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MCF51QE128 MCU Series Reference Manual, Rev. 3
168 Freescale Semiconductor
7.3.4.2 MOVE Instruction Execution Times
Table 7-14 lists execution times for MOVE.{B,W} instructions; Table 7-15 lists timings for MOVE.L.
NOTE
For all tables in this section, the execution time of any instruction using the
PC-relative effective addressing modes is the same for the comparable
An-relative mode.
The nomenclature xxx.wl refers to both forms of absolute addressing, xxx.w
and xxx.l.
ET with {<ea> = (d16,PC)} equals ET with {<ea> = (d16,An)}
ET with {<ea> = (d8,PC,Xi*SF)} equals ET with {<ea> = (d8,An,Xi*SF)}
Table 7-14. MOVE Byte and Word Execution Times
Source
Destination
Rx (Ax) (Ax)+ -(Ax) (d16,Ax) (d8,Ax,Xi*SF) xxx.wl
Dy 1(0/0) 1(0/1) 1(0/1) 1(0/1) 1(0/1) 2(0/1) 1(0/1)
Ay 1(0/0) 1(0/1) 1(0/1) 1(0/1) 1(0/1) 2(0/1) 1(0/1)
(Ay) 2(1/0) 3(1/1) 3(1/1) 3(1/1) 3(1/1) 4(1/1)) 3(1/1)
(Ay)+ 2(1/0) 3(1/1) 3(1/1) 3(1/1) 3(1/1) 4(1/1)) 3(1/1)
-(Ay) 2(1/0) 3(1/1) 3(1/1) 3(1/1) 3(1/1) 4(1/1)) 3(1/1)
(d16,Ay) 2(1/0) 3(1/1) 3(1/1) 3(1/1) 3(1/1) — —
(d8,Ay,Xi*SF) 3(1/0) 4(1/1) 4(1/1) 4(1/1) — — —
xxx.w 2(1/0) 3(1/1) 3(1/1) 3(1/1) — — —
xxx.l 2(1/0) 3(1/1) 3(1/1) 3(1/1) — — —
(d16,PC) 2(1/0) 3(1/1) 3(1/1) 3(1/1) 3(1/1) — —
(d8,PC,Xi*SF) 3(1/0) 4(1/1) 4(1/1) 4(1/1)) — — —
#xxx 1(0/0) 3(0/1) 3(0/1) 3(0/1) 1(0/1) — —
Table 7-15. MOVE Long Execution Times
Source
Destination
Rx (Ax) (Ax)+ -(Ax) (d16,Ax) (d8,Ax,Xi*SF) xxx.wl
Dy 1(0/0) 1(0/1) 1(0/1) 1(0/1) 1(0/1) 2(0/1) 1(0/1)
Ay 1(0/0) 1(0/1) 1(0/1) 1(0/1) 1(0/1) 2(0/1) 1(0/1)
(Ay) 2(1/0) 2(1/1) 2(1/1) 2(1/1) 2(1/1) 3(1/1) 2(1/1)
(Ay)+ 2(1/0) 2(1/1) 2(1/1) 2(1/1) 2(1/1) 3(1/1) 2(1/1)
-(Ay) 2(1/0) 2(1/1) 2(1/1) 2(1/1) 2(1/1) 3(1/1) 2(1/1)
(d16,Ay) 2(1/0) 2(1/1) 2(1/1) 2(1/1) 2(1/1) — —