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5.7.3.13 EXCEPTION-RELATED INSTRUCTIONS AND OPERATIONS. The exception-
related instructions and operations table indicates the number of clock periods needed for
the processor to perform the specified exception-related actions. No additional tables are
needed to calculate total effective execution time for these instructions. The total number
of clock cycles is outside the parentheses. The numbers inside parentheses (r/p/w) are
included in the total clock cycle number. All timing data assumes two-clock reads and
writes.
BKPT (Acknowledged)
BKPT (Bus Error)
Breakpoint (Acknowledged)
Breakpoint (Bus Error)
Interrupt
RESET
STOP
LPSTOP
Divide-by-Zero
Trace
TRAP #
ILLEGAL
A-line
F-line (First word illegal)
F-line (Second word illegal) ea = Rn
F-line (Second word illegal) ea
F-line (Second word illegal) ea
Privileged
TRAPcc (trap)
TRAPcc (no trap)
TRAPcc.W (trap)
TRAPcc.W (no trap)
TRAPcc.L (trap)
TRAPcc.L (no trap)
TRAPV (trap)
TRAPV (no trap)
Minimum interrupt acknowledge cycle time is assumed to be three clocks.
NOTE: The F-line (second word illegal) operation involves a save step which other
operations do not have. To calculate the total operation time, calculate the save, the
calculate EA, and the operation execution times, and combine in the order
listed, using the equations given in 5.7.1.6 Instruction Execution Time
Calculation.
5-112
Freescale Semiconductor, Inc.
Instruction
Rn (Save)
Rn (Op)
MC68340 USER'S MANUAL
For More Information On This Product,
Go to: www.freescale.com
Head
Tail
0
0
0
2
0
0
0
2
0
2
0
0
2
0
3
2
0
2
0
2
4
2
0
2
0
2
0
2
1
2
1
1
4
2
0
2
2
2
2
0
2
2
0
0
0
2
0
0
2
2
2
0
Cycles
14(1/0/0)
35(3/2/4)
10(1/0/0)
42(3/2/6)
30(3/2/4)
518(0/1/0)
12(0/1/0)
25(0/3/1)
36(2/2/6)
36(2/2/6)
29(2/2/4)
25(2/2/4)
25(2/2/4)
25(2/2/4)
31(2/3/4)
3(0/1/0)
29(2/2/4)
25(2/2/4)
38(2/2/6)
4(0/1/0)
38(2/2/6)
4(0/2/0)
38(2/2/6)
6(0/3/0)
38(2/2/6)
4(0/1/0)
MOTOROLA
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