component
FM33LC043N
Public Made by Adomby adom
FUDAN MICRO Other Processors and Microcontrollers (MCUs), QFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"schema_version": 1,
"type": "component",
"slug": "fm33lc043n",
"title": "FM33LC043N",
"brief": "FUDAN MICRO Other Processors and Microcontrollers (MCUs), QFN-32-EP(5x5). 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",
"fm33lc043n",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "FM33LC043N",
"manufacturer": "FUDAN MICRO",
"package": "QFN-32-EP(5x5)",
"pin_count": 33,
"category": "Embedded Processors & Controllers",
"subcategory": "Other Processors and Microcontrollers (MCUs)",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/07233dfde9eabce59aac9f2feec44738.pdf",
"parts": {
"symbol": "fm33lc043n.kicad_sym",
"footprint": "fm33lc043n.kicad_mod",
"model_3d": "fm33lc043n-hero.glb",
"model_3d_plain": "fm33lc043n-etched.glb",
"model_3d_step": "fm33lc043n-etched.step",
"model_3d_step_plain": "fm33lc043n.step",
"lbr": "fm33lc043n.lbr"
},
"distributor_links": {
"lcsc": "C908397"
},
"distributor_check": {
"checked_at": "2026-10-22T22:04:47Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "quota"
},
"mouser": {
"pn": null,
"status": "quota"
}
},
"pins": [
{
"number": "1",
"name": "PD8",
"type": "bidirectional",
"description": "GPIO that doubles as SWIO, the SWD interface data line."
},
{
"number": "2",
"name": "NRST",
"type": "input",
"description": "Global reset pin; holding it low for more than 8 ms resets the chip, and 5 kΩ pull-up is specified."
},
{
"number": "3",
"name": "PA13",
"type": "bidirectional",
"description": "GPIO with UART0_RX, LPUART0_RX and ADC_IN6 functions."
},
{
"number": "4",
"name": "PA14",
"type": "bidirectional",
"description": "GPIO with UART0_TX, LPUART0_TX and ADC_IN7 functions."
},
{
"number": "5",
"name": "PA15",
"type": "bidirectional",
"description": "GPIO with WKUP0 wake-up, SVS external supply detection and ADC_IN10 functions."
},
{
"number": "6",
"name": "PA8",
"type": "bidirectional",
"description": "GPIO with SEG0 LCD segment, LPT32_CH1 and COMP2_INP1 comparator input functions."
},
{
"number": "7",
"name": "PA9",
"type": "bidirectional",
"description": "GPIO with SEG1 LCD segment, LPT32_CH2 and COMP2_INP2 comparator input functions."
},
{
"number": "8",
"name": "PA10",
"type": "bidirectional",
"description": "GPIO with WKUP1 wake-up, SEG2 LCD segment, LPT32_ETR and COMP1_INN1 comparator input functions."
},
{
"number": "9",
"name": "PB2",
"type": "bidirectional",
"description": "GPIO with WKUP2 wake-up, UART4_RX and ATIM_CH1N functions."
},
{
"number": "10",
"name": "PB3",
"type": "bidirectional",
"description": "GPIO with UART4_TX and ATIM_CH2N functions."
},
{
"number": "11",
"name": "PB8",
"type": "bidirectional",
"description": "GPIO with SEG7 LCD segment, SPI1_SSN and ATIM_CH3N functions."
},
{
"number": "12",
"name": "PB9",
"type": "bidirectional",
"description": "GPIO with SEG8 LCD segment, ANATST analog test, SPI1_SCK and GPT0_ETR functions."
},
{
"number": "13",
"name": "PB10",
"type": "bidirectional",
"description": "GPIO with SEG9 LCD segment, OPA1_INN1 input, SPI1_MISO and GPT0_CH1 functions."
},
{
"number": "14",
"name": "PB11",
"type": "bidirectional",
"description": "GPIO with SEG10 LCD segment, OPA1_INP1 input, SPI1_MOSI and GPT0_CH2 functions."
},
{
"number": "15",
"name": "PB13",
"type": "bidirectional",
"description": "GPIO with SEG11 LCD segment, OPA2_INN1 input, UART1_RX and LPUART1_RX functions."
},
{
"number": "16",
"name": "PB14",
"type": "bidirectional",
"description": "GPIO with SEG12 LCD segment, OPA2_INP1 input, UART1_TX and LPUART1_TX functions."
},
{
"number": "17",
"name": "PC2",
"type": "bidirectional",
"description": "GPIO with XTHIN high-frequency crystal input, UART1_RX and LPUART1_RX functions."
},
{
"number": "18",
"name": "PC3",
"type": "bidirectional",
"description": "GPIO with XTHOUT high-frequency crystal output, UART1_TX and LPUART1_TX functions."
},
{
"number": "19",
"name": "PC4",
"type": "bidirectional",
"description": "GPIO with SEG13 LCD segment, OPA1_OUT output and UART5_RX functions."
},
{
"number": "20",
"name": "PC5",
"type": "bidirectional",
"description": "GPIO with SEG14 LCD segment, OPA2_OUT output and UART5_TX functions."
},
{
"number": "21",
"name": "PC8",
"type": "bidirectional",
"description": "GPIO with SEG17 LCD segment, SPI2_SCK and ADC_IN9 functions."
},
{
"number": "22",
"name": "PC9",
"type": "bidirectional",
"description": "GPIO with SEG18 LCD segment, SPI2_MISO and ADC_IN0 functions."
},
{
"number": "23",
"name": "PC10",
"type": "bidirectional",
"description": "GPIO with WKUP5 wake-up, SEG19 LCD segment, SPI2_MOSI and ADC_IN1 functions."
},
{
"number": "24",
"name": "PD9",
"type": "bidirectional",
"description": "GPIO that doubles as XT32KO, the 32768 Hz crystal output."
},
{
"number": "25",
"name": "PD10",
"type": "bidirectional",
"description": "GPIO that doubles as XT32KI, the 32768 Hz crystal input."
},
{
"number": "26",
"name": "VDD15",
"type": "power_out",
"description": "LDO output; connect a 100 nF capacitor to ground (0.1~1 µF regulator capacitor per power section)."
},
{
"number": "27",
"name": "VSS",
"type": "power_in",
"description": "Ground."
},
{
"number": "28",
"name": "VDD",
"type": "power_in",
"description": "Main power supply, 1.8~5.5 V without USB use (FM33LC0xxN)."
},
{
"number": "29",
"name": "PD11",
"type": "bidirectional",
"description": "GPIO with WKUP6 wake-up, FOUT0 clock output, ATIM_BRK1 brake input and ADC_IN2 functions."
},
{
"number": "30",
"name": "PD0",
"type": "bidirectional",
"description": "GPIO with SEG22 LCD segment, UART5_RX and ADC_IN3 functions."
},
{
"number": "31",
"name": "PD1",
"type": "bidirectional",
"description": "GPIO with SEG23 LCD segment, UART5_TX and ADC_IN4 functions."
},
{
"number": "32",
"name": "PD7",
"type": "bidirectional",
"description": "GPIO that doubles as SWCLK, the SWD interface clock."
},
{
"number": "33",
"name": "EP",
"type": "passive",
"description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
}
],
"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: The datasheet text does not describe the exposed pad of the QFN32 package or give its connection (th; The N-variant pin table has blank cells for pins missing on a package. QFN32 numbers were assigned b; The VDD15 description combines the table text with the 0.1~1 µF figure from the power section. The V"
],
"pages_sent": 141,
"cost_usd": 0.9331,
"at": "2026-10-22T22:04:28"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/07233dfde9eabce59aac9f2feec44738.pdf",
"pages": 707,
"sha256": "6d623d96ef650faf",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 33,
"described": 33,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "fm33lc043n.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
5,
5,
0.875
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "5fa713ea46b36980895812ed853577889b7cb06d275041a39b99bc0be305dc79",
"checked": "2026-10-22",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "fm33lc043n-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
5,
5,
0.875
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "d86e5ceb2d13ce60caa143e4f3c031a125b9fbeec3b59749ce546f5a4db620f7",
"checked": "2026-10-22",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "FUDAN MICRO",
"Package": "QFN-32-EP(5x5)",
"Category": "Embedded Processors & Controllers",
"Pins": "33"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "6d623d96ef650faf0972cc57469b2162854d4e1c67526eedf93b5fcac27982d5",
"rows": [
{
"name": "Supply voltage VDD-VSS (incl. VDDA)",
"symbol": "VDD-VSS",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 6.5,
"conditions": "",
"source_page": 63,
"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": 63,
"source": "datasheet"
},
{
"name": "VDD to VDDA difference",
"symbol": "|ΔVDD|",
"kind": "absolute_maximum",
"unit": "mV",
"min": null,
"typ": null,
"max": 50,
"conditions": "",
"source_page": 63,
"source": "datasheet"
},
{
"name": "Difference between all ground pins",
"symbol": "|ΔVSS|",
"kind": "absolute_maximum",
"unit": "mV",
"min": null,
"typ": null,
"max": 50,
"conditions": "",
"source_page": 63,
"source": "datasheet"
},
{
"name": "Operating temperature",
"symbol": "TA",
"kind": "absolute_maximum",
"unit": "°C",
"min": -40,
"typ": null,
"max": 85,
"conditions": "",
"source_page": 63,
"source": "datasheet"
},
{
"name": "Storage temperature",
"symbol": "TSTG",
"kind": "absolute_maximum",
"unit": "°C",
"min": -55,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 63,
"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": 63,
"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": 63,
"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": 63,
"source": "datasheet"
},
{
"name": "IO latchup 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": 63,
"source": "datasheet"
},
{
"name": "IO latchup supply voltage",
"symbol": "Vsupply",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 8.25,
"conditions": "TA=25℃, JESD78E",
"source_page": 63,
"source": "datasheet"
},
{
"name": "Max current into VDD (source)",
"symbol": "∑IVDD",
"kind": "absolute_maximum",
"unit": "mA",
"min": null,
"typ": null,
"max": 90,
"conditions": "",
"source_page": 63,
"source": "datasheet"
},
{
"name": "Max current out of VSS (sink)",
"symbol": "∑IVSS",
"kind": "absolute_maximum",
"unit": "mA",
"min": null,
"typ": null,
"max": 70,
"conditions": "",
"source_page": 63,
"source": "datasheet"
},
{
"name": "Total IO sink current",
"symbol": "∑IIO",
"kind": "absolute_maximum",
"unit": "mA",
"min": null,
"typ": null,
"max": 90,
"conditions": "all IO sink",
"source_page": 63,
"source": "datasheet"
},
{
"name": "Total IO source current",
"symbol": "∑IIO",
"kind": "absolute_maximum",
"unit": "mA",
"min": null,
"typ": null,
"max": 70,
"conditions": "all IO source",
"source_page": 63,
"source": "datasheet"
},
{
"name": "AHB clock frequency",
"symbol": "fHCLK",
"kind": "recommended_operating",
"unit": "Mhz",
"min": 0,
"typ": null,
"max": 64,
"conditions": "",
"source_page": 64,
"source": "datasheet"
},
{
"name": "APB clock frequency",
"symbol": "fPCLK",
"kind": "recommended_operating",
"unit": "Mhz",
"min": 0,
"typ": null,
"max": 64,
"conditions": "",
"source_page": 64,
"source": "datasheet"
},
{
"name": "Operating voltage (no USB), BOR enabled",
"symbol": "VDD",
"kind": "recommended_operating",
"unit": "V",
"min": 1.8,
"typ": null,
"max": 5.5,
"conditions": "不使用 USB 功能, BOR 使能",
"source_page": 64,
"source": "datasheet"
},
{
"name": "Operating voltage (no USB), BOR off",
"symbol": "VDD",
"kind": "recommended_operating",
"unit": "V",
"min": 1.35,
"typ": null,
"max": 5.5,
"conditions": "不使用 USB 功能, BOR 关闭",
"source_page": 64,
"source": "datasheet"
},
{
"name": "Analog supply voltage (no USB)",
"symbol": "VDDA",
"kind": "recommended_operating",
"unit": "V",
"min": 1.8,
"typ": null,
"max": 5.5,
"conditions": "必须满足 VDDA=VDD",
"source_page": 64,
"source": "datasheet"
},
{
"name": "Junction temperature",
"symbol": "TJ",
"kind": "recommended_operating",
"unit": "°C",
"min": -40,
"typ": null,
"max": 105,
"conditions": "TA=-40~+85C",
"source_page": 64,
"source": "datasheet"
}
]
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"fm33lc043n"
],
"discovery_pitch": "FM33LC043N (FUDAN MICRO) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
"dependencies": {},
"hero": {
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"path": "docs/hero.png"
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"files": [
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"fm33lc043n.lbr",
"docs/hero.png",
"docs/fm33lc043n-datasheet.pdf",
"viewers/symbol.html",
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"visibility": {
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}
}