TM1668

{
  "schema_version": 1,
  "type": "component",
  "slug": "tm1668",
  "title": "TM1668",
  "brief": "TM Shenzhen Titan Micro Elec LED Display Drivers, SSOP-24-208mil. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "led-drv",
    "tm1668"
  ],
  "component": {
    "mpn": "TM1668",
    "manufacturer": "TM Shenzhen Titan Micro Elec",
    "package": "SSOP-24-208mil",
    "pin_count": 24,
    "category": "LED-drv",
    "subcategory": "LED Display Drivers",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/3e857c3d565c4bda89816bdebc801242.pdf",
    "parts": {
      "symbol": "tm1668.kicad_sym",
      "footprint": "tm1668.kicad_mod",
      "model_3d": "tm1668-etched.glb",
      "model_3d_plain": "tm1668.glb",
      "model_3d_step": "tm1668-etched.step",
      "model_3d_step_plain": "tm1668.step",
      "lbr": "tm1668.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "DIO",
        "type": "bidirectional",
        "description": "Serial data input/output. Data is shifted in/out LSB-first on the rising edge of CLK. Output is open-drain (N-channel); requires an external pull-up resistor (recommended 10 kΩ to VCC) when reading key data. Read data on the rising CLK edge for stability."
      },
      {
        "number": "2",
        "name": "CLK",
        "type": "input",
        "description": "Serial clock input. Data on DIO is latched on the rising edge. Ignored while STB is high."
      },
      {
        "number": "3",
        "name": "STB",
        "type": "input",
        "description": "Chip select / strobe. Serial interface is initialized on a rising or falling edge; the first byte after a falling edge is treated as a command. When STB goes high mid-transfer, the current operation is terminated and CLK is ignored."
      },
      {
        "number": "4",
        "name": "K1",
        "type": "input",
        "description": "Key scan data input row 1. Data on this pin is latched at the end of each display cycle for the 10x2 key matrix."
      },
      {
        "number": "5",
        "name": "K2",
        "type": "input",
        "description": "Key scan data input row 2. Data on this pin is latched at the end of each display cycle for the 10x2 key matrix."
      },
      {
        "number": "6",
        "name": "VDD",
        "type": "power_in",
        "description": "Logic supply, 5 V ±10%. Bypass with a decoupling capacitor to GND."
      },
      {
        "number": "7",
        "name": "SEG1/KS1",
        "type": "output",
        "description": "Segment driver output 1 (P-channel open-drain, high-voltage). Also used as key-scan strobe KS1 for the keyboard matrix."
      },
      {
        "number": "8",
        "name": "SEG2/KS2",
        "type": "output",
        "description": "Segment driver output 2 (P-channel open-drain). Also used as key-scan strobe KS2."
      },
      {
        "number": "9",
        "name": "SEG3/KS3",
        "type": "output",
        "description": "Segment driver output 3 (P-channel open-drain). Also used as key-scan strobe KS3."
      },
      {
        "number": "10",
        "name": "SEG4/KS4",
        "type": "output",
        "description": "Segment driver output 4 (P-channel open-drain). Also used as key-scan strobe KS4."
      },
      {
        "number": "11",
        "name": "SEG5/KS5",
        "type": "output",
        "description": "Segment driver output 5 (P-channel open-drain). Also used as key-scan strobe KS5."
      },
      {
        "number": "12",
        "name": "SEG6/KS6",
        "type": "output",
        "description": "Segment driver output 6 (P-channel open-drain). Also used as key-scan strobe KS6."
      },
      {
        "number": "13",
        "name": "SEG7/KS7",
        "type": "output",
        "description": "Segment driver output 7 (P-channel open-drain). Also used as key-scan strobe KS7."
      },
      {
        "number": "14",
        "name": "SEG8/KS8",
        "type": "output",
        "description": "Segment driver output 8 (P-channel open-drain). Also used as key-scan strobe KS8."
      },
      {
        "number": "15",
        "name": "SEG9/KS9",
        "type": "output",
        "description": "Segment driver output 9 (P-channel open-drain). Also used as key-scan strobe KS9."
      },
      {
        "number": "16",
        "name": "SEG10/KS10",
        "type": "output",
        "description": "Segment driver output 10 (P-channel open-drain). Also used as key-scan strobe KS10."
      },
      {
        "number": "17",
        "name": "SEG12/GRID7",
        "type": "output",
        "description": "Segment 12 driver output when in 10-grid mode, or grid 7 driver (N-channel open-drain, high-voltage) when configured for additional grids."
      },
      {
        "number": "18",
        "name": "SEG13/GRID6",
        "type": "output",
        "description": "Segment 13 driver output, or grid 6 driver (N-channel open-drain), selected by display mode."
      },
      {
        "number": "19",
        "name": "SEG14/GRID5",
        "type": "output",
        "description": "Segment 14 driver output, or grid 5 driver (N-channel open-drain), selected by display mode."
      },
      {
        "number": "20",
        "name": "GRID4",
        "type": "output",
        "description": "Grid driver output 4 (N-channel open-drain, high-voltage). Sinks current for the corresponding digit/grid line."
      },
      {
        "number": "21",
        "name": "GRID3",
        "type": "output",
        "description": "Grid driver output 3 (N-channel open-drain)."
      },
      {
        "number": "22",
        "name": "GND",
        "type": "power_in",
        "description": "Logic ground. Connect to system ground."
      },
      {
        "number": "23",
        "name": "GRID2",
        "type": "output",
        "description": "Grid driver output 2 (N-channel open-drain)."
      },
      {
        "number": "24",
        "name": "GRID1",
        "type": "output",
        "description": "Grid driver output 1 (N-channel open-drain)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/3e857c3d565c4bda89816bdebc801242.pdf",
        "pages": 21,
        "sha256": "ce4f70a05bd823a1",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 24,
        "described": 24,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "tm1668.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.8,
          8.2,
          2.1
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "77dd0a1fc7e70e9eda1bfde9dde937dc6e391803cff9978790523c850c85a21d",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tm1668-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.8,
          8.2,
          2.1
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "4ff108c31153f6b08724d74f4ae380bf8b80aa1c4d796a7d4b57cec3f4e96610",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "TM Shenzhen Titan Micro Elec",
      "Package": "SSOP-24-208mil",
      "Category": "LED-drv",
      "Pins": "24"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "tm1668"
  ],
  "discovery_pitch": "TM1668 (TM Shenzhen Titan Micro Elec) 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",
    "tm1668.kicad_sym",
    "tm1668.kicad_mod",
    "tm1668.glb",
    "tm1668.step",
    "tm1668.lbr",
    "docs/hero.png",
    "docs/tm1668-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-25T10:56:13.105Z"
}