Low power and Doze Mode question in S32K

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Low power and Doze Mode question in S32K

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aiguo_sun
Contributor I

In S32K RM,I found these LPSPI/LPUART/LPI2C peripherals. I know LP stand for Low Power,but I did not understand what is the difference between LPSPI and normal SPI?

Also there is 'DOZEN' in the register of LPSPI(also LPI2C/LPSPI/FlexIO),

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What does Doze mode mean?

B.R.

Terry Sun

2 Replies

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victorjimenez
NXP TechSupport
NXP TechSupport

Hello Terry Sun,

Regarding your questions please see my comments below: 

What is the difference between LPSPI and normal SPI?

There are two important points of the Low Powe peripherals comparing to the standard peripherals: 

  • The LP modules are designed to use little CPU overhead.
  • The LP modules can continue operating in stop modes if an appropriate clock is available.

What does Doze mode mean?

Doze mode is like stop mode for the modules. For example, for the LPSPI, the DOZEN bit by default is zero, this means that if you send the MCU to a stop mode, the module will continue working as long as it has an appropriate clock. If you set the DOZEN bit and you send the module to a stop mode, the module won't work. 


Have a great day,
TIC

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1,124 Views
aiguo_sun
Contributor I

Thanks very much!

B.R.

Terry Sun

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