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PWR_DeepPowerDown in KW45

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PWR_DeepPowerDown in KW45

‎09-09-2025 11:31 PM
1,373 Views
Chan_17
Contributor III

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/REA...

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‎09-10-2025 11:42 AM
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luis_maravilla
NXP Employee
NXP Employee

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

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