S32K312-sleep problem

[Simon_Liu]

Background:
1. Use the S32Design Studio tool to import the example [Power_Ip_Example_S32K312], and additionally configure the STANDBY mode.
2. Added Wkpu in Drivers and configured PTB19 as the wakeup source, and configured related Wkp interrupt.
3. Configure PTE18 as GPIO output

Operation:
1. Perform Power initialization, Siul2 initialization, wkp initialization, interrupt enable, etc. in the Main function.
2. Set PTE18 as high level output.
3. 3. Call the Power_Ip_SetMode function to pass in the StandBy parameters.

Problems:
1. PTE18 does not change to low level after StandBy.
2. The current does not drop significantly after StandBy.

What are the reasons for the above two questions?

[Senlent]

Hi@SimonLiu93

would you please take a look at this post, it might be help you.

https://community.nxp.com/t5/S32K/about-S32K312-STANDBY-CURRENT/td-p/1654304 

[Simon_Liu]

Hi @Senlent 

Thank you for your answer.

Regarding the first question, after entering StandBy, if PadKeeping is not set, will the output pad level be maintained?

[Senlent · Accepted solution]

Hi@SimonLiu93

if padkeeping is disabled, the pin will remain the run mode after entering standby mode, but once it wakeups, the pin will become floating until initialized by software again.

[Simon_Liu]

Hi @Senlent 

Thank you for your answer