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Is there any other low-power mode besides standby for S32K344, such as sleep mode?

Does S32K344 have sleep mode?

Re: Is there any other low-power mode besides standby for S32K344, such as sleep mode?

Hi@SCoder41

We first need to discuss the control method between S32K344 and your power management chip. If this is a control method of an IO port, it can generally be solved by the following methods
1. Pad Keeping feature, the IO port of S32K344 supports Pad Keeping feature, which allows the IO of S32K344 to maintain the state in RUN mode in Standby mode until the Pad Keeping feature is turned off

2. It can be achieved through some external switch circuits, such as setting a normally open or normally closed switch circuit according to the characteristics of your power management chip, so that the MCU control is only required in RUN mode.

Re: Is there any other low-power mode besides standby for S32K344, such as sleep mode?

Our S32K344 manages the power management chips that supply power to other modules, and requires S32K344 to enable these power management chips. If I wake up S32K344 from standby mode, it will perform a system reset from the reset handler to run the program, and other modules on our board will lose power. How can I solve this problem?

Re: Is there any other low-power mode besides standby for S32K344, such as sleep mode?Our S32K344 manages the power management chips that supply power to other modules, and requires S32K344 to enable these power management chips. If I wake up S32K344 from standby mode, it will perform a system reset from the reset handler to run the program, and other modules on our board will lose power. How can I solve this problem?Re: Is there any other low-power mode besides standby for S32K344, such as sleep mode?

Hi@SCoder41

Actually there should be only RUN mode and Standby mode, but in RUN mode you can enter VLSRun by lowering the main frequency, but it is still RUN mode.

Senlent_1-1742177801088.pngSenlent_2-1742177828211.png

https://community.nxp.com/t5/S32K-Knowledge-Base/S32K3-Low-Power-Management-AN-and-demos/ta-p/152772...


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最終更新日:
‎11-21-2025 09:54 PM
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