z86e31 ZiLOG Semiconductor, z86e31 Datasheet - Page 38

• Manufacturer Part Number: z86e31
• Description: Z8 4k Otp Microcontroller
• Manufacturer: ZiLOG Semiconductor

FUNCTIONAL DESCRIPTION (Continued)
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
38
Name
IRQ0
IRQ1
IRQ2
IRQ3
IRQ4
IRQ5
Interrupt
Request
DAV2, IRQ2, T
DAV0, IRQ0
Source
IRQ1
IRQ3
T0
TI
Table 10. Interrupt Types, Sources, and Vectors
Interrupt
Enable
Global
IN
Figure 28. Interrupt Block Diagram
P R E L I M I N A R Y
Vector Location
10, 11
0, 1
2, 3
4, 5
6, 7
8, 9
IRQ1, 3, 4, 5
Vector Select
in counter/timers. The Interrupt Mask Register globally or
individually enables or disables the six interrupt requests
(Table 10).
Priority
Logic
IMR
IRQ
IPR
IRQ0 IRQ2
Interrupt
External (P32), Rising/Falling Edge Triggered
External (P33), Falling Edge Triggered
External (P31), Rising/Falling Edge Triggered
External (P30), Falling Edge Triggered
Internal
Internal
Select
Edge
Comments
IRQ (D6, D7)
6
DS97Z8X0502
Zilog