Datasheet

83
4337K–USB–04/08
AT89C5130A/31A-M
Reset Value = X000 0000b
Not bit addressable
Table 16-5. IEN1 Register
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 high bit.
PPCH PPCL Priority Level
0 0 Lowest
0 1
1 0
1 1 Highest
5 PT2H
Timer 2 overflow interrupt Priority High bit
PT2H PT2L Priority Level
0 0 Lowest
0 1
1 0
1 1 Highest
4 PSH
Serial port Priority High bit
PSH PSL Priority Level
0 0 Lowest
0 1
1 0
1 1 Highest
3 PT1H
Timer 1 overflow interrupt Priority High bit
PT1H PT1L Priority Level
0 0 Lowest
0 1
1 0
1 1 Highest
2 PX1H
External interrupt 1 Priority High bit
PX1H PX1L Priority Level
0 0 Lowest
0 1
1 0
1 1 Highest
1 PT0H
Timer 0 overflow interrupt Priority High bit
PT0H PT0L Priority Level
0 0 Lowest
0 1
1 0
1 1 Highest
0 PX0H
External interrupt 0 Priority High bit
PX0H PX0L Priority Level
0 0 Lowest
0 1
1 0
1 1 Highest