Z86L70 Datasheet, PDF (39/61 Pages) Zilog, Inc. – IR/Low-Voltage Microcontroller

Zilog
Z86L70/71/75/C71
IR/Low-Voltage Microcontroller
Interrupts. The Z86L7X has five different interrupts. The counter/timers (Table 3). The Interrupt Mask Register glo-
interrupts are maskable and prioritized (Figure 30). The bally or individually enables or disables the five interrupt
five sources are divided as follows: three sources are requests.
claimed by Port 3 lines P33-P31, the remaining two by the
1
IRQ0 IRQ2
IRQ 1, 3, 4
Interrupt
Edge
Select
IRQ Register (D6, D7)
IRQ
IMR
5
Interrupt
Request
Global
Interrupt
Enable
IPR
Priority
Logic
Vector Select
Figure 30. Interrupt Block Diagram
DS97LVO0500
PRELIMINARY
1-39