z8f1601 ZiLOG Semiconductor, z8f1601 Datasheet - Page 64

• Manufacturer Part Number: z8f1601
• Description: Z8 Encore!? Microcontroller With Flash Memory And 10-bit A/d Converter
• Manufacturer: ZiLOG Semiconductor

Architecture
Operation
PS017609-0803
Master Interrupt Enable
Figure 65 illustrates a block diagram of the interrupt controller.
Figure 65. Interrupt Controller Block Diagram
The master interrupt enable bit ( IRQE ) in the Interrupt Control register globally enables
and disables interrupts.
Interrupts are globally enabled by any of the following actions:
•
•
•
Interrupts are globally disabled by any of the following actions:
•
•
•
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Internal Interrupts
Port Interrupts
Execution of an EI (Enable Interrupt) instruction
Execution of an IRET (Return from Interrupt) instruction
Writing a 1 to the IRQE bit in the Interrupt Control register
Execution of a DI (Disable Interrupt) instruction
eZ8 CPU acknowledgement of an interrupt service request from the interrupt
controller
Writing a 0 to the IRQE bit in the Interrupt Control register
Reset
Z8F640x/Z8F480x/Z8F320x/Z8F240x/Z8F160x
Medium
Priority
Priority
Priority
High
Low
Priority
Mux
Vector
IRQ Request
Interrupt Controller
Z8 Encore!
®
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