Z86L81 Datasheet, PDF (82/88 Pages) Maxim Integrated Products – 28-Pin Low-Voltage Infrared Microcontrollers

Z86L81/86/98
28-Pin Low-Voltage Infrared Microcontrollers
76
R250 IRQ
D7 D6 D5 D4 D3 D2 D1 D0
IRQ0 = P32 Input
IRQ1 = P33 Input
IRQ2 = P31 Input
IRQ3 = T16
IRQ4 = T8
IRQ5 = LVD
Inter Edge
P31 P32 = 00
P31 P32 = 01
P31 P32 = 10
P31 P32 = 11
Figure 47. Interrupt Request Register (FAh: Read/Write)
R251 IMR
D7 D6 D5 D4 D3 D2 D1 D0
1 Enables IRQ5–IRQ0
(D0 = IRQ0)
Reserved (Must be 0)
0 Master Interrupt Disable *
1 Master Interrupt Enable * *
* Default setting after reset
* * Only by using E1, D1 instruction; D1 is required before changing the IMR register
Figure 48. Interrupt Mask Register (FBh: Read/Write)
19-4615; Rev 0; 4/09