AT80C51RA2-3CSCV View Datasheet(PDF) - Atmel Corporation
Part Name
Description
MFG CO.
'AT80C51RA2-3CSCV' PDF : 86 Pages View PDF
Table 6-18. IP Register
IP - Interrupt Priority Register (B8h)
7
6
5
4
3
2
1
0
-
PPC
PT2
PS
PT1
PX1
PT0
PX0
Bit Number Bit Mnemonic Description
7
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
6
PPC
PCA interrupt priority bit
Refer to PPCH for priority level.
5
PT2
Timer 2 overflow interrupt Priority bit
Refer to PT2H for priority level.
4
PS
Serial port Priority bit
Refer to PSH for priority level.
3
PT1
Timer 1 overflow interrupt Priority bit
Refer to PT1H for priority level.
2
PX1
External interrupt 1 Priority bit
Refer to PX1H for priority level.
1
PT0
Timer 0 overflow interrupt Priority bit
Refer to PT0H for priority level.
0
PX0
Reset Value = X000 0000b
Bit addressable
External interrupt 0 Priority bit
Refer to PX0H for priority level.
42 AT/TS8xC51Rx2
4188F–8051–01/08
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