1
1
Highest
4
PSH
Serial Port High Priority bit
PSH
PS
0
0
0
1
1
0
1
1
Priority Level
Lowest
Highest
3
PT1H
Timer 1 Overflow Interrupt High Priority bit
PT1H PT1
Priority Level
0
0
Lowest
0
1
1
0
1
1
Highest
2
PX1H
External Interrupt 1 High Priority bit
PX1H PX1
Priority Level
0
0
Lowest
0
1
1
0
1
1
Highest
1
PT0H
Timer 0 Overflow Interrupt High Priority bit
PT0H PT0
Priority Level
0
0
Lowest
0
1
1
0
1
1
Highest
0
PX0H
External Interrupt 0 high priority bit
PX0H PX0
Priority Level
0
0
Lowest
0
1
1
0
1
1
Highest
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