TM1622B

{
  "schema_version": 1,
  "type": "component",
  "slug": "tm1622b",
  "title": "TM1622B",
  "brief": "TM Shenzhen Titan Micro Elec LCD Drivers, LQFP-44(10x10). Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "led drivers",
    "tm1622b",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "TM1622B",
    "manufacturer": "TM Shenzhen Titan Micro Elec",
    "package": "LQFP-44(10x10)",
    "pin_count": 44,
    "category": "LED Drivers",
    "subcategory": "LCD Drivers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590440894282162176",
    "parts": {
      "symbol": "tm1622b.kicad_sym",
      "footprint": "tm1622b.kicad_mod",
      "model_3d": "tm1622b-hero.glb",
      "model_3d_plain": "tm1622b-etched.glb",
      "model_3d_step": "tm1622b-etched.step",
      "model_3d_step_plain": "tm1622b.step",
      "lbr": "tm1622b.lbr"
    },
    "distributor_links": {
      "lcsc": "C5174671"
    },
    "distributor_check": {
      "checked_at": "2026-10-21T19:43:50Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "CS",
        "type": "input",
        "description": "Chip Select signal; CS high disables read/write data or commands and resets serial interface; CS low enables normal read/write operations"
      },
      {
        "number": "2",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected"
      },
      {
        "number": "3",
        "name": "RD",
        "type": "input",
        "description": "READ mode clock input; data from display memory is written to DATA line on RD falling edge and latched on next RD rising edge"
      },
      {
        "number": "4",
        "name": "WR",
        "type": "input",
        "description": "WRITE mode clock input; data on DATA line is written to TM1622B on WR rising edge"
      },
      {
        "number": "5",
        "name": "DATA",
        "type": "bidirectional",
        "description": "Serial data input/output for command and display memory access"
      },
      {
        "number": "6",
        "name": "VSS",
        "type": "power_in",
        "description": "System ground reference"
      },
      {
        "number": "7",
        "name": "OSCI",
        "type": "input",
        "description": "External 32 KHz frequency source input; float this pin if using internal RC oscillator"
      },
      {
        "number": "8",
        "name": "VDD",
        "type": "power_in",
        "description": "Chip power supply input, operating range 2.4 to 5.2 V"
      },
      {
        "number": "9",
        "name": "VLCD",
        "type": "input",
        "description": "LCD bias voltage input; must be less than or equal to VDD"
      },
      {
        "number": "10",
        "name": "IRQ",
        "type": "tri_state",
        "description": "Time base or watchdog timer overflow flag output; NMOS open-drain output requires external 10 kΩ pull-up resistor"
      },
      {
        "number": "11",
        "name": "BZ",
        "type": "output",
        "description": "Buzzer output driver (positive phase); outputs differential drive signal at 2 kHz or 4 kHz"
      },
      {
        "number": "12",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected"
      },
      {
        "number": "13",
        "name": "BZ",
        "type": "output",
        "description": "Complementary buzzer output driver (negative phase); outputs differential drive signal at 2 kHz or 4 kHz"
      },
      {
        "number": "14",
        "name": "T1",
        "type": "input",
        "description": "Bias adjustment input; not recommended for normal operation"
      },
      {
        "number": "15",
        "name": "T2",
        "type": "input",
        "description": "Bias adjustment input; not recommended for normal operation"
      },
      {
        "number": "16",
        "name": "T3",
        "type": "input",
        "description": "Bias adjustment input; not recommended for normal operation"
      },
      {
        "number": "17",
        "name": "COM0",
        "type": "output",
        "description": "LCD COM driver output; part of 1/4 bias, 8 duty cycle 32×8 LCD display interface"
      },
      {
        "number": "18",
        "name": "COM1",
        "type": "output",
        "description": "LCD COM driver output; part of 1/4 bias, 8 duty cycle 32×8 LCD display interface"
      },
      {
        "number": "19",
        "name": "COM2",
        "type": "output",
        "description": "LCD COM driver output; part of 1/4 bias, 8 duty cycle 32×8 LCD display interface"
      },
      {
        "number": "20",
        "name": "COM3",
        "type": "output",
        "description": "LCD COM driver output; part of 1/4 bias, 8 duty cycle 32×8 LCD display interface"
      },
      {
        "number": "21",
        "name": "COM4",
        "type": "output",
        "description": "LCD COM driver output; part of 1/4 bias, 8 duty cycle 32×8 LCD display interface"
      },
      {
        "number": "22",
        "name": "COM5",
        "type": "output",
        "description": "LCD COM driver output; part of 1/4 bias, 8 duty cycle 32×8 LCD display interface"
      },
      {
        "number": "23",
        "name": "COM6",
        "type": "output",
        "description": "LCD COM driver output; part of 1/4 bias, 8 duty cycle 32×8 LCD display interface"
      },
      {
        "number": "24",
        "name": "COM7",
        "type": "output",
        "description": "LCD COM driver output; part of 1/4 bias, 8 duty cycle 32×8 LCD display interface"
      },
      {
        "number": "25",
        "name": "SEG0",
        "type": "output",
        "description": "LCD SEG driver output for segment 0; source/sink current up to 430 μA"
      },
      {
        "number": "26",
        "name": "SEG1",
        "type": "output",
        "description": "LCD SEG driver output for segment 1; source/sink current up to 430 μA"
      },
      {
        "number": "27",
        "name": "SEG2",
        "type": "output",
        "description": "LCD SEG driver output for segment 2; source/sink current up to 430 μA"
      },
      {
        "number": "28",
        "name": "SEG3",
        "type": "output",
        "description": "LCD SEG driver output for segment 3; source/sink current up to 430 μA"
      },
      {
        "number": "29",
        "name": "SEG4",
        "type": "output",
        "description": "LCD SEG driver output for segment 4; source/sink current up to 430 μA"
      },
      {
        "number": "30",
        "name": "SEG5",
        "type": "output",
        "description": "LCD SEG driver output for segment 5; source/sink current up to 430 μA"
      },
      {
        "number": "31",
        "name": "SEG6",
        "type": "output",
        "description": "LCD SEG driver output for segment 6; source/sink current up to 430 μA"
      },
      {
        "number": "32",
        "name": "SEG7",
        "type": "output",
        "description": "LCD SEG driver output for segment 7; source/sink current up to 430 μA"
      },
      {
        "number": "33",
        "name": "SEG8",
        "type": "output",
        "description": "LCD SEG driver output for segment 8; source/sink current up to 430 μA"
      },
      {
        "number": "34",
        "name": "SEG9",
        "type": "output",
        "description": "LCD SEG driver output for segment 9; source/sink current up to 430 μA"
      },
      {
        "number": "35",
        "name": "SEG10",
        "type": "output",
        "description": "LCD SEG driver output for segment 10; source/sink current up to 430 μA"
      },
      {
        "number": "36",
        "name": "SEG11",
        "type": "output",
        "description": "LCD SEG driver output for segment 11; source/sink current up to 430 μA"
      },
      {
        "number": "37",
        "name": "SEG12",
        "type": "output",
        "description": "LCD SEG driver output for segment 12; source/sink current up to 430 μA"
      },
      {
        "number": "38",
        "name": "SEG13",
        "type": "output",
        "description": "LCD SEG driver output for segment 13; source/sink current up to 430 μA"
      },
      {
        "number": "39",
        "name": "SEG14",
        "type": "output",
        "description": "LCD SEG driver output for segment 14; source/sink current up to 430 μA"
      },
      {
        "number": "40",
        "name": "SEG15",
        "type": "output",
        "description": "LCD SEG driver output for segment 15; source/sink current up to 430 μA"
      },
      {
        "number": "41",
        "name": "SEG16",
        "type": "output",
        "description": "LCD SEG driver output for segment 16; source/sink current up to 430 μA"
      },
      {
        "number": "42",
        "name": "SEG17",
        "type": "output",
        "description": "LCD SEG driver output for segment 17; source/sink current up to 430 μA"
      },
      {
        "number": "43",
        "name": "SEG18",
        "type": "output",
        "description": "LCD SEG driver output for segment 18; source/sink current up to 430 μA"
      },
      {
        "number": "44",
        "name": "SEG19",
        "type": "output",
        "description": "LCD SEG driver output for segment 19; source/sink current up to 430 μA"
      }
    ],
    "provenance": {
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      "cad": "KiCad official (CC-BY-SA 4.0)",
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        "described": 44,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
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        "role": "plain",
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        "units": "mm",
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        "seat": "z = 0",
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        "zmin_mm": 0,
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "TM Shenzhen Titan Micro Elec",
      "Package": "LQFP-44(10x10)",
      "Category": "LED Drivers",
      "Pins": "44"
    },
    "characteristics": {
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        {
          "name": "Operating temperature range",
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        {
          "name": "Supply voltage",
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          "kind": "recommended_operating",
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          "min": 2.7,
          "typ": 5,
          "max": 5.2,
          "conditions": "Tested at -45 to +85 ℃ unless noted",
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        {
          "name": "Operating temperature range",
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        {
          "name": "Operating junction temperature range",
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        {
          "name": "System clock frequency (internal RC)",
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          "kind": "timing",
          "unit": "KHz",
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          "max": 40,
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        {
          "name": "LCD drive scan frequency (internal RC)",
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        {
          "name": "WR clock frequency",
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          "name": "Operating current (internal RC, no load)",
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          "name": "Operating current (external clock, no load)",
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          "kind": "electrical",
          "unit": "μA",
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          "typ": 50,
          "max": 120,
          "conditions": "VDD=3.0V, external clock, no load",
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          "name": "Operating current (external clock, no load)",
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          "max": 240,
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          "name": "Standby current (power-save mode, no load)",
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          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 1,
          "max": 5,
          "conditions": "VDD=3.0V, power-save mode, no load",
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          "name": "Standby current (power-save mode, no load)",
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        {
          "name": "Input low voltage",
          "symbol": "Vil",
          "kind": "electrical",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 0.6,
          "conditions": "VDD=3.0V; DATA, WR, RD, CS",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input low voltage",
          "symbol": "Vil",
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          "max": 1,
          "conditions": "VDD=5.0V; DATA, WR, RD, CS",
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        },
        {
          "name": "Input high voltage",
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          "kind": "electrical",
          "unit": "V",
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          "typ": null,
          "max": 3,
          "conditions": "VDD=3.0V; DATA, WR, RD, CS",
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        },
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          "name": "Input high voltage",
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          "kind": "electrical",
          "unit": "V",
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          "typ": null,
          "max": 5,
          "conditions": "VDD=5.0V; DATA, WR, RD, CS",
          "source_page": 5,
          "source": "datasheet"
        },
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          "name": "DATA, BZ, BZ, IRQ sink current",
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          "kind": "electrical",
          "unit": "mA",
          "min": 2,
          "typ": 4.5,
          "max": null,
          "conditions": "VDD=3.0V; Vol=0.5V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "DATA, BZ, BZ, IRQ sink current",
          "symbol": "IOL1",
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