w78l812a Winbond Electronics Corp America, w78l812a Datasheet - Page 10

• Manufacturer Part Number: w78l812a
• Description: 8-bit Mcu Series 80c51-based
• Manufacturer: Winbond Electronics Corp America

5.5.3
IP.7: Unused.
IP.6: Unused.
PT2: This bit defines the Timer 2 interrupt priority.
PS: This bit defines the Serial port 0 interrupt priority. PS = 1 sets it to higher priority level.
PT1: This bit defines the Timer 1 interrupt priority.
PX1: This bit defines the External interrupt 1 priority. PX1 = 1 sets it to higher priority level.
PT0: This bit defines the Timer 0 interrupt priority.
PX0: This bit defines the External interrupt 0 priority. PX0 = 1 sets it to higher priority level.
5.5.4
PX9: This bit defines the External interrupt 9 priority. PX9 = 1 sets it to higher priority level.
PX8: This bit defines the External interrupt 8 priority. PX8 = 1 sets it to higher priority level.
PX7: This bit defines the External interrupt 7 priority. PX7 = 1 sets it to higher priority level.
PX6: This bit defines the External interrupt 6 priority. PX6 = 1 sets it to higher priority level.
PX5: This bit defines the External interrupt 5 priority. PX5 = 1 sets it to higher priority level.
PX4: This bit defines the External interrupt 4 priority. PX4 = 1 sets it to higher priority level.
PX3: This bit defines the External interrupt 3 priority. PX3 = 1 sets it to higher priority level.
PX2: This bit defines the External interrupt 2 priority. PX2 = 1 sets it to higher priority level.
5.5.5
IL9: External interrupt 9 polarity level.
IL8: External interrupt 8 polarity level.
IL7: External interrupt 7 polarity level.
IL6: External interrupt 6 polarity level.
IL5: External interrupt 5 polarity level.
IL4: External interrupt 4 polarity level.
IL3: External interrupt 3 polarity level.
IL2: External interrupt 2 polarity level.
Note: 0 = active LOW, 1 = active HIGH.
Interrupt Priority Register 0
Interrupt Priority Register 1
Interrupt Polarity Register
Bit:
Bit:
Bit:
PX9
IL9
7
7
7
-
PX8
IL8
Mnemonic: IX
Mnemonic: IP0
Mnemonic: IP1
6
6
6
-
PX7
PT2
IL7
5
5
5
- 10 -
PX6
IL6
PS
4
4
4
PT1 = 1 sets it to higher priority level.
PT0 = 1 sets it to higher priority level.
PT2 = 1 sets it to higher priority level.
Address: E9H
Address: B8h
Address: F8h
PT1
PX5
IL5
3
3
3
W78LE812/W78L812A
PX1
PX4
IL4
2
2
2
PT0
PX3
IL3
1
1
1
PX0
PX2
IL2
0
0
0