MC68HC705C8ACS

Manufacturer Part NumberMC68HC705C8ACS
ManufacturerFreescale Semiconductor, Inc
MC68HC705C8ACS datasheet
 


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Freescale Semiconductor, Inc.
Interrupts
STACKING
ORDER
NOTE:
If more than one interrupt request is pending, the CPU fetches the vector
of the higher priority interrupt first. A higher priority interrupt does not
interrupt a lower priority interrupt service routine unless the lower priority
interrupt service routine clears the I bit. See
listing.
Figure 4-5
Technical Data
58
UNSTACKING
ORDER
5
1
CONDITION CODE REGISTER
4
2
ACCUMULATOR
3
3
INDEX REGISTER
2
4
PROGRAM COUNTER (HIGH BYTE)
1
5
PROGRAM COUNTER (LOW BYTE)
Figure 4-4. Interrupt Stacking Order
shows the sequence of events caused by an interrupt.
Interrupts
For More Information On This Product,
Go to: www.freescale.com
$00C0 (BOTTOM OF STACK)
$00C1
$00C2
$00FD
$00FE
$00FF (TOP OF STACK)
Table 4-1
for a priority
MC68HC705C8A — Rev. 3