Interrupt Processing - Motorola MC68HC908GP32 Technical Data Manual

Resets and Interrupts
Technical Data
78
Freescale Semiconductor, Inc.
FROM RESET
YES
BREAK
INTERRUPT
?
NO
YES
I BIT SET?
I BIT SET?
NO
YES
IRQ
INTERRUPT
?
NO
YES
CGM
INTERRUPT
?
NO
YES
OTHER
INTERRUPTS
?
NO
FETCH NEXT
INSTRUCTION
SWI
YES
INSTRUCTION
?
NO
RTI
YES
INSTRUCTION
?
NO
Figure 4-6. Interrupt Processing
Resets and Interrupts
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STACK CPU REGISTERS
SET I BIT
LOAD PC WITH INTERRUPT VECTOR
UNSTACK CPU REGISTERS
EXECUTE INSTRUCTION
MC68HC908GP32 MC68HC08GP32
•
Rev. 6
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MOTOROLA