MC68HC11P2 Datasheet, PDF (208/268 Pages) Motorola, Inc – Microcontrollers

Freescale Semiconductor, Inc.
Resets and Interrupts
Begin
X-bit in
CCR set?
Yes
No
Highest priority
interrupt?
Yes
No
IRQ?
Yes
No
RTII = 1?
Yes
No
IC1I = 1?
Yes
No
IC2I = 1?
Yes
No
IC3I = 1?
Yes
No
OC1I = 1?
Yes
No
2A
XIRQ pin
low?
Yes
No
Set X-bit in CCR.
Fetch vector at
$FFF4, $FFF5
Fetch vector
RTIF = 1?
Yes
No
IC1F = 1?
Yes
No
IC2F = 1?
Yes
No
IC3F = 1?
Yes
No
OC1F = 1?
Yes
No
Fetch vector at
$FFF2, $FFF3
Fetch vector at
$FFF0, $FFF1
Fetch vector at
$FFEE, $FFEF
Fetch vector at
$FFEC, $FFED
Fetch vector at
$FFEA, $FFEB
Fetch vector at
$FFE8, $FFE9
2B
Technical Data
Resets and Interrupts
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MC68HC11P2 — Rev 1.0