component
EFM8LB12F32E-C-QFP32
Public Made by Adomby adom
SILICON LABS Pre-ordered MCUs, VQFN-32-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
Ray
Publish 0.1.0
2df9ff4
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344
{
"slug": "efm8lb12f32e-c-qfp32",
"version": "0.1.0",
"type": "component",
"description": "SILICON LABS Pre-ordered MCUs, VQFN-32-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"embedded processors & controllers",
"efm8lb12f32e-c-qfp32",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"efm8lb12f32e-c-qfp32.kicad_sym",
"efm8lb12f32e-c-qfp32.kicad_mod",
"efm8lb12f32e-c-qfp32.glb",
"efm8lb12f32e-c-qfp32.step",
"efm8lb12f32e-c-qfp32.lbr",
"docs/hero.png",
"docs/efm8lb12f32e-c-qfp32-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"efm8lb12f32e-c-qfp32-hero.glb",
"efm8lb12f32e-c-qfp32-hero.overlay.json",
"efm8lb12f32e-c-qfp32-etched.glb"
],
"component": {
"mpn": "EFM8LB12F32E-C-QFP32",
"manufacturer": "SILICON LABS",
"package": "VQFN-32-EP(4x4)",
"pin_count": 33,
"category": "Embedded Processors & Controllers",
"subcategory": "Pre-ordered MCUs",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/0fe5101814c8c0abfa6efc96b2aee57c.pdf",
"parts": {
"symbol": "efm8lb12f32e-c-qfp32.kicad_sym",
"footprint": "efm8lb12f32e-c-qfp32.kicad_mod",
"model_3d": "efm8lb12f32e-c-qfp32-hero.glb",
"model_3d_plain": "efm8lb12f32e-c-qfp32-etched.glb",
"model_3d_step": "efm8lb12f32e-c-qfp32-etched.step",
"model_3d_step_plain": "efm8lb12f32e-c-qfp32.step",
"lbr": "efm8lb12f32e-c-qfp32.lbr"
},
"distributor_links": {
"lcsc": "C1340845",
"digikey": "EFM8LB12F32E-C-QFP32-ND",
"mouser": "634-LB12F32ECQFP32"
},
"distributor_check": {
"checked_at": "2026-10-28T16:07:53Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "EFM8LB12F32E-C-QFP32-ND",
"status": "found"
},
"mouser": {
"pn": "634-LB12F32ECQFP32",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "P0.0",
"type": "bidirectional",
"description": "Multifunction I/O pin with crossbar capability that also carries the VREF analog function."
},
{
"number": "2",
"name": "GND",
"type": "power_in",
"description": "Ground supply pin."
},
{
"number": "3",
"name": "VIO",
"type": "power_in",
"description": "I/O supply power input from which the external port I/O pins are powered."
},
{
"number": "4",
"name": "VDD",
"type": "power_in",
"description": "Supply power input for internal circuitry; device operation is specified from 2.2 V up to 3.6 V."
},
{
"number": "5",
"name": "RSTb / C2CK",
"type": "input",
"description": "Active-low reset input that doubles as the C2 debug clock."
},
{
"number": "6",
"name": "P3.7 / C2D",
"type": "bidirectional",
"description": "Multifunction I/O pin that is also the C2 debug data signal."
},
{
"number": "7",
"name": "P3.3",
"type": "bidirectional",
"description": "Multifunction I/O pin with DAC3 analog output function."
},
{
"number": "8",
"name": "P3.2",
"type": "bidirectional",
"description": "Multifunction I/O pin with DAC2 analog output function."
},
{
"number": "9",
"name": "P3.1",
"type": "bidirectional",
"description": "Multifunction I/O pin with DAC1 analog output function."
},
{
"number": "10",
"name": "P3.0",
"type": "bidirectional",
"description": "Multifunction I/O pin with DAC0 analog output function."
},
{
"number": "11",
"name": "P2.6",
"type": "bidirectional",
"description": "Multifunction I/O pin with ADC0 input 19 and comparator 1 inputs."
},
{
"number": "12",
"name": "P2.5",
"type": "bidirectional",
"description": "Multifunction I/O pin with CLU3 output and ADC0 input 18."
},
{
"number": "13",
"name": "P2.4",
"type": "bidirectional",
"description": "Multifunction I/O pin with ADC0 input 17 and comparator 1 inputs."
},
{
"number": "14",
"name": "P2.3",
"type": "bidirectional",
"description": "Crossbar-capable multifunction I/O pin with ADC0 input 16 and comparator 1 inputs."
},
{
"number": "15",
"name": "P2.2",
"type": "bidirectional",
"description": "Crossbar-capable multifunction I/O pin with CLU2 output and ADC0 input 15."
},
{
"number": "16",
"name": "P2.1",
"type": "bidirectional",
"description": "Crossbar-capable multifunction I/O pin with I2C0 SCL and ADC0 input 14."
},
{
"number": "17",
"name": "P2.0",
"type": "bidirectional",
"description": "Crossbar-capable multifunction I/O pin with I2C0 SDA and comparator 1 inputs."
},
{
"number": "18",
"name": "P1.7",
"type": "bidirectional",
"description": "Crossbar-capable multifunction I/O pin with ADC0 input 13 and comparator 0 inputs."
},
{
"number": "19",
"name": "P1.6",
"type": "bidirectional",
"description": "Crossbar-capable multifunction I/O pin with ADC0 input 12."
},
{
"number": "20",
"name": "P1.5",
"type": "bidirectional",
"description": "Crossbar-capable multifunction I/O pin with ADC0 input 11."
},
{
"number": "21",
"name": "P1.4",
"type": "bidirectional",
"description": "Crossbar-capable multifunction I/O pin with ADC0 input 10."
},
{
"number": "22",
"name": "P1.3",
"type": "bidirectional",
"description": "Crossbar-capable multifunction I/O pin with ADC0 input 9."
},
{
"number": "23",
"name": "P1.2",
"type": "bidirectional",
"description": "Crossbar-capable multifunction I/O pin with ADC0 input 8 and comparator 0 inputs."
},
{
"number": "24",
"name": "P1.1",
"type": "bidirectional",
"description": "Crossbar-capable multifunction I/O pin with ADC0 input 7 and comparator 0 inputs."
},
{
"number": "25",
"name": "P1.0",
"type": "bidirectional",
"description": "Crossbar-capable multifunction I/O pin with ADC0 input 6 and comparator 0 and comparator 1 inputs."
},
{
"number": "26",
"name": "P0.7",
"type": "bidirectional",
"description": "Crossbar-capable multifunction I/O pin with INT0.7/INT1.7, ADC0 input 5 and comparator inputs."
},
{
"number": "27",
"name": "P0.6",
"type": "bidirectional",
"description": "Crossbar-capable multifunction I/O pin that also serves as the CNVSTR ADC conversion start input, with ADC0 input 4."
},
{
"number": "28",
"name": "P0.5",
"type": "bidirectional",
"description": "Crossbar-capable multifunction I/O pin that carries the UART0 RX function and ADC0 input 3."
},
{
"number": "29",
"name": "P0.4",
"type": "bidirectional",
"description": "Crossbar-capable multifunction I/O pin that carries the UART0 TX function and ADC0 input 2."
},
{
"number": "30",
"name": "P0.3",
"type": "bidirectional",
"description": "Crossbar-capable multifunction I/O pin that also serves as the EXTCLK external clock input and EXTOSC oscillator function."
},
{
"number": "31",
"name": "P0.2",
"type": "bidirectional",
"description": "Crossbar-capable multifunction I/O pin with ADC0 input 1 and comparator 0 inputs."
},
{
"number": "32",
"name": "P0.1",
"type": "bidirectional",
"description": "Crossbar-capable multifunction I/O pin with ADC0 input 0 and comparator 0 inputs."
},
{
"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 hint VQFN-32-EP(4x4) does not match the MPN. Table 2.1 (page 4) lists EFM8LB12F32E-C-QFP32 as a ; Table 6.2 has no center/exposed pad entry for QFP32, and the AGND label printed after pin 32 is not "
],
"pages_sent": 45,
"cost_usd": 0.0459,
"at": "2026-10-28T16:07:31"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/0fe5101814c8c0abfa6efc96b2aee57c.pdf",
"pages": 77,
"sha256": "4bb882f3cda45564",
"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": "efm8lb12f32e-c-qfp32.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
4.0,
4.0,
0.6
],
"zmin_mm": 0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "7b482a511cdf2cf875c31931f9fea7f745b8dac2ea6203531cd6604f40a290cb",
"checked": "2026-10-28",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "efm8lb12f32e-c-qfp32-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
4.0,
4.0,
0.6
],
"zmin_mm": 0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "c0791cfc87f5186315c8b0f520e3bb36b827b6a27dcdbd23a850b34c568f7f32",
"checked": "2026-10-28",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
}
}