MC68HC705KJ1 Datasheet, PDF (77/108 Pages) Motorola, Inc – HCMOS Microcontroller Unit

FROM RESET
YES
I BIT SET?
NO
EXTERNAL
YES
INTERRUPT?
NO
CLEAR IRQ LATCH.
TIMER
INTERRUPT?
NO
YES
STACK PC, X, A, CCR.
SET I BIT.
LOAD PC WITH INTERRUPT VECTOR.
FETCH NEXT
INSTRUCTION.
SWI
YES
INSTRUCTION?
NO
RTI
YES
INSTRUCTION?
UNSTACK CCR, A, X, PC.
NO
EXECUTE INSTRUCTION.
Figure 8-7. Interrupt Flowchart
Interrupts
MC68HC705KJ1 • MC68HRC705KJ1 • MC68HLC705KJ1 Data Sheet, Rev. 4.1
Freescale Semiconductor
77