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AT80C51RA2-RLSIV Datasheet(PDF) 43 Page - International Rectifier

Part # AT80C51RA2-RLSIV
Description  High Performance 8-bit Microcontroller
PDF  85 Pages
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Manufacturer  IRF [International Rectifier]
Direct Link  http://www.irf.com
Logo IRF - International Rectifier

AT80C51RA2-RLSIV Datasheet(HTML) 43 Page - International Rectifier

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43
4188E–8051–08/06
AT/TS8xC51Rx2
Table 6-19.
IPH Register
IPH - Interrupt Priority High Register (B7h)
Reset Value = X000 0000b
Not bit addressable
76
543
210
-
PPCH
PT2H
PSH
PT1H
PX1H
PT0H
PX0H
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 bit high.
PPCH
PPC
Priority Level
00
Lowest
01
10
1
1
Highest
5PT2H
Timer 2 overflow interrupt Priority High bit
PT2H
PT2
Priority Level
00
Lowest
01
10
1
1
Highest
4
PSH
Serial port Priority High bit
PSH
PS
Priority Level
00
Lowest
01
10
1
1
Highest
3PT1H
Timer 1 overflow interrupt Priority High bit
PT1H
PT1
Priority Level
00
Lowest
01
10
1
1
Highest
2
PX1H
External interrupt 1 Priority High bit
PX1H
PX1
Priority Level
00
Lowest
01
10
1
1
Highest
1PT0H
Timer 0 overflow interrupt Priority High bit
PT0H
PT0
Priority Level
00
Lowest
01
10
1
1
Highest
0
PX0H
External interrupt 0 Priority High bit
PX0H
PX0
Priority Level
00
Lowest
01
10
1
1
Highest



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