TS87C51RD2 ATMEL Corporation, TS87C51RD2 Datasheet - Page 42

• Manufacturer Part Number: TS87C51RD2
• Description: (TS8xC51Rx2) High Performance 8-bit Microcontroller
• Manufacturer: ATMEL Corporation

42
AT/TS8xC51Rx2
Table 6-18.
Reset Value = X000 0000b
Bit addressable
Bit Number
7
7
6
5
4
3
2
1
0
-
Bit Mnemonic
IP Register
IP - Interrupt Priority Register (B8h)
PPC
6
PPC
PX1
PX0
PT2
PT1
PT0
PS
-
PT2
5
Description
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 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.
PS
4
PT1
3
PX1
2
PT0
1
4188E–8051–08/06
PX0
0