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In Traveo™ S6J3110/3120/3400 MCUs, why is the Partial Wakeup Trigger (PWUTRG) signal not generated in partial wakeup mode?
This may happen if the PWU_PWUC register, which is set after power on, is cleared by events such as software reset or hard reset except for a power-on reset. Check the register setting and ensure that the register is set correctly even when a reset other than the power domain reset (*1) is applied. For details of the related register, see the registers of the RESET chapter in the Technical Reference Manual from the following link.