Z86L825 Datasheet, PDF (36/79 Pages) Zilog, Inc. – 20-Pin Low-Voltage IR Microcontrollers

Z86L825/826/827
20-Pin Low-Voltage IR Microcontrollers
29
R249 IPR
D7 D6 D5 D4 D3 D2 D1 D0
Interrupt Group Priority
000 = Reserved
001 = C>A>B
101 = A>B>C
011 = A>C>B
100 = B>C>A
101 = C>B>A
110 = B>A>C
111 = Reserved
IRQ1, IRQ, Priority (Group C)
0 = IRQ1>IRQ4
1 = IRQ4>IRQ1
IRQ0, IRQ2, Priority (Group B)
0 = IRQ2>IRQ0
1 = IRQ0>IRQ2
IRQ3, IRQ5, Priority (Group A)
0 = IRQ5>IRQ3
1 = IRQ3>IRQ5
Reserved (must be 0)
Figure 23. Interrupt Priority Register—F9H: Write Only
R250 IRQ
D7 D6 D5 D4 D3 D2 D1 D0
IRQ0 = P32 Input
IRQ1 = P23 Input
IRQ2 = P31 Input
IRQ3 = T16
IRQ4 = T8
Inner Edge
P31 ↓ P32 ↓ = 00
P31 ↓ P32 ↑ = 01
P31 ↑ P32 ↓ = 10
P31 ↑↓ P32 ↑↓ = 11
Figure 24. Interrupt Request Register—FAH: Read/Write
PS008808-1203
PRELIMINARY