component
C8051F381-GM
Public Made by Adomby adom
SILICON LABS Microcontroller Units (MCUs/MPUs/SOCs), QFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
Ray
Publish 0.1.0
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{
"slug": "c8051f381-gm",
"version": "0.1.0",
"type": "component",
"description": "SILICON LABS Microcontroller Units (MCUs/MPUs/SOCs), QFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"embedded processors & controllers",
"c8051f381-gm",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"c8051f381-gm.kicad_sym",
"c8051f381-gm.kicad_mod",
"c8051f381-gm.glb",
"c8051f381-gm.step",
"c8051f381-gm.lbr",
"docs/hero.png",
"docs/c8051f381-gm-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"c8051f381-gm-hero.glb",
"c8051f381-gm-hero.overlay.json",
"c8051f381-gm-etched.glb"
],
"component": {
"mpn": "C8051F381-GM",
"manufacturer": "SILICON LABS",
"package": "QFN-32-EP(5x5)",
"pin_count": 33,
"category": "Embedded Processors & Controllers",
"subcategory": "Microcontroller Units (MCUs/MPUs/SOCs)",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/56d9ae2ac88fdd941f8660e1332c513a.pdf",
"parts": {
"symbol": "c8051f381-gm.kicad_sym",
"footprint": "c8051f381-gm.kicad_mod",
"model_3d": "c8051f381-gm-hero.glb",
"model_3d_plain": "c8051f381-gm-etched.glb",
"model_3d_step": "c8051f381-gm-etched.step",
"model_3d_step_plain": "c8051f381-gm.step",
"lbr": "c8051f381-gm.lbr"
},
"distributor_links": {
"lcsc": "C1522096",
"digikey": "336-2022-ND",
"mouser": "634-C8051F381-GM"
},
"distributor_check": {
"checked_at": "2026-10-30T22:48:58Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "336-2022-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "634-C8051F381-GM",
"status": "found",
"lifecycle": "Not Recommended for New Designs"
}
},
"pins": [
{
"number": "1",
"name": "P0.1",
"type": "bidirectional",
"description": "Port 0.1 digital I/O (push-pull or open-drain) or analog input, assignable to peripherals through the crossbar."
},
{
"number": "2",
"name": "P0.0",
"type": "bidirectional",
"description": "Port 0.0 digital I/O (push-pull or open-drain) or analog input, assignable to peripherals through the crossbar."
},
{
"number": "3",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "4",
"name": "D+",
"type": "bidirectional",
"description": "USB D+ signal pin."
},
{
"number": "5",
"name": "D-",
"type": "bidirectional",
"description": "USB D- signal pin."
},
{
"number": "6",
"name": "VDD",
"type": "power_in",
"description": "Power supply voltage input of 2.7-3.6 V; the same pin also carries the 3.3 V voltage regulator output."
},
{
"number": "7",
"name": "REGIN",
"type": "power_in",
"description": "5 V regulator input to the on-chip voltage regulator."
},
{
"number": "8",
"name": "VBUS",
"type": "power_in",
"description": "VBUS sense input connected to the USB VBUS signal; a 5 V signal on this pin indicates a USB connection."
},
{
"number": "9",
"name": "RST/C2CK",
"type": "bidirectional",
"description": "Device reset: open-drain output of the internal POR or VDD monitor, and an external source driving it low for at least 15 µs initiates a system reset; also the C2 debug interface clock."
},
{
"number": "10",
"name": "P3.0/C2D",
"type": "bidirectional",
"description": "Port 3.0 digital I/O or analog input; also the bi-directional data signal for the C2 debug interface."
},
{
"number": "11",
"name": "P2.7",
"type": "bidirectional",
"description": "Port 2.7 digital I/O (push-pull or open-drain) or analog input, assignable to peripherals through the crossbar."
},
{
"number": "12",
"name": "P2.6",
"type": "bidirectional",
"description": "Port 2.6 digital I/O (push-pull or open-drain) or analog input, assignable to peripherals through the crossbar."
},
{
"number": "13",
"name": "P2.5",
"type": "bidirectional",
"description": "Port 2.5 digital I/O (push-pull or open-drain) or analog input, assignable to peripherals through the crossbar."
},
{
"number": "14",
"name": "P2.4",
"type": "bidirectional",
"description": "Port 2.4 digital I/O (push-pull or open-drain) or analog input, assignable to peripherals through the crossbar."
},
{
"number": "15",
"name": "P2.3",
"type": "bidirectional",
"description": "Port 2.3 digital I/O (push-pull or open-drain) or analog input, assignable to peripherals through the crossbar."
},
{
"number": "16",
"name": "P2.2",
"type": "bidirectional",
"description": "Port 2.2 digital I/O (push-pull or open-drain) or analog input, assignable to peripherals through the crossbar."
},
{
"number": "17",
"name": "P2.1",
"type": "bidirectional",
"description": "Port 2.1 digital I/O (push-pull or open-drain) or analog input, assignable to peripherals through the crossbar."
},
{
"number": "18",
"name": "P2.0",
"type": "bidirectional",
"description": "Port 2.0 digital I/O (push-pull or open-drain) or analog input, assignable to peripherals through the crossbar."
},
{
"number": "19",
"name": "P1.7",
"type": "bidirectional",
"description": "Port 1.7 digital I/O (push-pull or open-drain) or analog input, assignable to peripherals through the crossbar."
},
{
"number": "20",
"name": "P1.6",
"type": "bidirectional",
"description": "Port 1.6 digital I/O (push-pull or open-drain) or analog input, assignable to peripherals through the crossbar."
},
{
"number": "21",
"name": "P1.5",
"type": "bidirectional",
"description": "Port 1.5 digital I/O (push-pull or open-drain) or analog input, assignable to peripherals through the crossbar."
},
{
"number": "22",
"name": "P1.4",
"type": "bidirectional",
"description": "Port 1.4 digital I/O (push-pull or open-drain) or analog input, assignable to peripherals through the crossbar."
},
{
"number": "23",
"name": "P1.3",
"type": "bidirectional",
"description": "Port 1.3 digital I/O (push-pull or open-drain) or analog input, assignable to peripherals through the crossbar."
},
{
"number": "24",
"name": "P1.2",
"type": "bidirectional",
"description": "Port 1.2 digital I/O (push-pull or open-drain) or analog input, assignable to peripherals through the crossbar."
},
{
"number": "25",
"name": "P1.1",
"type": "bidirectional",
"description": "Port 1.1 digital I/O (push-pull or open-drain) or analog input, assignable to peripherals through the crossbar."
},
{
"number": "26",
"name": "P1.0",
"type": "bidirectional",
"description": "Port 1.0 digital I/O (push-pull or open-drain) or analog input, assignable to peripherals through the crossbar."
},
{
"number": "27",
"name": "P0.7",
"type": "bidirectional",
"description": "Port 0.7 digital I/O (push-pull or open-drain) or analog input, assignable to peripherals through the crossbar."
},
{
"number": "28",
"name": "P0.6",
"type": "bidirectional",
"description": "Port 0.6 digital I/O (push-pull or open-drain) or analog input, assignable to peripherals through the crossbar."
},
{
"number": "29",
"name": "P0.5",
"type": "bidirectional",
"description": "Port 0.5 digital I/O (push-pull or open-drain) or analog input; UART RX0 is fixed to this pin for bootloading."
},
{
"number": "30",
"name": "P0.4",
"type": "bidirectional",
"description": "Port 0.4 digital I/O (push-pull or open-drain) or analog input; UART TX0 is fixed to this pin for bootloading."
},
{
"number": "31",
"name": "P0.3",
"type": "bidirectional",
"description": "Port 0.3 digital I/O (push-pull or open-drain) or analog input, assignable to peripherals through the crossbar."
},
{
"number": "32",
"name": "P0.2",
"type": "bidirectional",
"description": "Port 0.2 digital I/O (push-pull or open-drain) or analog input, assignable to peripherals through the crossbar."
},
{
"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-haiku-5-5",
"primary_mode": "text",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: The QFN-32 exposed thermal pad is labelled 'GND (optional)' in Figure 3.7 (page 31) but has no numbe; Table 3.1 lists the VDD pin as both 'Power In' and 'Power Out' (3.3 V regulator output); it is recor; RST/C2CK and P3.0/C2D share pins with debug functions; types were mapped to bidirectional from the d",
"exposed pad 33 added from the footprint"
],
"pages_sent": 32,
"cost_usd": 0.1433,
"at": "2026-10-30T22:48:39"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/56d9ae2ac88fdd941f8660e1332c513a.pdf",
"pages": 321,
"sha256": "1e2365a43af9ad55",
"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": "c8051f381-gm.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": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "c8051f381-gm-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": "2be471ce46e02606a66ada85ae34140108897e59df8f0bc884fff386fa905e81",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
],
"package_dims": {
"package_code": "QFN-32",
"source_page": 32,
"D": {
"nom_mm": 5.0,
"range_mm": [
null,
null
]
},
"E1": {
"nom_mm": 5.0,
"range_mm": [
null,
null
]
},
"e": {
"nom_mm": 0.5,
"range_mm": [
null,
null
]
},
"A": {
"nom_mm": 0.85,
"range_mm": [
0.8,
0.9
]
},
"source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
"model_check": {
"file": "c8051f381-gm.step",
"verdict": "PASS",
"reasons": [
"height within the datasheet's package drawing"
],
"by": "factory/package_fit.py"
}
}
}
}