MC68HC08AZ60 Datasheet, PDF (168/452 Pages) Motorola, Inc – Advance Information

Freescale Semiconductor, Inc.
External Interrupt Module (IRQ)
FROM RESET
YES
I BIT SET?
NO
INTERRUPT?
NO
YES
STACK CPU REGISTERS.
SET I BIT.
LOAD PC WITH INTERRUPT VECTOR.
FETCH NEXT
INSTRUCTION.
SWI
YES
INSTRUCTION?
NO
RTI
YES
INSTRUCTION?
NO
UNSTACK CPU REGISTERS.
EXECUTE INSTRUCTION.
Figure 2. IRQ Interrupt Flowchart
MC68HC08AZ60 — Rev 1.0
168
External Interrupt Module (IRQ)
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4-irq
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