MC68HC705JJ7 Datasheet, PDF (35/164 Pages) Freescale Semiconductor, Inc – Microcontrollers

FROM
RESET
YES
I BIT SET?
NO
EXTERNAL ^YES
INTERRUPT?
NO
CORE TIMER ^YES
INTERRUPT?
NO
TIMER
YES
INTERRUPT?
NO
SERIAL
YES
INTERRUPT?
NO
ANALOG
YES
INTERRUPT?
NO
CLEAR IRQ LATCH
STACK PCL, PCH, X, A, CCR
SET I BIT
LOAD PC WITH INTERRUPT VECTOR
FETCH NEXT
INSTRUCTION
SWI
YES
INSTRUCTION?
NO
RTI
YES
INSTRUCTION?
NO
UNSTACK CCR, A, X, PCH, PCL
EXECUTE INSTRUCTION
Figure 4-2. Interrupt Flowchart
Interrupt Processing
MC68HC705JJ7 • MC68HC705JP7 Advance Information Data Sheet, Rev. 4.1
Freescale Semiconductor
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