AT89C51ID2-SLSIM Atmel, AT89C51ID2-SLSIM Datasheet - Page 67
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AT89C51ID2-SLSIM
Manufacturer Part Number
AT89C51ID2-SLSIM
Description
C51ID2 64KF TWI 32KHZ PLCC44 3-5.5V IND.
Manufacturer
Atmel
Datasheet
1.AT89C51ID2-SLSIM.pdf
(157 pages)
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4289C–8051–11/05
Table 51. IPH0 Register
IPH0 - Interrupt Priority High Register (B7h)
Reset Value = X000 0000b
Not bit addressable
Number
Bit
7
7
6
5
4
3
2
1
0
-
Mnemonic Description
PPCH
PPCH
PX1H
PX0H
PT2H
PT1H
PT0H
PSH
Bit
6
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
PCA interrupt Priority high bit.
PPCHPPCLPriority Level
0
0
1
1
Timer 2 overflow interrupt Priority High bit
PT2HPT2LPriority Level
0
0
1
1
Serial port Priority High bit
PSH PSLPriority Level
0
0
1
1
Timer 1 overflow interrupt Priority High bit
PT1HPT1L Priority Level
0
0
1
1
External interrupt 1 Priority High bit
PX1HPX1LPriority Level
0
0
1
1
Timer 0 overflow interrupt Priority High bit
PT0HPT0LPriority Level
0
0
1
1
External interrupt 0 Priority High bit
PX0H PX0LPriority Level
0
0
1
1
PT2H
0Lowest
1
0
1Highest
0Lowest
1
0
1Highest
0Lowest
1
0
1Highest
0 Lowest
1
0
1 Highest
0Lowest
1
0
1Highest
0Lowest
1
0
1Highest
0Lowest
1
0
1Highest
5
PSH
4
PT1H
3
PX1H
2
AT89C51ID2
PT0H
1
PX0H
0
67
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