topic Re: S32K324 standby mode in S32K

S32K324 standby mode

glacierm — Wed, 22 Feb 2023 00:51:09 GMT

Hi,

I have some questions about standby mode of S32K324.

The background is system required MCU to stay in standby mode with some IO keeping the state when ECU enter into Sleep mode.

1. The user manual specify the "Pad Keeping" feature, how to find out which IO could support this feature?

2. How to get the information whether MCU undergo POR or waken up from standby mode?

3. During transition between Run mode and Standby mode, whether there was anything need to be taken care of, since it is not the standard function defined in the MCAL, if NXP have demo software for reference?

Thanks！

Re: S32K324 standby mode

Senlent — Wed, 22 Feb 2023 06:20:14 GMT

Hi@glacierm

1.The Standby domain pads can have pad keeping enabled or disabled based on pad availability in Standby mode.

(I guess that all IOs have the pad keeping feature, which can be enabled on the premise that it belongs to the Standby domain)

2. S32K3xx低功耗获取唤醒源

3.you can refer to this post.

S32K3 Low Power Management AN and demos

Re: S32K324 standby mode

glacierm — Wed, 22 Feb 2023 10:57:49 GMT

Hi @Senlent ,

Thanks for your reply.

1. What's the scope of Standby domain ?

2. Regarding to peripherals, whether they can be configured to keep active or not, what about the current consumption?

Re: S32K324 standby mode

Senlent — Thu, 23 Feb 2023 02:36:44 GMT

Hi@glacierm

You can find these info in S32K3XXRM.

1.Chapter:Power Management

Senlent_0-1677119031218.png

2.Chapter:Chip Power domain partitioning

•FIRC •FXOSC •MC_RGM\

•DCM •WKPU •PIT_0 (RTI)•LPCMP_[0:2]•PMC•SIRC

•SXOSC •RTC• SWT_0•DCF clients