MC68HC05L28B MOTOROLA [Motorola, Inc], MC68HC05L28B Datasheet - Page 106

• Manufacturer Part Number: MC68HC05L28B
• Description: Flexible general-purpose microcomputer
• Manufacturer: MOTOROLA [Motorola, Inc]

10
MOTOROLA
10-4
Yes
External interrupt?
Is I-bit set?
Core timer
Fetch next
instruction
instruction
instruction
instruction
interrupt?
interrupt?
TIMER16
IRQ0,1,2
interrupt?
Execute
RESET
From
SWI
RTI
I
2
?
?
C
No
No
No
No
No
No
No
Figure 10-1 Interrupt flow chart
RESETS AND INTERRUPTS
Yes
Yes
Yes
Yes
Yes
Yes
Clear IRQ0,1,2
SWI:
IRQ0:
IRQ1:
IRQ2:
CTimer:
I
TIM16:
2
C:
Load PC From:
Restore registers
PC, X, A, CC
CC, A, X, PC
from stack:
Stack
Set I-bit
$3FFC - $3FFD
$3FFA - $3FFB
$3FFA - $3FFB
$3FFA - $3FFB
$3FF8 - $3FF9
$3FF6 - $3FF7
$3FF4 - $3FF5
MC68HC05L28
TPG