MC68HC908GP32_08 Datasheet, PDF (165/266 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

FROM RESET
Exception Control
I BBIRTESAEKT?
YES
INTERRUPT?
NO
YES
I BIT SET?
NO
IRQ
INTERRUPT?
YES
NO
AS MANY INTERRUPTS
AS EXIST ON CHIP
STACK CPU REGISTERS
SET I BIT
LOAD PC WITH INTERRUPT VECTOR
FETCH NEXT
INSTRUCTION
SWI
YES
INSTRUCTION?
NO
RTI
YES
INSTRUCTION?
UNSTACK CPU REGISTERS
NO
EXECUTE INSTRUCTION
Figure 14-10. Interrupt Processing
MC68HC908GP32 Data Sheet, Rev. 10
Freescale Semiconductor
165