Datasheet

82
4337K–USB–04/08
AT89C5130A/31A-M
Reset Value = X000 0000b
Bit addressable
Table 16-4. IPH0 Register
IPH0 - Interrupt Priority High Register (B7h)
Bit
Number
Bit
Mnemonic Description
7 -
Reserved
The value read from this bit is indeterminate. Do not set this bit.
6 PPCL
PCA interrupt Priority bit
Refer to PPCH for priority level.
5 PT2L
Timer 2 overflow interrupt Priority bit
Refer to PT2H for priority level.
4 PSL
Serial port Priority bit
Refer to PSH for priority level.
3 PT1L
Timer 1 overflow interrupt Priority bit
Refer to PT1H for priority level.
2 PX1L
External interrupt 1 Priority bit
Refer to PX1H for priority level.
1 PT0L
Timer 0 overflow interrupt Priority bit
Refer to PT0H for priority level.
0 PX0L
External interrupt 0 Priority bit
Refer to PX0H for priority level.
7 6 5 4 3 2 1 0
- PPCH PT2H PSH PT1H PX1H PT0H PX0H