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5.6 Port I/O Timing
(1) Port input timing
(2) Port output timing
Figure 5.2 P0, P1 and D port output timings
Port input timings are the same as with the actual MCUs.
When using the M34514T-MCU, output timings are different from those of the actual MCUs for
the following ports that are configured with port emulation circuits:
• Ports P0
to P0
0
3
• Ports P1
to P1
0
3
• Ports D
to D
0
5
With the actual MCUs, changes occur at the beginning of the T3 state of an output instruction.
With the M34514T-MCU, changes occur at the beginning of the T2 state of the next output
instruction. Figure 5.2 shows the port output timings of the actual MCUs and M34514T-MCU.
For the other ports, the output timings are the same as with the actual MCUs.
System clock
X
IN
P0, P1, D port
output timings
on actual MCUs
P0, P1, D port
output timings of
M34514T-MCU
Output instruction
( 31 / 42 )
Next output instruction
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