{
  "id": "pcf8574-expander",
  "name": "PCF8574 I/O expander module",
  "category": "output",
  "pins": [
    {
      "name": "GND",
      "role": "ground"
    },
    {
      "name": "VCC",
      "role": "power"
    },
    {
      "name": "SDA",
      "role": "i2c_sda"
    },
    {
      "name": "SCL",
      "role": "i2c_scl"
    },
    {
      "name": "INT",
      "role": "int",
      "notes": "Interrupt output, optional"
    },
    {
      "name": "P0",
      "role": "passive",
      "notes": "Expander I/O pins go to your LEDs or buttons, not to the ESP32"
    },
    {
      "name": "P1",
      "role": "passive"
    },
    {
      "name": "P2",
      "role": "passive"
    },
    {
      "name": "P3",
      "role": "passive"
    },
    {
      "name": "P4",
      "role": "passive"
    },
    {
      "name": "P5",
      "role": "passive"
    },
    {
      "name": "P6",
      "role": "passive"
    },
    {
      "name": "P7",
      "role": "passive"
    }
  ],
  "bus": "i2c",
  "addresses": [
    "0x20",
    "0x21",
    "0x22",
    "0x23",
    "0x24",
    "0x25",
    "0x26",
    "0x27",
    "0x38",
    "0x39",
    "0x3A",
    "0x3B",
    "0x3C",
    "0x3D",
    "0x3E",
    "0x3F"
  ],
  "voltage": "3.3-5",
  "pullupsOnBoard": true,
  "model": {
    "shape": "module",
    "size": [
      40,
      20,
      5
    ],
    "color": "#1F4FA8"
  },
  "keywords": [
    "pcf8574",
    "io expander",
    "i2c expander",
    "gpio",
    "espansore"
  ],
  "sources": [
    {
      "title": "NXP PCF8574 / PCF8574A datasheet",
      "section": "Address 0x20 to 0x27 (PCF8574) or 0x38 to 0x3F (PCF8574A) via A0-A2"
    }
  ]
}