Datasheet

Program Exception Control
MC68HC908AZ60A • MC68HC908AS60A • MC68HC908AS60E Data Sheet, Rev. 6
Freescale Semiconductor 119
Figure 9-9. Interrupt Processing
NO
NO
NO
YES
NO
NO
YES
YES
(AS MANY INTERRUPTS
I BIT SET?
FROM RESET
BREAK INTERRUPT?
I BIT SET?
IRQ1
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)