Freescale Semiconductor MC68HC908MR32 - Manual (Page 188)

System Integration Module (SIM)
MC68HC908MR32 • MC68HC908MR16 Data Sheet, Rev. 6.1
188 Freescale Semiconductor
Figure 14-8. Interrupt Processing
NO
NO
YES
AS MANY INTERRUPTS AS EXIST ON CHIP
SWI
INSTRUCTION?
RTI
INSTRUCTION?
FETCH NEXT
INSTRUCTION
UNSTACK CPU REGISTERS
STACK CPU REGISTERS
SET I BIT
LOAD PC WITH INTERRUPT VECTOR
EXECUTE INSTRUCTION
YES
NO
YES
NO
NO
YES
I BIT SET?
FROM RESET
BREAK OR SWI
I BIT SET?
INTERRUPT?
YES
INTERRUPT?