MC68HC908AZ32ACFU MOTOROLA [Motorola, Inc], MC68HC908AZ32ACFU Datasheet - Page 202

• Manufacturer Part Number: MC68HC908AZ32ACFU
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

External Interrupt Module (IRQ1)
15.5 IRQ Pin
Advance Information
202
A logic 0 on the IRQ1 pin can latch an interrupt request into the IRQ
latch. A vector fetch, software clear, or reset clears the IRQ latch.
Freescale Semiconductor, Inc.
For More Information On This Product,
YES
External Interrupt Module (IRQ1)
Go to: www.freescale.com
INSTRUCTION?
INSTRUCTION?
INSTRUCTION.
Figure 15-2. IRQ Interrupt Flowchart
FROM RESET
INTERRUPT?
FETCH NEXT
I BIT SET?
SWI
RTI
NO
NO
NO
NO
YES
YES
YES
LOAD PC WITH INTERRUPT VECTOR.
UNSTACK CPU REGISTERS.
STACK CPU REGISTERS.
EXECUTE INSTRUCTION.
SET I BIT.
68HC908AZ32A — Rev 0.0
MOTOROLA