MC68HC908AZ60 Datasheet, PDF (119/480 Pages) Motorola, Inc – HCMOS Microcontroller Unit

FROM RESET
YES
BREAIKBITNTSERT?RUPT?
NO
YES
I BIT SET?
NO
System Integration Module (SIM)
Program Exception Control
IRQ1
INTERRUPT?
NO
(AS MANY INTERRUPTS
AS EXIST ON CHIP)
YES
STACK CPU REGISTERS.
SET I BIT.
LOAD PC WITH INTERRUPT VECTOR.
13-sim
MOTOROLA
FETCH NEXT
INSTRUCTION.
SWI
YES
INSTRUCTION?
NO
RTI
YES
INSTRUCTION?
NO
UNSTACK CPU REGISTERS.
EXECUTE INSTRUCTION.
Figure 9. Interrupt Processing
System Integration Module (SIM)
MC68HC908AZ60 — Rev 2.0
117