Z86E30 Datasheet, PDF (40/66 Pages) Zilog, Inc. – Z8 4K OTP Microcontroller

Z86E30/E31/E40
Z8 4K OTP Microcontroller
Interrupts. The MCU has six different interrupts from six
different sources. The interrupts are maskable and priori-
tized (Figure 28). The six sources are divided as follows:
four sources are claimed by Port 3 lines P33-P30) and two
Zilog
in counter/timers. The Interrupt Mask Register globally or
individually enables or disables the six interrupt requests
(Table 10).
IRQ0 IRQ2
IRQ1, 3, 4, 5
Interrupt
Edge
Select
IRQ (D6, D7)
IRQ
Interrupt
Request
Global
Interrupt
Enable
IMR
6
IPR
Priority
Logic
Name
IRQ0
IRQ1
IRQ2
IRQ3
IRQ4
IRQ5
Vector Select
Figure 28. Interrupt Block Diagram
Table 10. Interrupt Types, Sources, and Vectors
Source
/DAV0, IRQ0
IRQ1
/DAV2, IRQ2, T_IN
IRQ3
T0
TI
Vector Location
0, 1
2, 3
4, 5
6, 7
8, 9
10, 11
Comments
External (P32), Rising/Falling Edge Triggered
External (P33), Falling Edge Triggered
External (P31), Rising/Falling Edge Triggered
External (P30), Falling Edge Triggered
Internal
Internal
40
PRELIMINARY
DS97Z8X0500