MC68HC08AS32 Datasheet, PDF (133/394 Pages) Motorola, Inc – M68HC08 Family of 8-bit microcontroller units (MCUs)

FROM RESET
System Integration Module (SIM)
Program Exception Control
YES
BREAIKBINTTSEERTR?UPT?
NO
YES
I BIT SET?
NO
IRQ0
YES
INTERRUPT?
NO
IRQ1
YES
INTERRUPT?
NO
AS MANY INTERRUPTS
AS EXIST ON CHIP
STACK CPU REGISTERS
SET I BIT
LOAD PC WITH INTERRUPT VECTOR
FETCH NEXT
INSTRUCTION
MC68HC08AS32 — Rev. 3.0
MOTOROLA
SWI
YES
INSTRUCTION?
NO
RTI
YES
INSTRUCTION?
NO
UNSTACK CPU REGISTERS
EXECUTE INSTRUCTION
Figure 9-8. Interrupt Processing
System Integration Module (SIM)
Advance Information
133