W78C801 Datasheet, PDF (7/18 Pages) Winbond – 8-BIT MICROCONTROLLER

W78C801
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.
Interrupt Polarity Register
Bit:
7
6
5
4
3
2
1
0
IL9 IL8 IL7 IL6 IL5 IL4 IL3 IL2
Mnemonic: IX
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.
Address: E9H
Note: 0 = active LOW, 1 = active HIGH.
Interrupt Request Flag Register
Bit:
7
6
5
4
3
2
1
0
IQ9 IQ8 IQ7 IQ6 IQ5 IQ4 IQ3 IQ2
Mnemonic: IRQ
IQ9: External interrupt 9 request flag.
IQ8: External interrupt 8 request flag.
IQ7: External interrupt 7 request flag.
IQ6: External interrupt 6 request flag.
IQ5: External interrupt 5 request flag.
IQ4: External interrupt 4 request flag.
IQ3: External interrupt 3 request flag.
IQ2: External interrupt 2 request flag.
Address: C0H
Publication Release Date: February 1999
-7-
Revision A3