Power Pins

  • VIN - this is the power pin. Since the sensor chip uses 3 VDC, we have included a voltage regulator on board that will take 3-5VDC and safely convert it down. To power the board, give it the same power as the logic level of your microcontroller - e.g. for a 5V microcontroller like Arduino, use 5V
  • 3V - this is the 3.3V output from the voltage regulator, you can grab up to 100mA from this if you like
  • GND - common ground for power and logic

I2C Logic Pins

  • SCL - I2C clock pin, connect to your microcontroller I2C clock line. This pin is level shifted so you can use 3-5V logic, and there's a 10K pullup on this pin.
  • SDA - I2C data pin, connect to your microcontroller I2C data line. This pin is level shifted so you can use 3-5V logic, and there's a 10K pullup on this pin.

  • STEMMA QT - These connectors allow you to connectors to dev boards with STEMMA QT connectors or to other things with various associated accessories
  • DO/AD0 Jumper - I2C Address pin. Pulling this pin high or bridging the solder jumper on the back will change the I2C address from 0x6A to 0x6B

SPI Logic pins:

  • SCL - This is also the SPI Clock pin / SCK, it's an input to the chip
  • SDA - this is also the Serial Data In / Microcontroller Out Sensor In / MOSI pin, for data sent from your processor to the LSM6DS33
  • DO - this is the Data Out / Microcontroller In Sensor Out / MISO pin, for data sent from the LSM6DS33 to your processor. 
  • CS - this is the Chip Select pin, drop it low to start an SPI transaction. It's an input to the chip

If you want to connect multiple LSM6DS33's to one microcontroller, have them share the SCL, SDA, and DO pins. Then assign each one a unique CS pin.

Other Pins

  • INT1 -This is the primary interrupt pin. You can setup the LSM6DS33 to pull this low when certain conditions are met such as new measurement data being available. Consult the datasheet for usage
  • I2/INT2 -This is the secondary interrupt pin. You can setup the LSM6DS33 to pull this low when certain conditions are met such as new measurement data being available. Consult the datasheet for usage
This guide was first published on Jan 20, 2020. It was last updated on Jan 20, 2020.
This page (Pinouts) was last updated on Aug 14, 2020.