BMI055

{
  "schema_version": 1,
  "type": "component",
  "slug": "bmi055",
  "title": "BMI055",
  "brief": "Bosch Sensortec Attitude Sensor/Gyroscope, LGA-16(3x4.5). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "sensor",
    "bmi055"
  ],
  "component": {
    "mpn": "BMI055",
    "manufacturer": "Bosch Sensortec",
    "package": "LGA-16(3x4.5)",
    "pin_count": 16,
    "category": "Sensor",
    "subcategory": "Attitude Sensor/Gyroscope",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/581634f34cf94ece9b9b36bc78692541.pdf",
    "parts": {
      "symbol": "bmi055.kicad_sym",
      "footprint": "bmi055.kicad_mod",
      "model_3d": "bmi055-etched.glb",
      "model_3d_plain": "bmi055.glb",
      "model_3d_step": "bmi055-etched.step",
      "model_3d_step_plain": "bmi055.step",
      "lbr": "bmi055.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "INT2",
        "type": "output",
        "description": "Accelerometer interrupt pin #2. Digital output; programmable push-pull or open-drain, active level configurable. If not used, leave disconnected (DNC)."
      },
      {
        "number": "2",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected internally. Datasheet connection diagrams tie this pin to GND."
      },
      {
        "number": "3",
        "name": "VDD",
        "type": "power_in",
        "description": "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."
      },
      {
        "number": "4",
        "name": "GNDA",
        "type": "power_in",
        "description": "Analog domain ground. Connect to the system ground plane."
      },
      {
        "number": "5",
        "name": "CSB2",
        "type": "input",
        "description": "Gyroscope SPI chip-select (active-low). In I²C mode this pin is not used and must be left floating (DNC)."
      },
      {
        "number": "6",
        "name": "GNDIO",
        "type": "power_in",
        "description": "Digital I/O ground return. Connect to the system ground plane."
      },
      {
        "number": "7",
        "name": "PS",
        "type": "input",
        "description": "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."
      },
      {
        "number": "8",
        "name": "SCx",
        "type": "input",
        "description": "Serial clock: SPI SCK in SPI 4W/3W mode, I²C SCL in I²C mode. Digital input driven by the host."
      },
      {
        "number": "9",
        "name": "SDx",
        "type": "bidirectional",
        "description": "Serial data I/O. SPI 4W: SDI (data in). SPI 3W: SDA (bidirectional). I²C: SDA (bidirectional)."
      },
      {
        "number": "10",
        "name": "SDO2",
        "type": "bidirectional",
        "description": "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)."
      },
      {
        "number": "11",
        "name": "VDDIO",
        "type": "power_in",
        "description": "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."
      },
      {
        "number": "12",
        "name": "INT3",
        "type": "bidirectional",
        "description": "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)."
      },
      {
        "number": "13",
        "name": "INT4",
        "type": "bidirectional",
        "description": "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)."
      },
      {
        "number": "14",
        "name": "CSB1",
        "type": "input",
        "description": "Accelerometer SPI chip-select (active-low). In I²C mode this pin is not used and must be left floating (DNC)."
      },
      {
        "number": "15",
        "name": "SDO1",
        "type": "bidirectional",
        "description": "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)."
      },
      {
        "number": "16",
        "name": "INT1",
        "type": "output",
        "description": "Accelerometer interrupt pin #1. Digital output; programmable push-pull or open-drain, active level configurable. If not used, leave disconnected (DNC)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/581634f34cf94ece9b9b36bc78692541.pdf",
        "pages": 149,
        "sha256": "64ced53ae5be693b",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 16,
        "described": 16,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "bmi055.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.5,
          3.0,
          0.95
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "dc46c314367f4c73b0b11e3d6c0a66760f47f68d2defdbf2fb7b890dc2e8ac91",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bmi055-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.5,
          3.0,
          0.95
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "ed2eaa94e0c66dda7edf5d78392ae51861f3f2a58236e2a6d67a73fc5b1e4eb3",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Bosch Sensortec",
      "Package": "LGA-16(3x4.5)",
      "Category": "Sensor",
      "Pins": "16"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "bmi055"
  ],
  "discovery_pitch": "BMI055 (Bosch Sensortec) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "bmi055.kicad_sym",
    "bmi055.kicad_mod",
    "bmi055.glb",
    "bmi055.step",
    "bmi055.lbr",
    "docs/hero.png",
    "docs/bmi055-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "bmi055-etched.step"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T17:59:26.721Z"
}