HT1621BRQZ

{
  "schema_version": 1,
  "type": "component",
  "slug": "ht1621brqz",
  "title": "HT1621BRQZ",
  "brief": "HTCSEMI LCD Drivers, LQFP-48(7x7). 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",
    "ht1621brqz",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "HT1621BRQZ",
    "manufacturer": "HTCSEMI",
    "package": "LQFP-48(7x7)",
    "pin_count": 48,
    "category": "LED Drivers",
    "subcategory": "LCD Drivers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757961622918832128",
    "parts": {
      "symbol": "ht1621brqz.kicad_sym",
      "footprint": "ht1621brqz.kicad_mod",
      "model_3d": "ht1621brqz-hero.glb",
      "model_3d_plain": "ht1621brqz-etched.glb",
      "model_3d_step": "ht1621brqz-etched.step",
      "model_3d_step_plain": "ht1621brqz.step",
      "lbr": "ht1621brqz.lbr"
    },
    "distributor_links": {
      "lcsc": "C2886391"
    },
    "distributor_check": {
      "checked_at": "2026-10-21T19:57:42Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "CS",
        "type": "input",
        "description": "Active-low chip select input with internal pull-high resistor; CS high disables the serial interface and resets it, halting all data/command transmission between host and HT1621."
      },
      {
        "number": "2",
        "name": "RD",
        "type": "input",
        "description": "Read clock input with internal pull-high resistor; RAM data is clocked out on the falling edge of RD and appears on the DATA line for the host to latch on the next rising edge."
      },
      {
        "number": "3",
        "name": "WR",
        "type": "input",
        "description": "Write clock input with internal pull-high resistor; data present on the DATA line is latched into the HT1621 on the rising edge of WR."
      },
      {
        "number": "4",
        "name": "DATA",
        "type": "bidirectional",
        "description": "3-wire serial interface data input/output; carries address, command, and RAM data in both read and write directions."
      },
      {
        "number": "5",
        "name": "VSS",
        "type": "power_in",
        "description": "Negative power supply ground (0 V reference)."
      },
      {
        "number": "6",
        "name": "OSCO",
        "type": "output",
        "description": "Crystal oscillator output pad; connect with OSCI to a 32.768 kHz crystal; leave open when the on-chip RC oscillator is selected."
      },
      {
        "number": "7",
        "name": "OSCI",
        "type": "input",
        "description": "Crystal oscillator input or external 256 kHz clock input; leave open when on-chip RC oscillator is selected."
      },
      {
        "number": "8",
        "name": "VLCD",
        "type": "power_in",
        "description": "LCD bias voltage supply input used to adjust the LCD operating (driving) voltage level."
      },
      {
        "number": "9",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive power supply; operating range 2.4 V to 5.2 V (absolute maximum 5.5 V)."
      },
      {
        "number": "10",
        "name": "IRQ",
        "type": "output",
        "description": "Time-base or WDT overflow flag; NMOS open-drain active-low output, selectable between time-base or WDT function via S/W command."
      },
      {
        "number": "11",
        "name": "BZ",
        "type": "output",
        "description": "Tone frequency output (positive side of differential buzzer pair); outputs 2 kHz or 4 kHz as selected by the TONE command."
      },
      {
        "number": "12",
        "name": "BZB",
        "type": "output",
        "description": "Tone frequency output, complementary/inverted side of the BZ differential buzzer pair; both BZ and BZB remain low when tone is disabled."
      },
      {
        "number": "13",
        "name": "COM3",
        "type": "output",
        "description": "LCD common output COM3; one of four time-multiplexed common drive outputs for the 32×4 LCD panel."
      },
      {
        "number": "14",
        "name": "COM2",
        "type": "output",
        "description": "LCD common output COM2; one of four time-multiplexed common drive outputs for the 32×4 LCD panel."
      },
      {
        "number": "15",
        "name": "COM1",
        "type": "output",
        "description": "LCD common output COM1; one of four time-multiplexed common drive outputs for the 32×4 LCD panel."
      },
      {
        "number": "16",
        "name": "COM0",
        "type": "output",
        "description": "LCD common output COM0; one of four time-multiplexed common drive outputs for the 32×4 LCD panel."
      },
      {
        "number": "17",
        "name": "SEG31",
        "type": "output",
        "description": "LCD segment output SEG31; one of 32 segment drive outputs mapped directly from the 32×4 display RAM."
      },
      {
        "number": "18",
        "name": "SEG30",
        "type": "output",
        "description": "LCD segment output SEG30; one of 32 segment drive outputs mapped directly from the 32×4 display RAM."
      },
      {
        "number": "19",
        "name": "SEG29",
        "type": "output",
        "description": "LCD segment output SEG29; one of 32 segment drive outputs mapped directly from the 32×4 display RAM."
      },
      {
        "number": "20",
        "name": "SEG27",
        "type": "output",
        "description": "LCD segment output SEG27; positioned out of sequential numerical order at this pin in the LQFP-48 B package per datasheet note (see review_required)."
      },
      {
        "number": "21",
        "name": "SEG28",
        "type": "output",
        "description": "LCD segment output SEG28; positioned out of sequential numerical order at this pin in the LQFP-48 B package per datasheet note (see review_required)."
      },
      {
        "number": "22",
        "name": "SEG26",
        "type": "output",
        "description": "LCD segment output SEG26; one of 32 segment drive outputs mapped directly from the 32×4 display RAM."
      },
      {
        "number": "23",
        "name": "SEG25",
        "type": "output",
        "description": "LCD segment output SEG25; one of 32 segment drive outputs mapped directly from the 32×4 display RAM."
      },
      {
        "number": "24",
        "name": "SEG24",
        "type": "output",
        "description": "LCD segment output SEG24; one of 32 segment drive outputs mapped directly from the 32×4 display RAM."
      },
      {
        "number": "25",
        "name": "SEG23",
        "type": "output",
        "description": "LCD segment output SEG23; one of 32 segment drive outputs mapped directly from the 32×4 display RAM."
      },
      {
        "number": "26",
        "name": "SEG22",
        "type": "output",
        "description": "LCD segment output SEG22; one of 32 segment drive outputs mapped directly from the 32×4 display RAM."
      },
      {
        "number": "27",
        "name": "SEG21",
        "type": "output",
        "description": "LCD segment output SEG21; one of 32 segment drive outputs mapped directly from the 32×4 display RAM."
      },
      {
        "number": "28",
        "name": "SEG20",
        "type": "output",
        "description": "LCD segment output SEG20; one of 32 segment drive outputs mapped directly from the 32×4 display RAM."
      },
      {
        "number": "29",
        "name": "SEG19",
        "type": "output",
        "description": "LCD segment output SEG19; one of 32 segment drive outputs mapped directly from the 32×4 display RAM."
      },
      {
        "number": "30",
        "name": "SEG18",
        "type": "output",
        "description": "LCD segment output SEG18; one of 32 segment drive outputs mapped directly from the 32×4 display RAM."
      },
      {
        "number": "31",
        "name": "SEG17",
        "type": "output",
        "description": "LCD segment output SEG17; one of 32 segment drive outputs mapped directly from the 32×4 display RAM."
      },
      {
        "number": "32",
        "name": "SEG16",
        "type": "output",
        "description": "LCD segment output SEG16; one of 32 segment drive outputs mapped directly from the 32×4 display RAM."
      },
      {
        "number": "33",
        "name": "SEG15",
        "type": "output",
        "description": "LCD segment output SEG15; one of 32 segment drive outputs mapped directly from the 32×4 display RAM."
      },
      {
        "number": "34",
        "name": "SEG14",
        "type": "output",
        "description": "LCD segment output SEG14; one of 32 segment drive outputs mapped directly from the 32×4 display RAM."
      },
      {
        "number": "35",
        "name": "SEG13",
        "type": "output",
        "description": "LCD segment output SEG13; one of 32 segment drive outputs mapped directly from the 32×4 display RAM."
      },
      {
        "number": "36",
        "name": "SEG12",
        "type": "output",
        "description": "LCD segment output SEG12; one of 32 segment drive outputs mapped directly from the 32×4 display RAM."
      },
      {
        "number": "37",
        "name": "SEG11",
        "type": "output",
        "description": "LCD segment output SEG11; one of 32 segment drive outputs mapped directly from the 32×4 display RAM."
      },
      {
        "number": "38",
        "name": "SEG10",
        "type": "output",
        "description": "LCD segment output SEG10; one of 32 segment drive outputs mapped directly from the 32×4 display RAM."
      },
      {
        "number": "39",
        "name": "SEG9",
        "type": "output",
        "description": "LCD segment output SEG9; one of 32 segment drive outputs mapped directly from the 32×4 display RAM."
      },
      {
        "number": "40",
        "name": "SEG8",
        "type": "output",
        "description": "LCD segment output SEG8; one of 32 segment drive outputs mapped directly from the 32×4 display RAM."
      },
      {
        "number": "41",
        "name": "SEG7",
        "type": "output",
        "description": "LCD segment output SEG7; one of 32 segment drive outputs mapped directly from the 32×4 display RAM."
      },
      {
        "number": "42",
        "name": "SEG6",
        "type": "output",
        "description": "LCD segment output SEG6; one of 32 segment drive outputs mapped directly from the 32×4 display RAM."
      },
      {
        "number": "43",
        "name": "SEG5",
        "type": "output",
        "description": "LCD segment output SEG5; one of 32 segment drive outputs mapped directly from the 32×4 display RAM."
      },
      {
        "number": "44",
        "name": "SEG4",
        "type": "output",
        "description": "LCD segment output SEG4; one of 32 segment drive outputs mapped directly from the 32×4 display RAM."
      },
      {
        "number": "45",
        "name": "SEG3",
        "type": "output",
        "description": "LCD segment output SEG3; one of 32 segment drive outputs mapped directly from the 32×4 display RAM."
      },
      {
        "number": "46",
        "name": "SEG2",
        "type": "output",
        "description": "LCD segment output SEG2; one of 32 segment drive outputs mapped directly from the 32×4 display RAM."
      },
      {
        "number": "47",
        "name": "SEG1",
        "type": "output",
        "description": "LCD segment output SEG1; one of 32 segment drive outputs mapped directly from the 32×4 display RAM."
      },
      {
        "number": "48",
        "name": "SEG0",
        "type": "output",
        "description": "LCD segment output SEG0; one of 32 segment drive outputs mapped directly from the 32×4 display RAM."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757961622918832128",
        "pages": 22,
        "sha256": "224b566d1221cf6e",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 48,
        "described": 48,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ht1621brqz.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9,
          9,
          1.5
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "9dea352d93177c2904afd7d7b68ea8855ce1ab691f69f8b3e13655600514b6bf",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ht1621brqz-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9,
          9,
          1.5
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "7ec38fee4ef820c20f940a78c3647ae865f4337a868670e7b5187953a9f47e03",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "HTCSEMI",
      "Package": "LQFP-48(7x7)",
      "Category": "LED Drivers",
      "Pins": "48"
    },
    "appearance": {
      "contacts": {
        "quote": "z HT1621D: 28-pin SKDIP28 package z HT1621G: 48-pad Gold bumped chip",
        "page": 1,
        "doc": "ds.pdf",
        "plating": "gold"
      },
      "version": 1,
      "datasheet_sha256": "224b566d1221cf6e6ab5070dfdc3a1a50c52ab81a0d681cc8d289268098202aa"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ht1621brqz"
  ],
  "discovery_pitch": "HT1621BRQZ (HTCSEMI) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
    "ht1621brqz.kicad_sym",
    "ht1621brqz.kicad_mod",
    "ht1621brqz.glb",
    "ht1621brqz.step",
    "ht1621brqz.lbr",
    "docs/hero.png",
    "docs/ht1621brqz-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ht1621brqz-hero.glb",
    "ht1621brqz-hero.overlay.json",
    "ht1621brqz-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}