Renesas MCU Board for PC4504 Emulator System M34570T-MCU Informacje Techniczne Pobierz pdf (Strona 26)

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Figure 5.1 Waveform output from check pin TP5

5.5 Low-voltage Detection

Because the power to the evaluation MCU of M34570T-MCU is supplied from the M34570T-MCU,

low-voltage cannot be detected. To evaluate the operation associated with low-voltage detection, use

an evaluation MCU (OTP version).

5.6 P0, P1 Port Pullup

Port P0 and P1's (M34570T-MCU) resistance value of the pullup register is 68kΩ.

5.4 Watchdog Timer

The M34570T-MCU does not have an operational watchdog timer. Therefore, use an evaluation

MCU (OTP version) to verify the operation associated with a watchdog timer.

The M34570T-MCU outputs a signal whose waveform is shown below from the check pin TP5

during WRST instruction execution cycles. This signal allows you to check the initialization cycle

of a watchdog timer.

WRST instruction

Next WRST instruction

System clock

WRST

1 2 ... 21 22 23 24 25 26 27 28 29 30 31 ... 35 36

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Renesas MCU Board for PC4504 Emulator System M34570T-MCU Informacje Techniczne Strona 26