FM33LG025A

{
  "schema_version": 1,
  "type": "component",
  "slug": "fm33lg025a",
  "title": "FM33LG025A",
  "brief": "FUDAN MICRO Microcontroller Units (MCUs/MPUs/SOCs), LQFP-48(7x7). 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",
    "single chip microcomputer-microcontroller",
    "fm33lg025a",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "FM33LG025A",
    "manufacturer": "FUDAN MICRO",
    "package": "LQFP-48(7x7)",
    "pin_count": 48,
    "category": "Single Chip Microcomputer/Microcontroller",
    "subcategory": "Microcontroller Units (MCUs/MPUs/SOCs)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/76a8ad4a0d656efffe20d60a0802004a.pdf",
    "parts": {
      "symbol": "fm33lg025a.kicad_sym",
      "footprint": "fm33lg025a.kicad_mod",
      "model_3d": "fm33lg025a-hero.glb",
      "model_3d_plain": "fm33lg025a-etched.glb",
      "model_3d_step": "fm33lg025a-etched.step",
      "model_3d_step_plain": "fm33lg025a.step",
      "lbr": "fm33lg025a.lbr"
    },
    "distributor_links": {
      "lcsc": "C7497282"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T03:18:05Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PA15",
        "type": "bidirectional",
        "description": "GPIO with alternate functions WKUP0 external wake-up, SVS external supply detection and COMP3_OUT comparator output."
      },
      {
        "number": "2",
        "name": "PA0",
        "type": "bidirectional",
        "description": "GPIO with alternate functions COM0 LCD drive, UART4_RX, ADC_IN5 and LUT3_OUT PGL output."
      },
      {
        "number": "3",
        "name": "PA1",
        "type": "bidirectional",
        "description": "GPIO with alternate functions COM1 LCD drive, UART4_TX, ADC_IN12 and LUT2_OUT PGL output."
      },
      {
        "number": "4",
        "name": "PA2",
        "type": "bidirectional",
        "description": "GPIO with alternate functions COM2 LCD drive, UART0_RX and LPUART0_RX."
      },
      {
        "number": "5",
        "name": "PA3",
        "type": "bidirectional",
        "description": "GPIO with alternate functions COM3 LCD drive, UART0_TX and LPUART0_TX."
      },
      {
        "number": "6",
        "name": "PA4",
        "type": "bidirectional",
        "description": "GPIO with alternate functions COM4/SEG28 LCD drive, GPT1_CH3 timer channel and COMP2_INN1 comparator input."
      },
      {
        "number": "7",
        "name": "PA5",
        "type": "bidirectional",
        "description": "GPIO with alternate functions COM5/SEG29 LCD drive, GPT1_CH4 timer channel and COMP2_INN2 comparator input."
      },
      {
        "number": "8",
        "name": "PA6",
        "type": "bidirectional",
        "description": "GPIO with alternate functions COM6/SEG30 LCD drive, OPA1_INN2 op-amp input and CAN_RX."
      },
      {
        "number": "9",
        "name": "PA7",
        "type": "bidirectional",
        "description": "GPIO with alternate functions COM7/SEG31 LCD drive, OPA1_INP2 op-amp input and CAN_TX."
      },
      {
        "number": "10",
        "name": "PA8",
        "type": "bidirectional",
        "description": "GPIO with alternate functions SEG0 LCD drive, LPT32_CH1, SPI1_SSN and COMP2_INP1 comparator input."
      },
      {
        "number": "11",
        "name": "PA9",
        "type": "bidirectional",
        "description": "GPIO with alternate functions SEG1 LCD drive, LPT32_CH2, SPI1_SCK and COMP2_INP2 comparator input."
      },
      {
        "number": "12",
        "name": "PA11",
        "type": "bidirectional",
        "description": "GPIO with alternate functions SEG32 LCD drive, I2C SCL and LPUART2_RX."
      },
      {
        "number": "13",
        "name": "PA12",
        "type": "bidirectional",
        "description": "GPIO with alternate functions SEG33 LCD drive, I2C SDA and LPUART2_TX."
      },
      {
        "number": "14",
        "name": "PB2",
        "type": "bidirectional",
        "description": "GPIO with alternate functions WKUP2 wake-up, VCIN1 LCD capacitor pin (capacitor drive mode), UART4_RX and ATIM_CH1N."
      },
      {
        "number": "15",
        "name": "PB3",
        "type": "bidirectional",
        "description": "GPIO with alternate functions VCIN2 LCD capacitor pin (capacitor drive mode), UART4_TX and ATIM_CH2N."
      },
      {
        "number": "16",
        "name": "PB4",
        "type": "bidirectional",
        "description": "GPIO with alternate functions SEG3 LCD drive, ATIM_CH1, LPUART2_RX and COMP3_INN1 comparator input."
      },
      {
        "number": "17",
        "name": "PB5",
        "type": "bidirectional",
        "description": "GPIO with alternate functions SEG4 LCD drive, ATIM_CH2, LPUART2_TX and COMP3_INN2 comparator input."
      },
      {
        "number": "18",
        "name": "PB6",
        "type": "bidirectional",
        "description": "GPIO with alternate functions SEG5 LCD drive, ATIM_CH3 and SPI2_SSN."
      },
      {
        "number": "19",
        "name": "PB7",
        "type": "bidirectional",
        "description": "GPIO with alternate functions SEG6 LCD drive, ATIM_CH4, SPI2_SCK and ANATST factory test channel."
      },
      {
        "number": "20",
        "name": "PB8",
        "type": "bidirectional",
        "description": "GPIO with alternate functions SEG7 LCD drive, SPI0_SSN, ATIM_CH3N and COMP1_INP1 comparator input."
      },
      {
        "number": "21",
        "name": "PB9",
        "type": "bidirectional",
        "description": "GPIO with alternate functions SEG8 LCD drive, COMP1_INP2 comparator input, SPI0_SCK and GPT0_ETR external trigger."
      },
      {
        "number": "22",
        "name": "PB10",
        "type": "bidirectional",
        "description": "GPIO with alternate functions SEG9 LCD drive, OPA1_INN1 op-amp input, SPI0_MISO and GPT0_CH1."
      },
      {
        "number": "23",
        "name": "PB11",
        "type": "bidirectional",
        "description": "GPIO with alternate functions SEG10 LCD drive, OPA1_INP1 op-amp input, SPI MOSI and GPT0_CH2."
      },
      {
        "number": "24",
        "name": "PB12",
        "type": "bidirectional",
        "description": "GPIO with alternate functions WKUP3 wake-up, FOUT1 clock output, ATIM_ETR external trigger and OPA1_OUT1 op-amp output."
      },
      {
        "number": "25",
        "name": "PC0",
        "type": "bidirectional",
        "description": "GPIO with alternate functions VDISP2 LCD external capacitor (capacitor drive mode), COMP3_INP1, LUT0_OUT PGL output and GPT1_CH1."
      },
      {
        "number": "26",
        "name": "PC1",
        "type": "bidirectional",
        "description": "GPIO with alternate functions VDISP3 LCD external capacitor (capacitor drive mode), COMP3_INP2, LUT1_OUT PGL output and GPT1_CH2."
      },
      {
        "number": "27",
        "name": "PC2",
        "type": "bidirectional",
        "description": "GPIO with alternate functions XTHIN high-frequency crystal input, UART1_RX and LPUART1_RX."
      },
      {
        "number": "28",
        "name": "PC3",
        "type": "bidirectional",
        "description": "GPIO with alternate functions XTHOUT high-frequency crystal output, UART1_TX and LPUART1_TX."
      },
      {
        "number": "29",
        "name": "PC4",
        "type": "bidirectional",
        "description": "GPIO with alternate functions SEG13 LCD drive, OPA1_OUT2 op-amp output, COMP1_OUT comparator output and UART5_RX."
      },
      {
        "number": "30",
        "name": "PC5",
        "type": "bidirectional",
        "description": "GPIO with alternate functions SEG14 LCD drive, DAC_OUT, COMP2_OUT comparator output and UART5_TX."
      },
      {
        "number": "31",
        "name": "PC6",
        "type": "bidirectional",
        "description": "GPIO with alternate functions WKUP4 wake-up, SEG15 LCD drive, GPT1_ETR external trigger and COMP1_INN2 comparator input."
      },
      {
        "number": "32",
        "name": "PC7",
        "type": "bidirectional",
        "description": "GPIO with alternate functions SEG16 LCD drive, SPI2_SSN and ADC_IN6."
      },
      {
        "number": "33",
        "name": "PC8",
        "type": "bidirectional",
        "description": "GPIO with alternate functions SEG17 LCD drive, SPI2_SCK and ADC_IN13."
      },
      {
        "number": "34",
        "name": "PC9",
        "type": "bidirectional",
        "description": "GPIO with alternate functions SEG18 LCD drive, SPI2_MISO and ADC_IN14."
      },
      {
        "number": "35",
        "name": "PC10",
        "type": "bidirectional",
        "description": "GPIO with alternate functions WKUP5 wake-up, SEG19 LCD drive, SPI2_MOSI and ADC_IN15."
      },
      {
        "number": "36",
        "name": "XT32KO",
        "type": "output",
        "description": "32768Hz crystal oscillator output pin."
      },
      {
        "number": "37",
        "name": "XT32KI",
        "type": "input",
        "description": "32768Hz crystal oscillator input pin."
      },
      {
        "number": "38",
        "name": "VDD15",
        "type": "power_out",
        "description": "LDO output; connect a 100nF capacitor to ground."
      },
      {
        "number": "39",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground (VSSA)."
      },
      {
        "number": "40",
        "name": "VDD",
        "type": "power_in",
        "description": "Power supply (VDDA), 1.65 to 5.5V operating range."
      },
      {
        "number": "41",
        "name": "VREFP",
        "type": "passive",
        "description": "Reference voltage pin (ADC reference source)."
      },
      {
        "number": "42",
        "name": "VBAT",
        "type": "power_in",
        "description": "Backup power supply, 1.5 to 4.2V when power switching is used, otherwise shorted to VDD."
      },
      {
        "number": "43",
        "name": "PD11",
        "type": "bidirectional",
        "description": "GPIO with alternate functions WKUP6 wake-up, FOUT0 clock output, ATIM_BRK1 brake input and ADC_IN0."
      },
      {
        "number": "44",
        "name": "PD0",
        "type": "bidirectional",
        "description": "GPIO with alternate functions SEG22 LCD drive, UART5_RX, GPT2_CH1 and ADC_IN7."
      },
      {
        "number": "45",
        "name": "PD1",
        "type": "bidirectional",
        "description": "GPIO with alternate functions SEG23 LCD drive, UART5_TX, GPT2_CH2 and ADC_IN1."
      },
      {
        "number": "46",
        "name": "PD7",
        "type": "bidirectional",
        "description": "GPIO with alternate functions UART3_RX and SWCLK SWD interface clock."
      },
      {
        "number": "47",
        "name": "PD8",
        "type": "bidirectional",
        "description": "GPIO with alternate functions UART3_TX and SWIO SWD interface data."
      },
      {
        "number": "48",
        "name": "NRST",
        "type": "input",
        "description": "Reset pin."
      }
    ],
    "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: Datasheet describes VREFP only as '基准源' (reference source); direction (input/output/power) is unclea; Table 2-1 lists SPI1_MOSI for PB11 while the package figure shows SPI0_MOSI (and PB10/PB9 use SPI0);; Crystal pin directions inferred from names; PC2/PC3 are multiplexed with XTHIN/XTHOUT."
        ],
        "pages_sent": 64,
        "cost_usd": 0.6131,
        "at": "2026-10-23T03:17:49"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/76a8ad4a0d656efffe20d60a0802004a.pdf",
        "pages": 100,
        "sha256": "bfd0cc3c1ded70af",
        "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": "fm33lg025a.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": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "fm33lg025a-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": "5831ec13bae05fdc1eef4754953b29fb34b9841bbf0143a05778d5d8530e7fda",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "FUDAN MICRO",
      "Package": "LQFP-48(7x7)",
      "Category": "Single Chip Microcomputer/Microcontroller",
      "Pins": "48"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "bfd0cc3c1ded70af0064fd22aec12345f3c6e3883638bbcc16fc8268cb73fcd7",
      "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": 61,
          "source": "datasheet"
        },
        {
          "name": "Pin voltage",
          "symbol": "VPIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6.5,
          "conditions": "VSS-0.3 to 6.5 V",
          "source_page": 61,
          "source": "datasheet"
        },
        {
          "name": "ADC reference voltage",
          "symbol": "VREFP-VREFN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6.5,
          "conditions": "",
          "source_page": 61,
          "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": 61,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature",
          "symbol": "TA",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 105,
          "conditions": "AEC-Q100 grade 2",
          "source_page": 61,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 61,
          "source": "datasheet"
        },
        {
          "name": "ESD HBM, PC5 (DAC_OUT)",
          "symbol": "HBM",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -2000,
          "typ": null,
          "max": 2000,
          "conditions": "TA=25℃, JEDEC JS-001",
          "source_page": 61,
          "source": "datasheet"
        },
        {
          "name": "ESD HBM, all other pins",
          "symbol": "HBM",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -4000,
          "typ": null,
          "max": 4000,
          "conditions": "TA=25℃, JEDEC JS-001",
          "source_page": 61,
          "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": 61,
          "source": "datasheet"
        },
        {
          "name": "IO latch-up",
          "symbol": "LU",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -210,
          "typ": null,
          "max": 210,
          "conditions": "-(0.5VDD) < VI < (1.5VDD), TA=25℃, JESD78E",
          "source_page": 61,
          "source": "datasheet"
        },
        {
          "name": "Max current into VDD (source)",
          "symbol": "∑IVDD",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 120,
          "conditions": "",
          "source_page": 61,
          "source": "datasheet"
        },
        {
          "name": "Max current out of VSS (sink)",
          "symbol": "∑IVSS",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "",
          "source_page": 61,
          "source": "datasheet"
        },
        {
          "name": "Total IO sink current",
          "symbol": "∑IIO",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "all IO sink",
          "source_page": 61,
          "source": "datasheet"
        },
        {
          "name": "Total IO source current",
          "symbol": "∑IIO",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 120,
          "conditions": "all IO source",
          "source_page": 61,
          "source": "datasheet"
        },
        {
          "name": "AHB clock frequency",
          "symbol": "fHCLK",
          "kind": "recommended_operating",
          "unit": "MHz",
          "min": 0,
          "typ": null,
          "max": 64,
          "conditions": "TA=-40~105C",
          "source_page": 62,
          "source": "datasheet"
        },
        {
          "name": "APB clock frequency",
          "symbol": "fPCLK",
          "kind": "recommended_operating",
          "unit": "MHz",
          "min": 0,
          "typ": null,
          "max": 64,
          "conditions": "TA=-40~105C",
          "source_page": 62,
          "source": "datasheet"
        },
        {
          "name": "Operating voltage range",
          "symbol": "VDD",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.65,
          "typ": null,
          "max": 5.5,
          "conditions": "TA=-40~105C",
          "source_page": 62,
          "source": "datasheet"
        },
        {
          "name": "Backup supply voltage, no power switching",
          "symbol": "VBAT",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.5,
          "typ": null,
          "max": 5.5,
          "conditions": "power switching not used, shorted to VDD",
          "source_page": 62,
          "source": "datasheet"
        },
        {
          "name": "Backup supply voltage, power switching",
          "symbol": "VBAT",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.5,
          "typ": null,
          "max": 4.2,
          "conditions": "power switching used, VBAT supplied separately",
          "source_page": 62,
          "source": "datasheet"
        },
        {
          "name": "Junction temperature",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 62,
          "source": "datasheet"
        },
        {
          "name": "Run mode current 8MHz",
          "symbol": "IDDRUN",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 1.36,
          "max": 1.65,
          "conditions": "fAHB=8MHz (RCHF), PLL off, Flash 0 wait, TA=25℃, VDD=5V",
          "source_page": 62,
          "source": "datasheet"
        },
        {
          "name": "Run mode current 8MHz",
          "symbol": "IDDRUN",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 1.4,
          "max": 1.7,
          "conditions": "fAHB=8MHz (RCHF), PLL off, Flash 0 wait, TA=105℃, VDD=5V",
          "source_page": 62,
          "source": "datasheet"
        },
        {
          "name": "Run mode current 24MHz",
          "symbol": "IDDRUN",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 3.15,
          "max": 3.5,
          "conditions": "fAHB=24MHz (RCHF), PLL off, Flash 0 wait, TA=25℃, VDD=5V",
          "source_page": 62,
          "source": "datasheet"
        },
        {
          "name": "Run mode current 24MHz",
          "symbol": "IDDRUN",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 3.12,
          "max": 3.6,
          "conditions": "fAHB=24MHz (RCHF), PLL off, Flash 0 wait, TA=105℃, VDD=5V",
          "source_page": 62,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "fm33lg025a"
  ],
  "discovery_pitch": "FM33LG025A (FUDAN MICRO) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
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