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參數(shù)資料
| 型號： | TS80C51RA2-MIE |
| 廠商： | International Rectifier |
| 英文描述： | High Performance 8-bit Microcontroller |
| 中文描述： | 高性能8位微控制器 |
| 文件頁數(shù)： | 41/85頁 |
| 文件大?。?/td> | 762K |
| 代理商： | TS80C51RA2-MIE |
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41
4188E–8051–08/06
AT/TS8xC51Rx2
Table 6-16.
Priority Level Bit Values
A low-priority interrupt can be interrupted by a high priority interrupt, but not by another low-prior-
ity interrupt. A high-priority interrupt can’t be interrupted by any other interrupt source.
If two interrupt requests of different priority levels are received simultaneously, the request of
higher priority level is serviced. If interrupt requests of the same priority level are received simul-
taneously, an internal polling sequence determines which request is serviced. Thus within each
priority level there is a second priority structure determined by the polling sequence.
Table 6-17.
IE Register
IE - Interrupt Enable Register (A8h)
Reset Value = 0000 0000b
Bit addressable
IPH.x
IP.x
Interrupt Level Priority
0
0
0 (Lowest)
0
1
1
1
0
2
1
1
3 (Highest)
7
6
5
4
3
2
1
0
EA
EC
ET2
ES
ET1
EX1
ET0
EX0
Bit Number
Bit Mnemonic Description
7
EA
Enable All interrupt bit
Clear to disable all interrupts.
Set to enable all interrupts.
If EA=1, each interrupt source is individually enabled or disabled by setting or
clearing its own interrupt enable bit.
6
EC
PCA interrupt enable bit
Clear to disable . Set to enable.
5
ET2
Timer 2 overflow interrupt Enable bit
Clear to disable timer 2 overflow interrupt.
Set to enable timer 2 overflow interrupt.
4
ES
Serial port Enable bit
Clear to disable serial port interrupt.
Set to enable serial port interrupt.
3
ET1
Timer 1 overflow interrupt Enable bit
Clear to disable timer 1 overflow interrupt.
Set to enable timer 1 overflow interrupt.
2
EX1
External interrupt 1 Enable bit
Clear to disable external interrupt 1.
Set to enable external interrupt 1.
1
ET0
Timer 0 overflow interrupt Enable bit
Clear to disable timer 0 overflow interrupt.
Set to enable timer 0 overflow interrupt.
0
EX0
External interrupt 0 Enable bit
Clear to disable external interrupt 0.
Set to enable external interrupt 0.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TS80C51RA2-VCB | High Performance 8-bit Microcontroller |
| TS80C51RA2-VCE | High Performance 8-bit Microcontroller |
| TS80C51RA2-VIB | High Performance 8-bit Microcontroller |
| TS80C51RA2-VIE | High Performance 8-bit Microcontroller |
| TS80C51RD2-LCA | High Performance 8-bit Microcontroller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TS80C51RA2-MIEB | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:High Performance 8-bit Microcontrollers |
| TS80C51RA2-MIED | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:High Performance 8-bit Microcontrollers |
| TS80C51RA2-MIER | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:High Performance 8-bit Microcontrollers |
| TS80C51RA2-MIJB | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:High Performance 8-bit Microcontrollers |
| TS80C51RA2-MIJD | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:High Performance 8-bit Microcontrollers |
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