Low Power Mode on S32K344

enthuCutlet — Thu, 28 Dec 2023 15:51:59 GMT

From the reference manual and the application note I understand that the MCU resets(even if we use the wakeup unit to exit) everytime we exit Standby mode and enter RUN mode. I have a big project that runs multiple peripherals all the time. But I want to have SLEEP mode where I make the MCU to go to sleep(low power mode) and start execution from where I last stopped. But my RAM contents are lost due to the reset on standby exit and my program counter starts from main.

Is there any provision to have this functionality that I have described without losing my RAM contents.

Re: Low Power Mode on S32K344

Senlent — Tue, 02 Jan 2024 02:39:13 GMT

Hi@enthuCutlet

S32k344 have 32KB Standby RAM space which can be used to save data and the data won't be lost even wake-up from standby mode.

Here is some demo and application note for you to better understand Standby RAM .

https://community.nxp.com/t5/S32K-Knowledge-Base/S32K3-Low-Power-Management-AN-and-demos/ta-p/1527724

you can take a look at the demo "S32K344_RTC_StandbyRAM_Wkup_S32DS_3_4_RTD_LLD_2_0.ZIP"

topic Re: Low Power Mode on S32K344 in S32K

Low Power Mode on S32K344

Re: Low Power Mode on S32K344