參數(shù)資料
型號(hào): 935225410112
廠商: NXP SEMICONDUCTORS
元件分類: 微控制器/微處理器
英文描述: 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PDIP40
封裝: 0.600 INCH, PLASTIC, DIP-40
文件頁數(shù): 10/67頁
文件大?。?/td> 400K
代理商: 935225410112
1998 Apr 07
18
Philips Semiconductors
Product specication
8-bit Flash microcontrollers
P89C738; P89C739
9.1
Interrupt Enable Register (IE)
Table 5
Interrupt Enable Register (SFR address A8H)
Table 6
Description of IE bits
9.2
Interrupt Priority Register (IP)
Table 7
Interrupt Priority Register (SFR address B8H)
Table 8
Description of IP bits
76543210
EA
ET2
ES
ET1
EX1
ET0
EX0
BIT
SYMBOL
DESCRIPTION
7EA
General enable/disable control. If EA = 0, no interrupt is enabled. If EA = 1, any
individually enabled interrupt will be accepted.
6
reserved
5
ET2
enable Timer 2 interrupt
4
ES
enable Serial Port interrupt
3
ET1
enable Timer 1 interrupt
2
EX1
enable external interrupt 1
1
ET0
enable Timer 0 interrupt
0
EX0
enable external interrupt 0
76543210
PT2
PS
PT1
PX1
PT0
PX0
BIT
SYMBOL
DESCRIPTION
7
reserved
6
reserved
5
PT2
Timer 2 interrupt priority level
4
PS
Serial Port interrupt priority level
3
PT1
Timer 1 interrupt priority level
2
PX1
external interrupt 1 priority level
1
PT0
Timer 0 interrupt priority level
0
PX0
external interrupt 0 priority level
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