Renesas MCU Board for PC4504 Emulator System M34570T-MCU - Manual (Page 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 68k Ω.
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
X
IN
WRST