MC68HC908GR8 Datasheet, PDF (195/286 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

FROM RESET
I BBIRTESAEKT?
YES
INTERRUPT?
NO
YES
I BIT SET?
NO
IRQ
YES
INTERRUPT?
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?
NO
UNSTACK CPU REGISTERS
EXECUTE INSTRUCTION
Figure 19-10. Interrupt Processing
Exception Control
MC68HC908GR8 • MC68HC908GR4 Data Sheet, Rev. 7
Freescale Semiconductor
195