Renesas MCU Board for PC4504 Emulator System M34570T-MCU Informations techniques télécharger pdf (Page 27)

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Figure 5.2 P0, P1 and D port output timings

5.7 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 M34570T-MCU, output timings are different from those of the actual MCUs for

the following ports that are configured with port emulation circuits:

• Ports P00 to P03

• Ports P10 to P13

• Ports D0 to D5

With the actual MCUs, changes occur at the beginning of the T3 state of an output instruction.

With the M34570T-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 M34570T-MCU.

For the other ports, the output timings are the same as with the actual MCUs.

Output instruction Next output instruction

System clock

P0, P1, D port

output timings

on actual MCUs

P0, P1, D

0 to D5

port output timings of

M34570T-MCU

1 2 ... 22 23 24 25 26 27 28 29 30 31 32 ... 35 36

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Renesas MCU Board for PC4504 Emulator System M34570T-MCU Informations techniques Page 27