Datasheet

System Integration Module (SIM)
Exception Control
MC68HC908JB8•MC68HC08JB8•MC68HC08JT8 — Rev. 2.3 Technical Data
Freescale Semiconductor System Integration Module (SIM) 105
Figure 8-8. Interrupt Processing
NO
NO
NO
YES
NO
NO
YES
NO
YES
YES
FROM RESET
BREAK
I BIT SET?
IRQ
INTERRUPT
USB
INTERRUPT
FETCH NEXT
INSTRUCTION
UNSTACK CPU REGISTERS
STACK CPU REGISTERS
SET I BIT
LOAD PC WITH INTERRUPT VECTOR
EXECUTE INSTRUCTION
YES
YES
I BIT SET?
INTERRUPT
YES
OTHER
INTERRUPTS
NO
SWI
INSTRUCTION
RTI
INSTRUCTION
?
?
?
?
?
?