LIS2DW12 MISO low output voltage

[Douglas1]

Hi,

We have a LIS2DW12 and a S2-LP setup on the same PCB, both using SPI.

We have found that the LIS2DW12 has a high of 1.16V on the MISO with Vio = 3.3V.

We can see that the correct bits are sent on the MISO, the voltage is just too low for the micro to read.

We have further found that this happens when the S2-LP is not in shutdown mode (SDN = 0), as soon as we shut down the S2-LP (SDN = 1) then the LIS2DW12 works fine. In both cases the S2-LP CS remains high.

Does anyone know what might cause this problem?

Thanks in advance

Douglas