LSM6DSMTR Taking more power on VDDIO Pin

[V.Jose]

I am using LSM6DSMTR  with a coin cell battery. I have connected the IMU with NRF52810 using a SPI line. Attached the screenshot.

When I am observing the power profiler, VDDIO is gradually taking current after the SPI communication (I have used a 100E resistor( to measure the current).

If I disconnect the VDDIO, the unit is working, but its taking power from SPI lines , and the total power consumption of NRF52810 increasing

 

[MSimo.1]

Hi. Thank you for responding to my Post. The Problem on my application was the SA0 Pin. This sets the least Bit of the I2C Address. The Datasheet says, that this pin is pulled up to vcc with R10K. Thats where my current went to. I solved the Problem by connecting SA0 to VCC and changing the I2C Address in my program.

i hope this helps you!

see page 4/66 ( below the table ) https://www.st.com/content/ccc/resource/technical/document/datasheet/group3/30/3a/4e/6b/68/16/4a/35/DM00323179/files/DM00323179.pdf/jcr:content/translations/en.DM00323179.pdf

[V.Jose]

I am using the SPI channel, so SDO is connect to MCU pin only