component
C8051F121-GQR
Public Made by Adomby adom
SILICON LABS SILICON LABS, TQFP-64(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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{
"schema_version": 1,
"type": "component",
"slug": "c8051f121-gqr",
"title": "C8051F121-GQR",
"brief": "SILICON LABS SILICON LABS, TQFP-64(10x10). 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",
"c8051f121-gqr",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "C8051F121-GQR",
"manufacturer": "SILICON LABS",
"package": "TQFP-64(10x10)",
"pin_count": 64,
"category": "Embedded Processors & Controllers",
"subcategory": "SILICON LABS",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/89a4c8f1a121dbedb2909908867caf80.pdf",
"parts": {
"symbol": "c8051f121-gqr.kicad_sym",
"footprint": "c8051f121-gqr.kicad_mod",
"model_3d": "c8051f121-gqr-hero.glb",
"model_3d_plain": "c8051f121-gqr.glb",
"model_3d_step": "c8051f121-gqr-etched.step",
"model_3d_step_plain": "c8051f121-gqr.step",
"lbr": "c8051f121-gqr.lbr"
},
"distributor_links": {
"lcsc": "C2931363",
"digikey": "336-4381-2-ND",
"mouser": "634-C8051F121-GQR"
},
"distributor_check": {
"checked_at": "2026-11-13T21:29:42Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "336-4381-2-ND",
"status": "found"
},
"mouser": {
"pn": "634-C8051F121-GQR",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "CP1-",
"type": "input",
"description": "Comparator 1 inverting input."
},
{
"number": "2",
"name": "CP1+",
"type": "input",
"description": "Comparator 1 non-inverting input."
},
{
"number": "3",
"name": "CP0-",
"type": "input",
"description": "Comparator 0 inverting input."
},
{
"number": "4",
"name": "CP0+",
"type": "input",
"description": "Comparator 0 non-inverting input."
},
{
"number": "5",
"name": "AGND",
"type": "power_in",
"description": "Analog ground; must be tied to ground."
},
{
"number": "6",
"name": "AV+",
"type": "power_in",
"description": "Analog supply voltage; must be tied to +2.7 to +3.6 V."
},
{
"number": "7",
"name": "VREF",
"type": "power_in",
"description": "Bandgap voltage reference output (all devices); DAC voltage reference input on C8051F121/3/5/7."
},
{
"number": "8",
"name": "VREFA",
"type": "input",
"description": "ADC0 and ADC2 voltage reference input."
},
{
"number": "9",
"name": "AIN0.0",
"type": "input",
"description": "ADC0 input channel 0."
},
{
"number": "10",
"name": "AIN0.1",
"type": "input",
"description": "ADC0 input channel 1."
},
{
"number": "11",
"name": "AIN0.2",
"type": "input",
"description": "ADC0 input channel 2."
},
{
"number": "12",
"name": "AIN0.3",
"type": "input",
"description": "ADC0 input channel 3."
},
{
"number": "13",
"name": "AIN0.4",
"type": "input",
"description": "ADC0 input channel 4."
},
{
"number": "14",
"name": "AIN0.5",
"type": "input",
"description": "ADC0 input channel 5."
},
{
"number": "15",
"name": "AIN0.6",
"type": "input",
"description": "ADC0 input channel 6."
},
{
"number": "16",
"name": "AIN0.7",
"type": "input",
"description": "ADC0 input channel 7."
},
{
"number": "17",
"name": "XTAL1",
"type": "input",
"description": "Crystal input, the return for the internal oscillator circuit for a crystal or ceramic resonator; becomes the system clock if overdriven by an external CMOS clock."
},
{
"number": "18",
"name": "XTAL2",
"type": "output",
"description": "Crystal output; excitation driver for a crystal or ceramic resonator."
},
{
"number": "19",
"name": "MONEN",
"type": "input",
"description": "VDD monitor enable; tied high enables the internal VDD monitor that resets the system when VDD < VRST, tied low disables it, and must be tied high or low."
},
{
"number": "20",
"name": "AIN2.7/A15/P1.7",
"type": "bidirectional",
"description": "ADC2 input channel 7, external memory address bit 15 (non-multiplexed mode), or Port 1.7."
},
{
"number": "21",
"name": "AIN2.6/A14/P1.6",
"type": "bidirectional",
"description": "ADC2 input channel 6, external memory address bit 14 (non-multiplexed mode), or Port 1.6."
},
{
"number": "22",
"name": "AIN2.5/A13/P1.5",
"type": "bidirectional",
"description": "ADC2 input channel 5, external memory address bit 13 (non-multiplexed mode), or Port 1.5."
},
{
"number": "23",
"name": "AIN2.4/A12/P1.4",
"type": "bidirectional",
"description": "ADC2 input channel 4, external memory address bit 12 (non-multiplexed mode), or Port 1.4."
},
{
"number": "24",
"name": "VDD",
"type": "power_in",
"description": "Digital supply voltage; must be tied to +2.7 to +3.6 V."
},
{
"number": "25",
"name": "DGND",
"type": "power_in",
"description": "Digital ground; must be tied to ground."
},
{
"number": "26",
"name": "AIN2.3/A11/P1.3",
"type": "bidirectional",
"description": "ADC2 input channel 3, external memory address bit 11 (non-multiplexed mode), or Port 1.3."
},
{
"number": "27",
"name": "AIN2.2/A10/P1.2",
"type": "bidirectional",
"description": "ADC2 input channel 2, external memory address bit 10 (non-multiplexed mode), or Port 1.2."
},
{
"number": "28",
"name": "AIN2.1/A9/P1.1",
"type": "bidirectional",
"description": "ADC2 input channel 1, external memory address bit 9 (non-multiplexed mode), or Port 1.1."
},
{
"number": "29",
"name": "AIN2.0/A8/P1.0",
"type": "bidirectional",
"description": "ADC2 input channel 0, external memory address bit 8 (non-multiplexed mode), or Port 1.0."
},
{
"number": "30",
"name": "A15m/A7/P2.7",
"type": "bidirectional",
"description": "External memory address bit 15 (multiplexed) or bit 7 (non-multiplexed), or Port 2.7."
},
{
"number": "31",
"name": "A14m/A6/P2.6",
"type": "bidirectional",
"description": "External memory address bit 14 (multiplexed) or bit 6 (non-multiplexed), or Port 2.6."
},
{
"number": "32",
"name": "A13m/A5/P2.5",
"type": "bidirectional",
"description": "External memory address bit 13 (multiplexed) or bit 5 (non-multiplexed), or Port 2.5."
},
{
"number": "33",
"name": "A12m/A4/P2.4",
"type": "bidirectional",
"description": "External memory address bit 12 (multiplexed) or bit 4 (non-multiplexed), or Port 2.4."
},
{
"number": "34",
"name": "A11m/A3/P2.3",
"type": "bidirectional",
"description": "External memory address bit 11 (multiplexed) or bit 3 (non-multiplexed), or Port 2.3."
},
{
"number": "35",
"name": "A10m/A2/P2.2",
"type": "bidirectional",
"description": "External memory address bit 10 (multiplexed) or bit 2 (non-multiplexed), or Port 2.2."
},
{
"number": "36",
"name": "A9m/A1/P2.1",
"type": "bidirectional",
"description": "External memory address bit 9 (multiplexed) or bit 1 (non-multiplexed), or Port 2.1."
},
{
"number": "37",
"name": "A8m/A0/P2.0",
"type": "bidirectional",
"description": "External memory address bit 8 (multiplexed) or bit 0 (non-multiplexed), or Port 2.0."
},
{
"number": "38",
"name": "AD7/D7/P3.7",
"type": "bidirectional",
"description": "External memory address/data bit 7 (multiplexed) or data bit 7 (non-multiplexed), or Port 3.7."
},
{
"number": "39",
"name": "AD6/D6/P3.6",
"type": "bidirectional",
"description": "External memory address/data bit 6 (multiplexed) or data bit 6 (non-multiplexed), or Port 3.6."
},
{
"number": "40",
"name": "DGND",
"type": "power_in",
"description": "Digital ground; must be tied to ground."
},
{
"number": "41",
"name": "VDD",
"type": "power_in",
"description": "Digital supply voltage; must be tied to +2.7 to +3.6 V."
},
{
"number": "42",
"name": "AD5/D5/P3.5",
"type": "bidirectional",
"description": "External memory address/data bit 5 (multiplexed) or data bit 5 (non-multiplexed), or Port 3.5."
},
{
"number": "43",
"name": "AD4/D4/P3.4",
"type": "bidirectional",
"description": "External memory address/data bit 4 (multiplexed) or data bit 4 (non-multiplexed), or Port 3.4."
},
{
"number": "44",
"name": "AD3/D3/P3.3",
"type": "bidirectional",
"description": "External memory address/data bit 3 (multiplexed) or data bit 3 (non-multiplexed), or Port 3.3."
},
{
"number": "45",
"name": "AD2/D2/P3.2",
"type": "bidirectional",
"description": "External memory address/data bit 2 (multiplexed) or data bit 2 (non-multiplexed), or Port 3.2."
},
{
"number": "46",
"name": "AD1/D1/P3.1",
"type": "bidirectional",
"description": "External memory address/data bit 1 (multiplexed) or data bit 1 (non-multiplexed), or Port 3.1."
},
{
"number": "47",
"name": "AD0/D0/P3.0",
"type": "bidirectional",
"description": "External memory address/data bit 0 (multiplexed) or data bit 0 (non-multiplexed), or Port 3.0."
},
{
"number": "48",
"name": "WR/P0.7",
"type": "bidirectional",
"description": "/WR strobe for the external memory bus, or Port 0.7."
},
{
"number": "49",
"name": "RD/P0.6",
"type": "bidirectional",
"description": "/RD strobe for the external memory bus, or Port 0.6."
},
{
"number": "50",
"name": "ALE/P0.5",
"type": "bidirectional",
"description": "ALE strobe for the external memory address bus (multiplexed mode), or Port 0.5."
},
{
"number": "51",
"name": "P0.4",
"type": "bidirectional",
"description": "Port 0.4 general-purpose I/O or crossbar-assigned digital function."
},
{
"number": "52",
"name": "P0.3",
"type": "bidirectional",
"description": "Port 0.3 general-purpose I/O or crossbar-assigned digital function."
},
{
"number": "53",
"name": "P0.2",
"type": "bidirectional",
"description": "Port 0.2 general-purpose I/O or crossbar-assigned digital function."
},
{
"number": "54",
"name": "P0.1",
"type": "bidirectional",
"description": "Port 0.1 general-purpose I/O or crossbar-assigned digital function (RX0 when UART0 is enabled)."
},
{
"number": "55",
"name": "P0.0",
"type": "bidirectional",
"description": "Port 0.0 general-purpose I/O or crossbar-assigned digital function (TX0 when UART0 is enabled)."
},
{
"number": "56",
"name": "DGND",
"type": "power_in",
"description": "Digital ground; must be tied to ground."
},
{
"number": "57",
"name": "VDD",
"type": "power_in",
"description": "Digital supply voltage; must be tied to +2.7 to +3.6 V."
},
{
"number": "58",
"name": "TMS",
"type": "input",
"description": "JTAG test mode select with internal pullup."
},
{
"number": "59",
"name": "TCK",
"type": "input",
"description": "JTAG test clock with internal pullup."
},
{
"number": "60",
"name": "TDI",
"type": "input",
"description": "JTAG test data input with internal pullup, latched on the rising edge of TCK."
},
{
"number": "61",
"name": "TDO",
"type": "tri_state",
"description": "JTAG test data output with internal pullup, shifted out on the falling edge of TCK; tri-state driver."
},
{
"number": "62",
"name": "RST",
"type": "bidirectional",
"description": "Device reset; open-drain output of internal VDD monitor, driven low when VDD < VRST and MONEN is high; an external source can force a reset by driving it low."
},
{
"number": "63",
"name": "DAC1",
"type": "output",
"description": "Digital-to-analog converter 1 voltage output."
},
{
"number": "64",
"name": "DAC0",
"type": "output",
"description": "Digital-to-analog converter 0 voltage output."
}
],
"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 covers multiple parts. The MPN C8051F121-GQR was mapped to the 'F121/3/5/7 TQFP-64 col; Pin types for the mixed analog/digital port pins (P1.x/AIN2.x) are set to bidirectional. The datashe"
],
"pages_sent": 52,
"cost_usd": 0.504,
"at": "2026-11-13T21:29:29"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/89a4c8f1a121dbedb2909908867caf80.pdf",
"pages": 350,
"sha256": "24fdae17f6f8efe6",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 64,
"described": 64,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "c8051f121-gqr.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
12,
12,
1.1
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "60567e81b0770b6c519104183a7a05ba52dddc11146b5fbe21434fbb5801696c",
"checked": "2026-11-13",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "c8051f121-gqr-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
12,
12,
1.1
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "18473b95a12dd2a9a563e37339fdf3be291bed259c5408ce21260f9dff171907",
"checked": "2026-11-13",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
],
"package_dims": {
"package_code": "TQFP-64",
"source_page": 54,
"D": {
"nom_mm": 10,
"range_mm": [
null,
null
]
},
"E1": {
"nom_mm": 10,
"range_mm": [
null,
null
]
},
"E": {
"nom_mm": 12,
"range_mm": [
null,
null
]
},
"e": {
"nom_mm": 0.5,
"range_mm": [
null,
null
]
},
"A": {
"nom_mm": 1.2,
"range_mm": [
null,
1.2
]
},
"source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
"model_check": {
"file": "c8051f121-gqr.step",
"verdict": "PASS",
"reasons": [
"height and body within the datasheet's package drawing"
],
"by": "factory/package_fit.py"
}
}
},
"metadata": {
"specs": {
"Manufacturer": "SILICON LABS",
"Package": "TQFP-64(10x10)",
"Category": "Embedded Processors & Controllers",
"Pins": "64"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "24fdae17f6f8efe6fff9d72f054488a3b133ec43c866de977a9475294c442382",
"rows": [
{
"name": "Analog Supply Voltage",
"symbol": "AV+",
"kind": "electrical",
"unit": "V",
"min": 2.7,
"typ": 3,
"max": 3.6,
"conditions": "SYSCLK = 0 to 50 MHz",
"source_page": 39,
"source": "datasheet"
},
{
"name": "Analog Supply Voltage",
"symbol": "AV+",
"kind": "electrical",
"unit": "V",
"min": 3,
"typ": 3.3,
"max": 3.6,
"conditions": "SYSCLK > 50 MHz",
"source_page": 39,
"source": "datasheet"
},
{
"name": "Digital Supply Voltage",
"symbol": "VDD",
"kind": "electrical",
"unit": "V",
"min": 2.7,
"typ": 3,
"max": 3.6,
"conditions": "SYSCLK = 0 to 50 MHz",
"source_page": 39,
"source": "datasheet"
},
{
"name": "Digital Supply Voltage",
"symbol": "VDD",
"kind": "electrical",
"unit": "V",
"min": 3,
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