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AT89C51RB2-3CSIM Datasheet(PDF) 59 Page - ATMEL Corporation

Part # AT89C51RB2-3CSIM
Description  Microcontroller with 16K/32K Bytes Flash
PDF  127 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT89C51RB2-3CSIM Datasheet(HTML) 59 Page - ATMEL Corporation

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AT89C51RB2/RC2
4180C–8051–12/03
Table 46. 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
PPCHPPCL
Priority Level
00
Lowest
01
10
1
1
Highest
5PT2H
Timer 2 Overflow Interrupt Priority High Bit
PT2HPT2L
Priority Level
00
Lowest
01
10
1
1
Highest
4
PSH
Serial Port Priority High Bit
PSH PSL
Priority Level
00
Lowest
01
10
1
1
Highest
3PT1H
Timer 1 Overflow Interrupt Priority High Bit
PT1HPT1L
Priority Level
00
Lowest
01
10
1
1
Highest
2
PX1H
External Interrupt 1 Priority High Bit
PX1HPX1L
Priority Level
00
Lowest
01
10
1
1
Highest
1PT0H
Timer 0 Overflow Interrupt Priority High Bit
PT0HPT0L
Priority Level
00
Lowest
01
10
1
1
Highest
0
PX0H
External Interrupt 0 Priority High Bit
PX0H PX0L
Priority Level
00
Lowest
01
10
1
1
Highest



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