MC68HC08AZ16 Datasheet, PDF (85/527 Pages) Motorola, Inc – HCMOS Microcontroller Unit

System Integration Module (SIM)
until the latched interrupt is serviced (or the I-bit is cleared). See Figure
8.
FROM RESET
YES
BREAK
INI _{BTIETRSREUTP?T?}
YES
NO
I-BIT SET?
NO
IRQ1
YES
INTERRUPT?
NO
STACK CPU REGISTERS.
SET I-BIT.
(As many interrupts as exist on chip) LOAD PC WITH INTERRUPT VECTOR.
FETCH NEXT
INSTRUCTION.
SWI
YES
INSTRUCTION?
NO
RTI
YES _{UNSTACK CPU REGISTERS.}
INSTRUCTION?
NO
EXECUTE INSTRUCTION.
Figure 8. Interrupt processing
MC68HC08AZ32
84
System Integration Module (SIM)
14-sim
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