topic Re: S32K312-STANDBY mode supply currents problem in S32K

S32K312-STANDBY mode supply currents problem

Simon-Liu — Mon, 06 Nov 2023 03:21:43 GMT

Hello

I was testing the current in StandBy mode and RUN mode, and found that the current difference between the two modes was about 23mA. Checking the DS document, I found that the current in RUN mode is 37mA, and in StandBy mode, the current when FIRC is ON is 0.887mA. The current difference is 36mA, which is quite different from my test results.
Excuse me:
1. The FIRC clock frequency used in the StandBy mode I configured is 48MHz. Is there any current at this clock frequency?
2. What may be the reason for the big difference between the test results and DS? Configuration in StandBy mode?

BestRegards,

Simon

Re: S32K312-STANDBY mode supply currents problem

Senlent — Tue, 07 Nov 2023 01:57:14 GMT

Hi@Simon-Liu

I hope you already know this software tool:

https://www.nxp.com/design/software/automotive-software-and-tools/s32k-power-estimation-tool-pet:S32K-PET

For your first question:

For your second question:

1. software problems, you can refer to these routine codes to troubleshoot software code setting errors.

https://community.nxp.com/t5/S32K-Knowledge-Base/S32K3-Low-Power-Management-AN-and-demos/ta-p/1527724
2. Hardware, this is difficult to say. You have to eliminate the influence of peripheral circuits. If you have a minimal hardware system, it will be much easier to troubleshoot.

Re: S32K312-STANDBY mode supply currents problem

Simon-Liu — Thu, 09 Nov 2023 06:39:09 GMT

Hi @Senlent

I used my S32DS3.5 tool to open the routine code you gave me and reported an error, unable to view the configuration. Do you have the routine code for S32K312?

BestRegards

Simon

Re: S32K312-STANDBY mode supply currents problem

Senlent — Thu, 09 Nov 2023 07:12:03 GMT

Hi@Simon-Liu

I deleted it every time after testing, and I didn’t keep any records.

these demo base on old RTD driver, you can install the onld RTD driver then import it, the configure step is same.