Renesas MCU Board for 4513/4514 Group MCUs M34514T-MCU - Manual (Page 31)

( 31 / 42 )
Figure 5.2 P0, P1 and D port output timings
5.6 Port I/O Timing
(1) Port input timing
Port input timings are the same as with the actual MCUs.
(2) Port output timing
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
0
to P0
3
• Ports P1
0
to P1
3
• Ports D
0
to D
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.
Next output instruction Output instruction
System clock
X
IN
P0, P1, D port
output timings
on actual MCUs
P0, P1, D port
output timings of
M34514T-MCU