STK8321

{
  "schema_version": 1,
  "type": "component",
  "slug": "stk8321",
  "title": "STK8321",
  "brief": "SENSORTEK Attitude Sensor/Gyroscope, LGA-12(2x2). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "sensor",
    "stk8321"
  ],
  "component": {
    "mpn": "STK8321",
    "manufacturer": "SENSORTEK",
    "package": "LGA-12(2x2)",
    "pin_count": 12,
    "category": "Sensor",
    "subcategory": "Attitude Sensor/Gyroscope",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/48575128cee3ac8c660b8cdd41f11790.pdf",
    "parts": {
      "symbol": "stk8321.kicad_sym",
      "footprint": "stk8321.kicad_mod",
      "model_3d": "stk8321-etched.glb",
      "model_3d_plain": "stk8321.glb",
      "model_3d_step": "stk8321-etched.step",
      "model_3d_step_plain": "stk8321.step",
      "lbr": "stk8321.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "SA0/SDO",
        "type": "bidirectional",
        "description": "In I2C mode, selects the 7-bit slave address (SA0=1 → 0x1F, SA0=0 → 0x0F). In 4-wire SPI mode, serves as the Serial Data Output (SDO); not connected in 3-wire SPI mode (recommended to pull SDO up to VDDIO or down to GND via 10 kΩ)."
      },
      {
        "number": "2",
        "name": "SDA/SDI/SDIO",
        "type": "bidirectional",
        "description": "Serial data. Open-drain SDA in I2C mode, SDI (data input) in 4-wire SPI, bidirectional SDIO in 3-wire SPI. Requires external pull-up to VDDIO when used as I2C SDA."
      },
      {
        "number": "3",
        "name": "VDDIO",
        "type": "power_in",
        "description": "Digital interface supply voltage. Operating range 1.62 V to 3.6 V (typ 2.6 V). Decouple with 0.1 µF to GNDIO."
      },
      {
        "number": "4",
        "name": "RES",
        "type": "input",
        "description": "Reserved. Recommended to tie to GND."
      },
      {
        "number": "5",
        "name": "INT1",
        "type": "output",
        "description": "Programmable interrupt output 1. Can be configured push-pull or open-drain, active-high or active-low (via INTCFG1 0x20). Any interrupt source (new data, any-motion/slope, significant motion, FIFO watermark/full) can be routed here through INTMAP2 (0x1A)."
      },
      {
        "number": "6",
        "name": "INT2",
        "type": "output",
        "description": "Programmable interrupt output 2. Same configurability as INT1 (push-pull/open-drain, active polarity); independent interrupt-source routing via INTMAP2."
      },
      {
        "number": "7",
        "name": "VS",
        "type": "power_in",
        "description": "Analog/core supply voltage. Operating range 1.7 V to 3.6 V (typ 2.6 V). Decouple with 10 µF (Cs) to GND close to the device."
      },
      {
        "number": "8",
        "name": "GNDIO",
        "type": "power_in",
        "description": "Digital interface ground. Must be connected to ground; return path for VDDIO."
      },
      {
        "number": "9",
        "name": "GND",
        "type": "power_in",
        "description": "Analog/core ground. Must be connected to ground; return path for VS."
      },
      {
        "number": "10",
        "name": "/CS",
        "type": "input",
        "description": "Interface-select and SPI chip-select. Tie high (to VDDIO) to enable I2C mode; drive low to enable SPI mode and select the device for a SPI transaction."
      },
      {
        "number": "11",
        "name": "NC",
        "type": "unconnected",
        "description": "Not internally connected. Leave floating or tie to ground."
      },
      {
        "number": "12",
        "name": "SCL/SCK",
        "type": "input",
        "description": "Serial clock. Open-drain SCL in I2C mode (external pull-up to VDDIO required, up to 400 kHz Fast Mode). SCK in SPI mode (up to 8 MHz, CPOL/CPHA 00 or 11 auto-detected on /CS falling edge)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/48575128cee3ac8c660b8cdd41f11790.pdf",
        "pages": 38,
        "sha256": "34fa58754c0eb800",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 12,
        "described": 12,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "stk8321.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.0,
          2.0,
          1.025
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "5e6c16287491528f89c09590e0d5dace14debf478226f74b45504eb906119145",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "stk8321-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.0,
          2.0,
          1.025
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "cb89a50fd1f0192b803dbb670abfa988af175ef3413367650d959aa46523b708",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "SENSORTEK",
      "Package": "LGA-12(2x2)",
      "Category": "Sensor",
      "Pins": "12"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "stk8321"
  ],
  "discovery_pitch": "STK8321 (SENSORTEK) 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",
    "stk8321.kicad_sym",
    "stk8321.kicad_mod",
    "stk8321.glb",
    "stk8321.step",
    "stk8321.lbr",
    "docs/hero.png",
    "docs/stk8321-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "stk8321-etched.step"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-25T08:36:18.833Z"
}