Bring external Memory MX25R64/MX25R32 into deep sleep on nRF54L15

[SJahnke]

Hello,

already found a description in the Tech Docs, how to bring the external memory into deep sleep on QSPI interface: https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/test_and_optimize/optimizing/power_general.html#put_the_external_flash_into_sleep_mode_in_inactivity_periods

But is this also possible for external memory MX25R64/MX25R32 on nRF54L15.

What needs to be done to bring this one on SPI Interface into deep sleep? Is there already a description how to do this on nRF54L15?

Thanks a lot

[Simonr]

Hi

Are you able to measure the current on the SPI lines or the MX25R64 itself. Does it indeed go into the deep-power-down mode or just a sleep/disabled mode that draws more current than the dpd mode? The first step would be to find out if the current is in fact drawn by the MX25R64F here.

Best regards,

Simon