AT89C5122 ATMEL [ATMEL Corporation], AT89C5122 Datasheet - Page 165
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AT89C5122
Manufacturer Part Number
AT89C5122
Description
MICROCONTROLLER WITH USB AND SMART CARD READER INTERFACES
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT89C5122.pdf
(213 pages)
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4202D–SCR–06/05
Table 102. Interrupt Priority High Register 0 - IPH0 (B7h)
Reset Value = X000 0000b (Not bit addressable)
Number
7 - 5
Bit
7
-
4
3
2
1
0
Mnemonic
PX1H
PX0H
PT1H
PT0H
PSH
Bit
6
-
-
Description
Reserved
The value read from this bit is indeterminate. Do not change these bits.
Serial port Priority High bit
Timer 1 overflow interrupt Priority High bit
External interrupt 1 Priority High bit
Timer 0 overflow interrupt Priority High bit
External interrupt 0 Priority High bit
PX1H
PX0H
PT1H
PT0H
PSH
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
5
-
PX0L
PT1L
PX1L
PT0L
PSL
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
PSH
4
Priority Level
Lowest
Priority Level
Lowest
Highest
Priority Level
Lowest
Highest
Priority Level
Lowest
Highest
Priority Level
Lowest
Highest
Highest
PT1H
3
PX1H
2
PT0H
1
PX0H
0
165
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