W78LE812/W78L812A

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5.5.3

Interrupt Priority Register 0

Bit:

7

6

5

4

3

2

1

0

-

-

PT2

PS

PT1

PX1

PT0

PX0

Mnemonic: IP0

Address: B8h

IP.7: Unused.

IP.6: Unused.

PT2: This bit defines the Timer 2 interrupt priority.

PT2 = 1 sets it to higher priority level.

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.

PT1 = 1 sets it to higher priority level.

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.

PT0 = 1 sets it to higher priority level.

PX0: This bit defines the External interrupt 0 priority. PX0 = 1 sets it to higher priority level.

5.5.4

Interrupt Priority Register 1

Bit:

7

6

5

4

3

2

1

0

PX9

PX8

PX7

PX6

PX5

PX4

PX3

PX2

Mnemonic: IP1

Address: F8h

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

Interrupt Polarity Register

Bit:

7

6

5

4

3

2

1

0

IL9

IL8

IL7

IL6

IL5

IL4

IL3

IL2

Mnemonic: IX

Address: E9H

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.