AT89C5115
Table 70. IPH0 Register
IPH0 (B7h)
Interrupt High Priority Register
7
-
6
5
4
3
2
1
0
PPCH
PT2H
PSH
PT1H
PX1H
PT0H
PX0H
Bit
Bit
Number
Mnemonic Description
Reserved
7
-
The value read from this bit is indeterminate. Do not set this bit.
PCA Interrupt Priority Level Most Significant bit
PPCH PPC Priority level
0
0
1
1
0
1
0
1
Lowest
6
PPCH
PT2H
PSH
Highest priority
Timer 2 Overflow Interrupt High Priority bit
PT2H PT2 Priority Level
0
0
1
1
0
1
0
1
Lowest
5
4
3
2
1
0
Highest
Serial Port High Priority bit
PSH PS Priority Level
0
0
1
1
0
1
0
1
Lowest
Highest
Timer 1 Overflow Interrupt High Priority bit
PT1H PT1 Priority Level
0
0
1
1
0
1
0
1
Lowest
PT1H
PX1H
PT0H
PX0H
Highest
External Interrupt 1 High Priority bit
PX1H PX1 Priority Level
0
0
1
1
0
1
0
1
Lowest
Highest
Timer 0 Overflow Interrupt High Priority bit
PT0H PT0 Priority Level
0
0
1
1
0
1
0
1
Lowest
Highest
External Interrupt 0 High Priority bit
PX0H PX0 Priority Level
0
0
1
1
0
1
0
1
Lowest
Highest
Reset Value = X000 0000b
95
4128F–8051–05/06
ATMEL [ ATMEL ]
