PCA9685

{
  "schema_version": 1,
  "type": "component",
  "slug": "pca9685",
  "title": "PCA9685",
  "brief": "NXP 16-channel 12-bit PWM controller, TSSOP-28. I2C, per-channel duty + phase, the servo-driver chip. Datasheet-verified.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "driver",
    "pwm",
    "led-driver",
    "servo",
    "i2c",
    "tssop-28",
    "nxp"
  ],
  "component": {
    "mpn": "PCA9685",
    "manufacturer": "NXP Semiconductors",
    "package": "TSSOP-28",
    "pin_count": 28,
    "category": "Driver",
    "subcategory": "16-channel PWM / servo driver (I2C)",
    "datasheet": "https://cdn-shop.adafruit.com/datasheets/PCA9685.pdf",
    "parts": {
      "symbol": "pca9685.kicad_sym",
      "footprint": "pca9685.kicad_mod",
      "model_3d": "pca9685-etched.glb",
      "model_3d_plain": "pca9685.glb",
      "lbr": "pca9685.lbr",
      "model_3d_step": "pca9685-etched.step",
      "model_3d_step_plain": "pca9685.step"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "A0",
        "type": "input",
        "description": "I2C-bus hardware address input bit 0. No internal pull-up; must be tied HIGH or LOW."
      },
      {
        "number": "2",
        "name": "A1",
        "type": "input",
        "description": "I2C-bus hardware address input bit 1. No internal pull-up; must be tied HIGH or LOW."
      },
      {
        "number": "3",
        "name": "A2",
        "type": "input",
        "description": "I2C-bus hardware address input bit 2. No internal pull-up; must be tied HIGH or LOW."
      },
      {
        "number": "4",
        "name": "A3",
        "type": "input",
        "description": "I2C-bus hardware address input bit 3. No internal pull-up; must be tied HIGH or LOW."
      },
      {
        "number": "5",
        "name": "A4",
        "type": "input",
        "description": "I2C-bus hardware address input bit 4. No internal pull-up; must be tied HIGH or LOW."
      },
      {
        "number": "6",
        "name": "LED0",
        "type": "output",
        "description": "LED driver channel 0. Software-selectable open-drain (25 mA sink @ 5 V) or totem-pole (25 mA sink / 10 mA source @ 5 V). Default POR state is LOW."
      },
      {
        "number": "7",
        "name": "LED1",
        "type": "output",
        "description": "LED driver channel 1. Software-selectable open-drain or totem-pole; 25 mA sink / 10 mA source at 5 V."
      },
      {
        "number": "8",
        "name": "LED2",
        "type": "output",
        "description": "LED driver channel 2. Software-selectable open-drain or totem-pole; 25 mA sink / 10 mA source at 5 V."
      },
      {
        "number": "9",
        "name": "LED3",
        "type": "output",
        "description": "LED driver channel 3. Software-selectable open-drain or totem-pole; 25 mA sink / 10 mA source at 5 V."
      },
      {
        "number": "10",
        "name": "LED4",
        "type": "output",
        "description": "LED driver channel 4. Software-selectable open-drain or totem-pole; 25 mA sink / 10 mA source at 5 V."
      },
      {
        "number": "11",
        "name": "LED5",
        "type": "output",
        "description": "LED driver channel 5. Software-selectable open-drain or totem-pole; 25 mA sink / 10 mA source at 5 V."
      },
      {
        "number": "12",
        "name": "LED6",
        "type": "output",
        "description": "LED driver channel 6. Software-selectable open-drain or totem-pole; 25 mA sink / 10 mA source at 5 V."
      },
      {
        "number": "13",
        "name": "LED7",
        "type": "output",
        "description": "LED driver channel 7. Software-selectable open-drain or totem-pole; 25 mA sink / 10 mA source at 5 V."
      },
      {
        "number": "14",
        "name": "VSS",
        "type": "power_in",
        "description": "Supply ground (0 V reference)."
      },
      {
        "number": "15",
        "name": "LED8",
        "type": "output",
        "description": "LED driver channel 8. Software-selectable open-drain or totem-pole; 25 mA sink / 10 mA source at 5 V."
      },
      {
        "number": "16",
        "name": "LED9",
        "type": "output",
        "description": "LED driver channel 9. Software-selectable open-drain or totem-pole; 25 mA sink / 10 mA source at 5 V."
      },
      {
        "number": "17",
        "name": "LED10",
        "type": "output",
        "description": "LED driver channel 10. Software-selectable open-drain or totem-pole; 25 mA sink / 10 mA source at 5 V."
      },
      {
        "number": "18",
        "name": "LED11",
        "type": "output",
        "description": "LED driver channel 11. Software-selectable open-drain or totem-pole; 25 mA sink / 10 mA source at 5 V."
      },
      {
        "number": "19",
        "name": "LED12",
        "type": "output",
        "description": "LED driver channel 12. Software-selectable open-drain or totem-pole; 25 mA sink / 10 mA source at 5 V."
      },
      {
        "number": "20",
        "name": "LED13",
        "type": "output",
        "description": "LED driver channel 13. Software-selectable open-drain or totem-pole; 25 mA sink / 10 mA source at 5 V."
      },
      {
        "number": "21",
        "name": "LED14",
        "type": "output",
        "description": "LED driver channel 14. Software-selectable open-drain or totem-pole; 25 mA sink / 10 mA source at 5 V."
      },
      {
        "number": "22",
        "name": "LED15",
        "type": "output",
        "description": "LED driver channel 15. Software-selectable open-drain or totem-pole; 25 mA sink / 10 mA source at 5 V."
      },
      {
        "number": "23",
        "name": "OE",
        "type": "input",
        "description": "Active-LOW output enable. When HIGH the LEDn outputs are programmable to logic 1, logic 0 (default at power-up), or high-impedance. Can be toggled to externally PWM/blink all outputs."
      },
      {
        "number": "24",
        "name": "A5",
        "type": "input",
        "description": "I2C-bus hardware address input bit 5. No internal pull-up; must be tied HIGH or LOW."
      },
      {
        "number": "25",
        "name": "EXTCLK",
        "type": "input",
        "description": "External clock input (50 MHz max). Replaces the internal 25 MHz oscillator when enabled; must be grounded when not used."
      },
      {
        "number": "26",
        "name": "SCL",
        "type": "input",
        "description": "I2C-bus serial clock line. Fast-mode Plus (Fm+, up to 1 MHz) compatible; requires external pull-up."
      },
      {
        "number": "27",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C-bus serial data line. Open-drain with 30 mA sink capability for driving high-capacitance buses (up to 4000 pF); requires external pull-up."
      },
      {
        "number": "28",
        "name": "VDD",
        "type": "power_in",
        "description": "Supply voltage, 2.3 V to 5.5 V. Inputs and LED outputs are 5.5 V tolerant."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://cdn-shop.adafruit.com/datasheets/PCA9685.pdf",
        "pages": 52,
        "sha256": "237d47f339cac4c3",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 28,
        "described": 28,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    }
  },
  "metadata": {
    "specs": {
      "Type": "16-channel 12-bit PWM controller",
      "Channels": "16 (independent duty + phase)",
      "Resolution": "12-bit per channel",
      "PWM frequency": "24 Hz to 1526 Hz (shared)",
      "Interface": "I2C up to 1 MHz",
      "Address pins": "6 (up to 62 on a bus)",
      "Output drive": "~10-25 mA per channel",
      "Package": "TSSOP-28"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "pca9685",
    "16 channel pwm",
    "servo driver",
    "i2c pwm controller",
    "led pwm driver"
  ],
  "discovery_pitch": "PCA9685 16-channel 12-bit I2C PWM controller (TSSOP-28) with datasheet-verified pinout, KiCad symbol/footprint/3D, and full provenance.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "pca9685.kicad_sym",
    "pca9685.kicad_mod",
    "pca9685.glb",
    "pca9685.lbr",
    "docs/hero.png",
    "docs/pca9685-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "pca9685-etched.step"
  ],
  "variants": [
    {
      "mpn": "PCA9685PW (TSSOP-28)",
      "kind": "packaging"
    },
    {
      "mpn": "PCA9685BS (HVQFN-28)",
      "kind": "packaging"
    }
  ]
}