at89c51re2-slsem ATMEL Corporation, at89c51re2-slsem Datasheet - Page 113

• Manufacturer Part Number: at89c51re2-slsem
• Description: At89c51re2 8-bit Flash Microcontroller
• Manufacturer: ATMEL Corporation

96
AT89C51RE2
Table 76. IPL0 Register
IPL0 - Interrupt Priority Register (B8h)
Reset Value = X000 0000b
Bit addressable
Number
Bit
7
-
7
6
5
4
3
2
1
0
Mnemonic Description
PPCL
PPCL
PT2L
PT1L
PX1L
PT0L
PX0L
PSL
Bit
6
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
PCA interrupt Priority bit
Refer to PPCH for priority level.
Timer 2 overflow interrupt Priority bit
Refer to PT2H for priority level.
Serial port 0 Priority bit
Refer to PSH for priority level.
Timer 1 overflow interrupt Priority bit
Refer to PT1H for priority level.
External interrupt 1 Priority bit
Refer to PX1H for priority level.
Timer 0 overflow interrupt Priority bit
Refer to PT0H for priority level.
External interrupt 0 Priority bit
Refer to PX0H for priority level.
PT2L
5
PSL
4
PT1L
3
PX1L
2
PT0L
1
7663B–8051–03/07
PX0L
0