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BMI055

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Bosch Sensortec Attitude Sensor/Gyroscope, LGA-16(3x4.5). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Contents

README

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BMI055

Bosch Sensortec · Attitude Sensor/Gyroscope · LGA-16(3x4.5)

BMI055 from Bosch Sensortec, in a LGA-16(3x4.5). Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 INT2 output Accelerometer interrupt pin #2. Digital output; programmable push-pull or open-drain, active level configurable. If not used, leave disconnected (DNC).
2 NC unconnected Not connected internally. Datasheet connection diagrams tie this pin to GND.
3 VDD power_in Main analog and digital domain power supply. Operating range 2.4 V to 3.6 V; absolute max 4.25 V. Decouple with a bypass capacitor to GND close to the pin.
4 GNDA power_in Analog domain ground. Connect to the system ground plane.
5 CSB2 input Gyroscope SPI chip-select (active-low). In I²C mode this pin is not used and must be left floating (DNC).
6 GNDIO power_in Digital I/O ground return. Connect to the system ground plane.
7 PS input Protocol select input. Tie to GND for SPI interface mode, or tie directly to VDDIO for I²C mode. Must be a solid electrical connection for reliable protocol selection.
8 SCx input Serial clock: SPI SCK in SPI 4W/3W mode, I²C SCL in I²C mode. Digital input driven by the host.
9 SDx bidirectional Serial data I/O. SPI 4W: SDI (data in). SPI 3W: SDA (bidirectional). I²C: SDA (bidirectional).
10 SDO2 bidirectional Gyroscope SPI serial data out (SPI 4-wire). In I²C mode this pin selects the gyroscope I²C address (tie to GND for default address). In SPI 3-wire mode leave floating (DNC).
11 VDDIO power_in Digital I/O supply voltage. Operating range 1.2 V to 3.6 V; absolute max 4.25 V. May be powered independently of VDD.
12 INT3 bidirectional Gyroscope interrupt pin #1. Digital I/O; primarily a motion-triggered interrupt output but can also serve as an external wake-up trigger input in some power modes. If not used, leave disconnected (DNC).
13 INT4 bidirectional Gyroscope interrupt pin #2. Digital I/O; primarily a motion-triggered interrupt output but can also serve as an external wake-up trigger input in some power modes. If not used, leave disconnected (DNC).
14 CSB1 input Accelerometer SPI chip-select (active-low). In I²C mode this pin is not used and must be left floating (DNC).
15 SDO1 bidirectional Accelerometer SPI serial data out (SPI 4-wire). In I²C mode this pin selects the accelerometer I²C address (tie to GND for default address). In SPI 3-wire mode leave floating (DNC).
16 INT1 output Accelerometer interrupt pin #1. Digital output; programmable push-pull or open-drain, active level configurable. If not used, leave disconnected (DNC).

Key specifications

Parameter Value
Manufacturer Bosch Sensortec
Package LGA-16(3x4.5)
Category Sensor
Pins 16

CAD (KiCad official)

  • Symbol: BMI055
  • Footprint: Package_LGA:Bosch_LGA-16_4.5x3mm_P0.5mm_LayoutBorder7x1y_ClockwisePinNumbering
  • 3D model: LGA-16(3x4.5) (KiCad packages3D, STEP)
  • 3D model files: bmi055-etched.step / bmi055-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bmi055.step / bmi055.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Bosch Sensortec datasheet (149 pp, sha256 64ced53ae5be693b, retrieved 2026-08-17, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF