ICM7555M

{
  "schema_version": 1,
  "type": "component",
  "slug": "icm7555m",
  "title": "ICM7555M",
  "brief": "HGSEMI Timers / Clock Oscillators, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "rtc",
    "icm7555m"
  ],
  "component": {
    "mpn": "ICM7555M",
    "manufacturer": "HGSEMI",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "RTC",
    "subcategory": "Timers / Clock Oscillators",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/ec2ce94f7f6446de35076e3d51997e7e.pdf",
    "parts": {
      "symbol": "icm7555m.kicad_sym",
      "footprint": "icm7555m.kicad_mod",
      "model_3d": "icm7555m-etched.glb",
      "model_3d_plain": "icm7555m.glb",
      "model_3d_step": "icm7555m-etched.step",
      "model_3d_step_plain": "icm7555m.step",
      "lbr": "icm7555m.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device. Connect to the negative supply rail (0V)."
      },
      {
        "number": "2",
        "name": "TRIG",
        "type": "input",
        "description": "Trigger input. A negative-going pulse below 1/3 VDD initiates the timing cycle, setting the output high and starting the timing capacitor discharge sequence."
      },
      {
        "number": "3",
        "name": "OUT",
        "type": "output",
        "description": "Timer output. CMOS push-pull output that swings from near GND to near VDD, capable of sourcing/sinking modest load currents."
      },
      {
        "number": "4",
        "name": "RESET",
        "type": "input",
        "description": "Active-low reset input. Pulling this pin below approximately 0.7V forces the output low and resets the internal flip-flop regardless of trigger state. Tie to VDD if unused."
      },
      {
        "number": "5",
        "name": "CV",
        "type": "input",
        "description": "Control Voltage input. Provides access to the internal 2/3 VDD reference node, allowing modulation of the threshold levels. Typically bypassed to GND with a 10nF capacitor when unused."
      },
      {
        "number": "6",
        "name": "THRES",
        "type": "input",
        "description": "Threshold input. When the voltage on this pin rises above 2/3 VDD, the internal flip-flop resets, driving the output low and initiating capacitor discharge."
      },
      {
        "number": "7",
        "name": "DISCH",
        "type": "output",
        "description": "Discharge output. Open-drain N-channel output used to discharge the external timing capacitor when the internal flip-flop is reset."
      },
      {
        "number": "8",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive supply voltage input. Operating range 2V to 18V."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/ec2ce94f7f6446de35076e3d51997e7e.pdf",
        "pages": 11,
        "sha256": "e95f11bad730cc7b",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "icm7555m-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          4.9,
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        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d3293c5a5beed11a016c1e75e18326ccbe5ed19f06ffd8ea30e9fef086d46d52",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "HGSEMI",
      "Package": "SOP-8",
      "Category": "RTC",
      "Pins": "8"
    }
  },
  "variants": [
    {
      "mpn": "ICM7555MM",
      "kind": "packaging"
    }
  ],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "icm7555m"
  ],
  "discovery_pitch": "ICM7555M (HGSEMI) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
    "icm7555m.kicad_sym",
    "icm7555m.kicad_mod",
    "icm7555m.glb",
    "icm7555m.step",
    "icm7555m.lbr",
    "docs/hero.png",
    "docs/icm7555m-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T22:26:51.588Z"
}