MC68HC908AS32A Datasheet, PDF (197/280 Pages) Freescale Semiconductor, Inc – Microcontrollers

FROM RESET
YES
BREAIKBINTTSEERTR?UPT?
NO
YES
I BIT SET?
NO
Program Exception Control
IRQ1
INTERRUPT?
NO
(AS MANY INTERRUPTS
AS EXIST ON CHIP)
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 15-9. Interrupt Processing
MC68HC908AS32A Data Sheet, Rev. 2.0
Freescale Semiconductor
197