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AT89C51ED2-RDTIM Datasheet(PDF) 78 Page - ATMEL Corporation

Part # AT89C51ED2-RDTIM
Description  8-bit Flash Microcontroller
PDF  137 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT89C51ED2-RDTIM Datasheet(HTML) 78 Page - ATMEL Corporation

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78
AT89C51RD2/ED2
4235E–8051–04/04
Table 55. IPH0 Register
IPH0 - Interrupt Priority High Register (B7h)
Reset Value = X000 0000b
Not bit addressable
76
54
32
1
0
-
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 high bit.
PPCH
PPCL
Priority Level
00
Lowest
01
10
1
1
Highest
5PT2H
Timer 2 overflow interrupt Priority High bit
PT2H
PT2L
Priority Level
00
Lowest
01
10
1
1
Highest
4
PSH
Serial port Priority High bit
PSH
PSL
Priority Level
0
0
Lowest
0
1
1
0
1
1
Highest
3PT1H
Timer 1 overflow interrupt Priority High bit
PT1H
PT1L
Priority Level
00
Lowest
01
10
1
1
Highest
2
PX1H
External interrupt 1 Priority High bit
PX1H
PX1L
Priority Level
00
Lowest
01
10
1
1
Highest
1PT0H
Timer 0 overflow interrupt Priority High bit
PT0H
PT0L
Priority Level
00
Lowest
0
1
10
1
1
Highest
0
PX0H
External interrupt 0 Priority High bit
PX0H
PX0L
Priority Level
0
0
Lowest
01
10
1
1
Highest



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