PCA9557

@@ -1,8 +1,11 @@ {+  "schema_version": 1,+  "type": "component",   "slug": "pca9557",+  "title": "PCA9557",+  "brief": "TI 8-bit I2C I/O expander with reset, HVQFN-16. Eight I/O, hardware RESET, 8 addresses, 2.3-5.5 V. Datasheet-verified.",   "version": "0.1.0",-  "type": "component",-  "description": "TI 8-bit I2C I/O expander with reset, HVQFN-16. Eight I/O, hardware RESET, 8 addresses, 2.3-5.5 V. Datasheet-verified.",+  "license": "CC-BY-SA-4.0",   "tags": [     "component",     "interface",@@ -12,6 +15,171 @@     "hvqfn-16",     "texas-instruments"   ],+  "component": {+    "mpn": "PCA9557",+    "manufacturer": "Texas Instruments",+    "package": "HVQFN-16",+    "pin_count": 16,+    "category": "Interface",+    "subcategory": "I2C I/O expander",+    "datasheet": "https://www.ti.com/lit/ds/symlink/pca9557.pdf",+    "parts": {+      "symbol": "pca9557.kicad_sym",+      "footprint": "pca9557.kicad_mod",+      "model_3d": "pca9557.glb",+      "model_3d_step": "pca9557.step",+      "lbr": "pca9557.lbr"+    },+    "distributor_links": {},+    "pins": [+      {+        "number": "1",+        "name": "A0",+        "type": "input",+        "description": "Hardware I2C address input bit 0. Tie directly to VCC or GND to program the device's I2C slave address (up to 8 devices per bus)."+      },+      {+        "number": "2",+        "name": "A1",+        "type": "input",+        "description": "Hardware I2C address input bit 1. Tie directly to VCC or GND."+      },+      {+        "number": "3",+        "name": "A2",+        "type": "input",+        "description": "Hardware I2C address input bit 2. Tie directly to VCC or GND."+      },+      {+        "number": "4",+        "name": "IO0",+        "type": "bidirectional",+        "description": "P-port I/O bit 0. High-impedance open-drain output structure; requires an external pullup to VCC when driven high. Configured as input at power-on."+      },+      {+        "number": "5",+        "name": "IO1",+        "type": "bidirectional",+        "description": "P-port I/O bit 1. Push-pull output; sinks up to 25 mA to drive LEDs directly. Input at power-on."+      },+      {+        "number": "6",+        "name": "VSS",+        "type": "power_in",+        "description": "Ground reference for supply and I/O."+      },+      {+        "number": "7",+        "name": "IO2",+        "type": "bidirectional",+        "description": "P-port I/O bit 2. Push-pull output; 25 mA sink capability. Input at power-on."+      },+      {+        "number": "8",+        "name": "IO3",+        "type": "bidirectional",+        "description": "P-port I/O bit 3. Push-pull output; 25 mA sink capability. Input at power-on."+      },+      {+        "number": "9",+        "name": "IO4",+        "type": "bidirectional",+        "description": "P-port I/O bit 4. Push-pull output; 25 mA sink capability. Input at power-on."+      },+      {+        "number": "10",+        "name": "IO5",+        "type": "bidirectional",+        "description": "P-port I/O bit 5. Push-pull output; 25 mA sink capability. Input at power-on."+      },+      {+        "number": "11",+        "name": "IO6",+        "type": "bidirectional",+        "description": "P-port I/O bit 6. Push-pull output; 25 mA sink capability. Input at power-on."+      },+      {+        "number": "12",+        "name": "IO7",+        "type": "bidirectional",+        "description": "P-port I/O bit 7. Push-pull output; 25 mA sink capability. Input at power-on."+      },+      {+        "number": "13",+        "name": "RESET",+        "type": "input",+        "description": "Active-low reset input. Asserting low reinitializes the registers and I2C/SMBus state machine. Tie to VCC through a pullup if unused."+      },+      {+        "number": "14",+        "name": "VDD",+        "type": "power_in",+        "description": "Supply voltage, 2.3 V to 5.5 V. Decouple with a 0.1 \u00b5F ceramic capacitor to GND close to the pin."+      },+      {+        "number": "15",+        "name": "SCL",+        "type": "input",+        "description": "I2C serial clock input. Requires an external pullup resistor to VCC. Supports 100 kHz standard mode and 400 kHz fast mode."+      },+      {+        "number": "16",+        "name": "SDA",+        "type": "bidirectional",+        "description": "I2C serial data line, open-drain bidirectional. Requires an external pullup resistor to VCC."+      }+    ],+    "provenance": {+      "extractor": "ds2sf",+      "datasheet": {+        "url": "https://www.ti.com/lit/ds/symlink/pca9557.pdf",+        "pages": 47,+        "sha256": "d55cbe207fbcb26d",+        "source_tier": "mfr"+      },+      "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"+    }+  },+  "metadata": {+    "specs": {+      "Type": "8-bit I2C I/O expander",+      "Interface": "I2C (up to 400 kHz)",+      "I/O": "8 pins (IO0-IO7)",+      "Reset": "Hardware RESET input",+      "Polarity": "Per-pin inversion register",+      "Addresses": "8 (A0-A2)",+      "Supply": "2.3-5.5 V",+      "Package": "HVQFN-16"+    }+  },+  "sections": [+    "hero",+    "viewers",+    "readme",+    "breadcrumbs",+    "info"+  ],+  "discovery_triggers": [+    "pca9557",+    "8-bit io expander",+    "i2c gpio with reset",+    "add gpio over i2c"+  ],+  "discovery_pitch": "TI PCA9557 8-bit I2C I/O expander with reset (HVQFN-16) with datasheet-verified pinout, KiCad symbol/footprint/3D, and full provenance.",+  "author": {+    "name": "Ray",+    "email": "[email protected]"+  },   "dependencies": {},   "hero": {     "type": "image",@@ -29,10 +197,5 @@     "docs/pca9557-datasheet.pdf",     "viewers/symbol.html",     "viewers/footprint.html"-  ],-  "visibility": "public",-  "author": {-    "name": "Ray",-    "email": "[email protected]"-  }+  ] }\ No newline at end of file