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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{
"slug": "fm33lc043n",
"version": "0.1.0",
"type": "component",
"description": "FUDAN MICRO Other Processors and Microcontrollers (MCUs), QFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"embedded processors & controllers",
"fm33lc043n",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"fm33lc043n.kicad_sym",
"fm33lc043n.kicad_mod",
"fm33lc043n.glb",
"fm33lc043n.step",
"fm33lc043n.lbr",
"docs/hero.png",
"docs/fm33lc043n-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"fm33lc043n-hero.glb",
"fm33lc043n-hero.overlay.json",
"fm33lc043n-etched.glb"
],
"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": [
5.0,
5.0,
0.875
],
"zmin_mm": 0.0,
"centre_offset_mm": 0.0,
"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": [
5.0,
5.0,
0.875
],
"zmin_mm": 0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "d86e5ceb2d13ce60caa143e4f3c031a125b9fbeec3b59749ce546f5a4db620f7",
"checked": "2026-10-22",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
}
}