MC68HC11F1_13 Datasheet, PDF (76/158 Pages) Freescale Semiconductor, Inc – Technical Data

Freescale Semiconductor, Inc.
BEGIN
X BIT
YES
IN CCR SET
?
NO
HIGHEST
PRIORITY
YES
INTERRUPT
?
NO
XIRQ PIN
LOW
?
NO
YES
SET X BIT IN CCR
FETCH VECTOR
$FFF4, FFF5
FETCH VECTOR
IRQ
YES
?
NO
FETCH VECTOR
$FFF2, FFF3
RTII = 1
YES
?
NO
REAL-TIME
YES
FETCH VECTOR
INTERRUPT
$FFF0, FFF1
?
NO
IC1I = 1
YES
?
NO
TIMER
IC1F
?
NO
YES
FETCH VECTOR
$FFEE, FFEF
IC2I = 1
YES
?
NO
TIMER
IC2F
?
NO
YES
FETCH VECTOR
$FFEC, FFED
IC3I = 1
YES
?
NO
TIMER
IC3F
?
NO
YES
FETCH VECTOR
$FFEA, FFEB
OC1I = 1
YES
?
NO
2A
TIMER
OC1F
?
NO
YES
FETCH VECTOR
$FFE8, FFE9
2B
Figure 5-3 Interrupt Priority Resolution (1 of 2)
5-14
RESETS AND INTERRUPTS
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MC68HC11F1
TECHNICAL DATA