FM33LC026N

{
  "schema_version": 1,
  "type": "component",
  "slug": "fm33lc026n",
  "title": "FM33LC026N",
  "brief": "FUDAN MICRO Other Processors and Microcontrollers (MCUs), LQFP-64(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "embedded processors & controllers",
    "fm33lc026n",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "FM33LC026N",
    "manufacturer": "FUDAN MICRO",
    "package": "LQFP-64(10x10)",
    "pin_count": 64,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Other Processors and Microcontrollers (MCUs)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/11c0e9717271ec07bc52146f969f8e65.pdf",
    "parts": {
      "symbol": "fm33lc026n.kicad_sym",
      "footprint": "fm33lc026n.kicad_mod",
      "model_3d": "fm33lc026n-hero.glb",
      "model_3d_plain": "fm33lc026n-etched.glb",
      "model_3d_step": "fm33lc026n-etched.step",
      "model_3d_step_plain": "fm33lc026n.step",
      "lbr": "fm33lc026n.lbr"
    },
    "distributor_links": {
      "lcsc": "C648829"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T18:10:51Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 887 calls left today"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "NRST",
        "type": "input",
        "description": "Global reset pin, active low; held low for more than 8 ms it triggers a system reset (debug logic not reset)."
      },
      {
        "number": "2",
        "name": "PA13",
        "type": "bidirectional",
        "description": "GPIO with alternate functions UART0_RX, LPUART0_RX and ADC_IN6."
      },
      {
        "number": "3",
        "name": "PA14",
        "type": "bidirectional",
        "description": "GPIO with alternate functions UART0_TX, LPUART0_TX and ADC_IN7."
      },
      {
        "number": "4",
        "name": "PA15",
        "type": "bidirectional",
        "description": "GPIO with WKUP0 wake-up, SVS external supply detection and ADC_IN10."
      },
      {
        "number": "5",
        "name": "PA0",
        "type": "bidirectional",
        "description": "GPIO with LCD COM0 and UART4_RX."
      },
      {
        "number": "6",
        "name": "PA1",
        "type": "bidirectional",
        "description": "GPIO with LCD COM1 and UART4_TX."
      },
      {
        "number": "7",
        "name": "PA2",
        "type": "bidirectional",
        "description": "GPIO with LCD COM2, UART0_RX and LPUART0_RX."
      },
      {
        "number": "8",
        "name": "PA3",
        "type": "bidirectional",
        "description": "GPIO with LCD COM3, UART0_TX and LPUART0_TX."
      },
      {
        "number": "9",
        "name": "PA4",
        "type": "bidirectional",
        "description": "GPIO with LCD COM4/SEG28, GPT1_CH3 and COMP2_INN1 comparator input."
      },
      {
        "number": "10",
        "name": "PA5",
        "type": "bidirectional",
        "description": "GPIO with LCD COM5/SEG29, GPT1_CH4 and COMP2_INN2 comparator input."
      },
      {
        "number": "11",
        "name": "PA6",
        "type": "bidirectional",
        "description": "GPIO with LCD COM6/SEG30 and OPA1_INN2 op-amp input."
      },
      {
        "number": "12",
        "name": "PA7",
        "type": "bidirectional",
        "description": "GPIO with LCD COM7/SEG31 and OPA1_INP2 op-amp input."
      },
      {
        "number": "13",
        "name": "PA8",
        "type": "bidirectional",
        "description": "GPIO with LCD SEG0, LPT32_CH1 and COMP2_INP1 comparator input."
      },
      {
        "number": "14",
        "name": "PA9",
        "type": "bidirectional",
        "description": "GPIO with LCD SEG1, LPT32_CH2 and COMP2_INP2 comparator input."
      },
      {
        "number": "15",
        "name": "PA10",
        "type": "bidirectional",
        "description": "GPIO with WKUP1, LCD SEG2, LPT32_ETR and COMP1_INN1 comparator input."
      },
      {
        "number": "16",
        "name": "PA11",
        "type": "bidirectional",
        "description": "True open-drain GPIO with I2C SCL clock; needs external pull-up, 20 mA sink capability."
      },
      {
        "number": "17",
        "name": "PA12",
        "type": "bidirectional",
        "description": "True open-drain GPIO with I2C SDA data; needs external pull-up, 20 mA sink capability."
      },
      {
        "number": "18",
        "name": "PB0",
        "type": "bidirectional",
        "description": "GPIO with ADC_EXSYNC ADC external enable."
      },
      {
        "number": "19",
        "name": "PB1",
        "type": "bidirectional",
        "description": "GPIO with ADC_EXSAMP ADC external sampling control."
      },
      {
        "number": "20",
        "name": "PB2",
        "type": "bidirectional",
        "description": "GPIO with WKUP2, UART4_RX and ATIM_CH1N."
      },
      {
        "number": "21",
        "name": "PB3",
        "type": "bidirectional",
        "description": "GPIO with UART4_TX and ATIM_CH2N (table text labels it external wake-up pin)."
      },
      {
        "number": "22",
        "name": "PB4",
        "type": "bidirectional",
        "description": "GPIO with LCD SEG3 and ATIM_CH1."
      },
      {
        "number": "23",
        "name": "PB5",
        "type": "bidirectional",
        "description": "GPIO with LCD SEG4 and ATIM_CH2."
      },
      {
        "number": "24",
        "name": "PB6",
        "type": "bidirectional",
        "description": "GPIO with LCD SEG5 and ATIM_CH3."
      },
      {
        "number": "25",
        "name": "PB7",
        "type": "bidirectional",
        "description": "GPIO with LCD SEG6 and ATIM_CH4."
      },
      {
        "number": "26",
        "name": "PB8",
        "type": "bidirectional",
        "description": "GPIO with LCD SEG7, SPI1_SSN and ATIM_CH3N."
      },
      {
        "number": "27",
        "name": "PB9",
        "type": "bidirectional",
        "description": "GPIO with LCD SEG8, ANATST analog test, SPI1_SCK and GPT0_ETR."
      },
      {
        "number": "28",
        "name": "PB10",
        "type": "bidirectional",
        "description": "GPIO with LCD SEG9, OPA1_INN1, SPI1_MISO and GPT0_CH1."
      },
      {
        "number": "29",
        "name": "PB11",
        "type": "bidirectional",
        "description": "GPIO with LCD SEG10, OPA1_INP1, SPI1_MOSI and GPT0_CH2."
      },
      {
        "number": "30",
        "name": "PB12",
        "type": "bidirectional",
        "description": "GPIO (5V tolerant) with WKUP3, FOUT1 clock output and ATIM_ETR."
      },
      {
        "number": "31",
        "name": "PB13",
        "type": "bidirectional",
        "description": "GPIO with LCD SEG11, OPA2_INN1, UART1_RX and LPUART1_RX."
      },
      {
        "number": "32",
        "name": "PB14",
        "type": "bidirectional",
        "description": "GPIO with LCD SEG12, OPA2_INP1, UART1_TX and LPUART1_TX."
      },
      {
        "number": "33",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "34",
        "name": "VDD",
        "type": "power_in",
        "description": "Main power supply."
      },
      {
        "number": "35",
        "name": "PC0",
        "type": "bidirectional",
        "description": "GPIO with OPA2_INN2 and GPT1_CH1."
      },
      {
        "number": "36",
        "name": "PC1",
        "type": "bidirectional",
        "description": "GPIO with OPA2_INP2 and GPT1_CH2."
      },
      {
        "number": "37",
        "name": "PC2",
        "type": "bidirectional",
        "description": "GPIO with XTHIN high-frequency crystal input, UART1_RX and LPUART1_RX."
      },
      {
        "number": "38",
        "name": "PC3",
        "type": "bidirectional",
        "description": "GPIO with XTHOUT high-frequency crystal output, UART1_TX and LPUART1_TX."
      },
      {
        "number": "39",
        "name": "PC4",
        "type": "bidirectional",
        "description": "GPIO with LCD SEG13, OPA1_OUT output, and UART5_RX."
      },
      {
        "number": "40",
        "name": "PC5",
        "type": "bidirectional",
        "description": "GPIO with LCD SEG14, OPA2_OUT output, and UART5_TX."
      },
      {
        "number": "41",
        "name": "PC6",
        "type": "bidirectional",
        "description": "GPIO with WKUP4, LCD SEG15, GPT1_ETR and ADC_IN11."
      },
      {
        "number": "42",
        "name": "PC7",
        "type": "bidirectional",
        "description": "GPIO with LCD SEG16, SPI2_SSN and ADC_IN8."
      },
      {
        "number": "43",
        "name": "PC8",
        "type": "bidirectional",
        "description": "GPIO with LCD SEG17, SPI2_SCK and ADC_IN9."
      },
      {
        "number": "44",
        "name": "PC9",
        "type": "bidirectional",
        "description": "GPIO with LCD SEG18, SPI2_MISO and ADC_IN0."
      },
      {
        "number": "45",
        "name": "PC10",
        "type": "bidirectional",
        "description": "GPIO with WKUP5, LCD SEG19, SPI2_MOSI and ADC_IN1."
      },
      {
        "number": "46",
        "name": "PC11",
        "type": "bidirectional",
        "description": "GPIO with LCD SEG20, U7816CLK 7816 interface clock and GPT0_CH3."
      },
      {
        "number": "47",
        "name": "PC12",
        "type": "bidirectional",
        "description": "GPIO with LCD SEG21, U7816IO 7816 interface data and GPT0_CH4."
      },
      {
        "number": "48",
        "name": "PD9",
        "type": "bidirectional",
        "description": "GPIO with XT32KO 32768Hz crystal output."
      },
      {
        "number": "49",
        "name": "PD10",
        "type": "bidirectional",
        "description": "GPIO with XT32KI 32768Hz crystal input."
      },
      {
        "number": "50",
        "name": "VDD15",
        "type": "power_out",
        "description": "LDO output; connect a 100nF capacitor to ground."
      },
      {
        "number": "51",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "52",
        "name": "VDD",
        "type": "power_in",
        "description": "Main power supply."
      },
      {
        "number": "53",
        "name": "VSSA",
        "type": "power_in",
        "description": "Analog ground."
      },
      {
        "number": "54",
        "name": "VDDA",
        "type": "power_in",
        "description": "Analog power supply, must equal VDD, 1.8 to 5.5 V without USB."
      },
      {
        "number": "55",
        "name": "PD11",
        "type": "bidirectional",
        "description": "GPIO with WKUP6, FOUT0 clock output, ATIM_BRK1 and ADC_IN2."
      },
      {
        "number": "56",
        "name": "PD0",
        "type": "bidirectional",
        "description": "GPIO with LCD SEG22, UART5_RX and ADC_IN3."
      },
      {
        "number": "57",
        "name": "PD1",
        "type": "bidirectional",
        "description": "GPIO with LCD SEG23, UART5_TX and ADC_IN4."
      },
      {
        "number": "58",
        "name": "PD2",
        "type": "bidirectional",
        "description": "GPIO with LCD SEG24, SPI1_SSN and ADC_IN5."
      },
      {
        "number": "59",
        "name": "PD3",
        "type": "bidirectional",
        "description": "GPIO with LCD SEG25 and SPI1_SCK."
      },
      {
        "number": "60",
        "name": "PD4",
        "type": "bidirectional",
        "description": "GPIO with LCD SEG26, SPI1_MISO and COMP1_INP1 comparator input."
      },
      {
        "number": "61",
        "name": "PD5",
        "type": "bidirectional",
        "description": "GPIO with LCD SEG27, SPI1_MOSI and COMP1_INP2 comparator input."
      },
      {
        "number": "62",
        "name": "PD6",
        "type": "bidirectional",
        "description": "GPIO with WKUP7, ANATST analog test and ATIM_BRK2."
      },
      {
        "number": "63",
        "name": "PD7",
        "type": "bidirectional",
        "description": "GPIO with SWCLK SWD interface clock."
      },
      {
        "number": "64",
        "name": "PD8",
        "type": "bidirectional",
        "description": "GPIO with SWIO SWD interface data."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: PB3 (pin 21) function text in the N pin table reads 'external wake-up pin' instead of GPIO; likely a; The PB14 row of the N pin table contains stray DP/DM USB lines, which belong to the U variant; the N; Pin 33 (VSS) and 34 (VDD) rows in the N table are partly merged with other columns; assignments foll"
        ],
        "pages_sent": 138,
        "cost_usd": 0.9555,
        "at": "2026-10-23T18:10:24"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/11c0e9717271ec07bc52146f969f8e65.pdf",
        "pages": 702,
        "sha256": "82de2f50958060d7",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 64,
        "described": 64,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "fm33lc026n.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          12,
          12,
          1.5
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "b0c827bc5c05552175d28affe44a5bd2ab45c9c36efff6ff07a74cc449b13db4",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "fm33lc026n-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          12,
          12,
          1.5
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "403f172a27f479cb49835a23c7c23ae27aee571a90f42a0e267876c00b2c7fd6",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "FUDAN MICRO",
      "Package": "LQFP-64(10x10)",
      "Category": "Embedded Processors & Controllers",
      "Pins": "64"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "82de2f50958060d70c3139c45d4c743a78fed071cc6bdf8bcc847b16dfec0e87",
      "rows": [
        {
          "name": "Supply voltage (VDD, VDDA) relative to VSS",
          "symbol": "VDD-VSS",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6.5,
          "conditions": "includes VDD, VDDA",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "Pin voltage",
          "symbol": "VPIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6.5,
          "conditions": "min is VSS-0.3",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "VDD to VDDA voltage difference",
          "symbol": "|ΔVDD|",
          "kind": "absolute_maximum",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "Voltage difference between all ground pins",
          "symbol": "|ΔVSS|",
          "kind": "absolute_maximum",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature",
          "symbol": "TA",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "ESD HBM, pins other than PA11, PA12, PB12",
          "symbol": "HBM",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -8000,
          "typ": null,
          "max": 8000,
          "conditions": "TA=25℃, JEDEC JS-001",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "ESD HBM, PA11, PA12, PB12",
          "symbol": "HBM",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -5000,
          "typ": null,
          "max": 5000,
          "conditions": "TA=25℃, JEDEC JS-001",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "ESD CDM",
          "symbol": "CDM",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -1000,
          "typ": null,
          "max": 1000,
          "conditions": "TA=25℃, JEDEC JS-002",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "IO latch-up trigger current",
          "symbol": "Itrigger",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -125,
          "typ": null,
          "max": 125,
          "conditions": "-(0.5VDD) < VI < (1.5VDD), TA=25℃, JESD78E",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "IO latch-up supply voltage",
          "symbol": "Vsupply",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 8.25,
          "conditions": "-(0.5VDD) < VI < (1.5VDD), TA=25℃, JESD78E",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "Max current into VDD (source)",
          "symbol": "ΣIVDD",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 90,
          "conditions": "",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "Max current out of VSS (sink)",
          "symbol": "ΣIVSS",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 70,
          "conditions": "",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "Total IO sink current",
          "symbol": "ΣIIO",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 90,
          "conditions": "all IO sink",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "Total IO source current",
          "symbol": "ΣIIO",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 70,
          "conditions": "all IO source",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "AHB clock frequency",
          "symbol": "fHCLK",
          "kind": "recommended_operating",
          "unit": "Mhz",
          "min": 0,
          "typ": null,
          "max": 64,
          "conditions": "",
          "source_page": 58,
          "source": "datasheet"
        },
        {
          "name": "APB clock frequency",
          "symbol": "fPCLK",
          "kind": "recommended_operating",
          "unit": "Mhz",
          "min": 0,
          "typ": null,
          "max": 64,
          "conditions": "",
          "source_page": 58,
          "source": "datasheet"
        },
        {
          "name": "Operating voltage range (no USB), BOR enabled",
          "symbol": "VDD",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.8,
          "typ": null,
          "max": 5.5,
          "conditions": "BOR 使能 (BOR enabled), not using USB",
          "source_page": 58,
          "source": "datasheet"
        },
        {
          "name": "Operating voltage range (no USB), BOR disabled",
          "symbol": "VDD",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.35,
          "typ": null,
          "max": 5.5,
          "conditions": "BOR 关闭 (BOR disabled), not using USB",
          "source_page": 58,
          "source": "datasheet"
        },
        {
          "name": "Analog circuit operating voltage (no USB)",
          "symbol": "VDDA",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.8,
          "typ": null,
          "max": 5.5,
          "conditions": "must satisfy VDDA=VDD",
          "source_page": 58,
          "source": "datasheet"
        },
        {
          "name": "Junction temperature",
          "symbol": "TJ",
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