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AT89C51RB2/RC2
4180E–8051–10/06
Table 45. IPL0 Register
IPL0 - Interrupt Priority Register (B8h)
Reset Value = X000 0000b
Bit addressable
76
54
32
1
0
-
PPCL
PT2L
PSL
PT1L
PX1L
PT0L
PX0L
Bit
Number
Bit
Mnemonic
Description
7-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
6
PPCL
PCA Interrupt Priority Bit
see PPCH for priority level.
5PT2L
Timer 2 Overflow Interrupt Priority Bit
see PT2H for priority level.
4
PSL
Serial Port Priority Bit
see PSH for priority level.
3PT1L
Timer 1 Overflow Interrupt Priority Bit
see PT1H for priority level.
2PX1L
External Interrupt 1 Priority Bit
see PX1H for priority level.
1PT0L
Timer 0 Overflow Interrupt Priority Bit
see PT0H for priority level.
0PX0L
External Interrupt 0 Priority Bit
see PX0H for priority level.