Datasheet

Exception Control
MC68HC908GZ16 • MC68HC908GZ8 Data Sheet, Rev. 4
Freescale Semiconductor 221
Figure 16-10. Interrupt Processing
NO
NO
YES
NO
NO
YES
NO
YES
AS MANY INTERRUPTS
I BIT SET?
FROM RESET
BREAK
I BIT SET?
IRQ
INTERRUPT?
SWI
INSTRUCTION?
RTI
INSTRUCTION?
FETCH NEXT
INSTRUCTION
UNSTACK CPU REGISTERS
STACK CPU REGISTERS
SET I BIT
LOAD PC WITH INTERRUPT VECTOR
EXECUTE INSTRUCTION
YES
YES
AS EXIST ON CHIP
INTERRUPT?