topic Re: S32K3 STANDBY MODE in S32K

S32K3 STANDBY MODE

Jon123 — Tue, 02 Apr 2024 05:40:41 GMT

Chip: S32K3 series.
Phenomenon: now test pin PTA29, connect pull-down resistance, before hibernation, open pin hold, test pin level, high level; after sleep, test pin level, high level; test pin level, low level after waking up before pin initialization.
Check the register and find that after waking up, the pin hold register has been cleared, that is, off the pin hold. Now you want to keep the pin high after waking up. How to configure it?thank you.

Re: S32K3 STANDBY MODE

danielmartynek — Thu, 04 Apr 2024 09:05:07 GMT

Hi @Jon123,

Refer to the document in S32K3_low_power_management.zip

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

Chapter 7. Pad keeping in Standby mode

Regards,

Daniel

Re: S32K3 STANDBY MODE

Jon123 — Sun, 07 Apr 2024 01:28:28 GMT

Maybe my question is expressed incorrectly, I'm sorry, I mean I can keep the pin in the pin state under standby mode, and I found that when the chip is awakened, the pin hold register will be cleared, but I hope that when the chip wakes up, the pin hold state is still on hold state, can this situation be realized?

Re: S32K3 STANDBY MODE

danielmartynek — Tue, 09 Apr 2024 07:11:05 GMT

Hi @Jon123,

The MCU goes through a system reset when the MCU exits the Standby mode.

The registers will always be cleared to their specified reset values.

Regards,

Daniel