MC908MR32CFUE Datasheet, PDF (93/282 Pages) Freescale Semiconductor, Inc – Microcontrollers

FROM RESET
YES
I BIT SET?
NO
INTERRUPT?
NO
YES
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 8-3. IRQ Interrupt Flowchart
IRQ Pin
MC68HC908MR32 • MC68HC908MR16 Data Sheet, Rev. 6.1
Freescale Semiconductor
93