PWR_DeepPowerDown in KW45

Chan_17 — Wed, 10 Sep 2025 06:31:11 GMT

Hi Team,

how to keep MCU in PWR_DeepPowerDown and is it possible to wake up MCU from PWR_DeepPowerDown mode with interrupt ? Please provide details. I checked document mentioned below in that mentioned MCU will wake up after reset, is it software or hardware reset? i wanted to wake up MCU using interrupt so please provide details about this.

ref :https://mcuxpresso.nxp.com/mcuxsdk/25.06.00/html/middleware/wireless/framework/services/LowPower/README.html#functional-description

Re: PWR_DeepPowerDown in KW45

luis_maravilla — Wed, 10 Sep 2025 18:42:24 GMT

Hello,

Wake up from Deep Power Down mode is exited through the reset sequence [Hardware Reset], this power mode is the lowest disponible. [Section 3.4 Wake up time]

The example from SDK "power_mode_switch_k4" has the option to enter 2 available DeepPowerDown modes and select a wakeup source, using a button [ SW3 in KW45B41Z-EVK ] or wakeup from VBAT [ SW5 in KW45B41Z-EVK ].

Could this example match what you want to implement with KW45?

Could you help us confirm, Are you using the KW45B41Z-EVK or a custom board?

Best Regards

Luis

topic PWR_DeepPowerDown in KW45 in Wireless MCU

PWR_DeepPowerDown in KW45

Re: PWR_DeepPowerDown in KW45