Z86L7808PSC View Datasheet(PDF) - Zilog
Part Name
Description
MFG CO.
'Z86L7808PSC' PDF : 59 Pages View PDF
Z86L78
IR/Low-Voltage Microcontroller
FUNCTIONAL DESCRIPTION (Continued)
Interrupts. The Z86L78 has five different interrupts, which
are maskable and prioritized (Figure 30). The five sources
are divided as follows: two are claimed by Port 3 lines P33,
P31, one by the low voltage detect circuit (IRQ0) and the
Zilog
remaining two by the counter/timers (Table 5). The Inter-
rupt Mask Register globally or individually enables or dis-
ables the five interrupt requests.
IRQ IRQ0 IRQ2
134
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
2-38
DS97LVO0701
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