Power consumption reduction from S32K to MC33772 on MOSI line

[surya_phaniteja]

Hi,

We are using S32K148 Microcontroller with MC33772B Battery Car Controller. There is a SPI Communication between Main Controller and BCC. Currently we have observed when the MCU goes to VLPS mode, there is some current consumption from MCU to BCC on MOSI Pin.

Can you please suggest me how can i reduce the power consumption on the MOSI Line during the Sleep mode? Is it possible to write data from MCU to BCC using port Module API's?

[surya_phaniteja]

Hi Daniel,

Thanks for the reply. I will try with above suggestion

[danielmartynek]

Hi,

Please take a look at this thread:

https://community.nxp.com/t5/S32K/S32K148-PTB27-LPSPI2-SOUT-alway-high-when-SPI-Channel-is-no/m-p/12...

The MOSI pin can be tristated between transfers.

Regards,

Daniel