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nRF51822-QFAA-R
Public Made by Adomby adom
Nordic Semicon Microcontrollers (MCU/MPU/SOC), QFN-48-EP(6x6). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+85@@ -0,0 +1,85 @@+# nRF51822-QFAA-R++**Nordic Semicon** · Microcontrollers (MCU/MPU/SOC) · QFN-48-EP(6x6)++nRF51822-QFAA-R from Nordic Semicon, in a QFN-48-EP(6x6). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | VDD | power_in | Power supply input, 1.8 V to 3.6 V. |+| 2 | DCC | power_out | DC/DC converter output voltage to external LC filter for power supply decoupling. |+| 3 | P0.30 | bidirectional | General purpose I/O pin P0.30 with configurable input/output direction. |+| 4 | P0.00 | bidirectional | General purpose I/O pin P0.00, also serves as ADC/LPCOMP reference input 0. |+| 5 | P0.01 | bidirectional | General purpose I/O pin P0.01, also serves as ADC/LPCOMP analog input 2. |+| 6 | P0.02 | bidirectional | General purpose I/O pin P0.02, also serves as ADC/LPCOMP analog input 3. |+| 7 | P0.03 | bidirectional | General purpose I/O pin P0.03, also serves as ADC/LPCOMP analog input 4. |+| 8 | P0.04 | bidirectional | General purpose I/O pin P0.04, also serves as ADC/LPCOMP analog input 5. |+| 9 | P0.05 | bidirectional | General purpose I/O pin P0.05, also serves as ADC/LPCOMP analog input 6. |+| 10 | P0.06 | bidirectional | General purpose I/O pin P0.06, also serves as ADC/LPCOMP input 7 and reference input 1. |+| 11 | P0.07 | bidirectional | General purpose I/O pin P0.07 with configurable input/output direction. |+| 12 | VDD | power_in | Power supply input, 1.8 V to 3.6 V. |+| 13 | VSS | power_in | Ground (0 V), must be connected to PCB ground plane. |+| 14 | P0.08 | bidirectional | General purpose I/O pin P0.08 with configurable input/output direction. |+| 15 | P0.09 | bidirectional | General purpose I/O pin P0.09 with configurable input/output direction. |+| 16 | P0.10 | bidirectional | General purpose I/O pin P0.10 with configurable input/output direction. |+| 17 | P0.11 | bidirectional | General purpose I/O pin P0.11 with configurable input/output direction. |+| 18 | P0.12 | bidirectional | General purpose I/O pin P0.12 with configurable input/output direction. |+| 19 | P0.13 | bidirectional | General purpose I/O pin P0.13 with configurable input/output direction. |+| 20 | P0.14 | bidirectional | General purpose I/O pin P0.14 with configurable input/output direction. |+| 21 | P0.15 | bidirectional | General purpose I/O pin P0.15 with configurable input/output direction. |+| 22 | P0.16 | bidirectional | General purpose I/O pin P0.16 with configurable input/output direction. |+| 23 | SWDIO/nRESET | bidirectional | System reset (active low) and Serial Wire Debug I/O, also configurable as GPIO. |+| 24 | SWDCLK | input | Serial Wire Debug clock input, must be kept low during device reset. |+| 25 | P0.17 | bidirectional | General purpose I/O pin P0.17 with configurable input/output direction. |+| 26 | P0.18 | bidirectional | General purpose I/O pin P0.18 with configurable input/output direction. |+| 27 | P0.19 | bidirectional | General purpose I/O pin P0.19 with configurable input/output direction. |+| 28 | P0.20 | bidirectional | General purpose I/O pin P0.20 with configurable input/output direction. |+| 29 | DEC2 | power_in | Power supply decoupling pin, connect 100 nF to 1 μF capacitor to ground. |+| 30 | VDD_PA | power_out | RF power amplifier supply output (+1.6 V), requires external LC filtering. |+| 31 | ANT1 | passive | Differential RF antenna connection for 2.4 GHz transceiver transmit and receive. |+| 32 | ANT2 | passive | Differential RF antenna connection for 2.4 GHz transceiver transmit and receive. |+| 33 | VSS | power_in | Ground (0 V), must be connected to PCB ground plane. |+| 34 | VSS | power_in | Ground (0 V), must be connected to PCB ground plane. |+| 35 | AVDD | power_in | Analog power supply input, 1.8 V to 3.6 V. |+| 36 | AVDD | power_in | Analog power supply input, 1.8 V to 3.6 V. |+| 37 | XC1 | passive | 16/32 MHz crystal oscillator connection for external crystal or clock reference. |+| 38 | XC2 | passive | 16/32 MHz crystal oscillator connection for external crystal. |+| 39 | DEC1 | power_in | Power supply decoupling pin, connect 1 nF to 47 nF capacitor to ground. |+| 40 | P0.21 | bidirectional | General purpose I/O pin P0.21 with configurable input/output direction. |+| 41 | P0.22 | bidirectional | General purpose I/O pin P0.22 with configurable input/output direction. |+| 42 | P0.23 | bidirectional | General purpose I/O pin P0.23 with configurable input/output direction. |+| 43 | P0.24 | bidirectional | General purpose I/O pin P0.24 with configurable input/output direction. |+| 44 | P0.25 | bidirectional | General purpose I/O pin P0.25 with configurable input/output direction. |+| 45 | P0.26 | bidirectional | General purpose I/O pin P0.26, also serves as ADC input 0 and 32.768 kHz crystal output. |+| 46 | P0.27 | bidirectional | General purpose I/O pin P0.27, also serves as ADC input 1 and 32.768 kHz crystal input/reference. |+| 47 | P0.28 | bidirectional | General purpose I/O pin P0.28 with configurable input/output direction. |+| 48 | P0.29 | bidirectional | General purpose I/O pin P0.29 with configurable input/output direction. |+| 49 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Nordic Semicon |+| Package | QFN-48-EP(6x6) |+| Category | Embedded Processors & Controllers |+| Pins | 49 |++## CAD (KiCad official)++- Symbol: `nRF51822-QFAA-R`+- Footprint: `Package_DFN_QFN:QFN-48-1EP_6x6mm_P0.4mm_EP4.4x4.4mm`+- 3D model: QFN-48-EP(6x6), generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.9 mm nominal QFN height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)+- 3D model files: `nrf51822-qfaa-r-etched.step` / `nrf51822-qfaa-r-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `nrf51822-qfaa-r.step` / `nrf51822-qfaa-r.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Nordic Semicon datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586175089775136768) (72 pp, sha256 `9132b1856f61beae`, retrieved 2026-10-01, tier: lcsc)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-4-6` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/nrf51822-qfaa-r-datasheet.pdf)
page.jsonadded+402@@ -0,0 +1,402 @@+{+ "slug": "nrf51822-qfaa-r",+ "version": "0.1.0",+ "type": "component",+ "description": "Nordic Semicon Microcontrollers (MCU/MPU/SOC), QFN-48-EP(6x6). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "embedded processors & controllers",+ "nrf51822-qfaa-r",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "nrf51822-qfaa-r.kicad_sym",+ "nrf51822-qfaa-r.kicad_mod",+ "nrf51822-qfaa-r.glb",+ "nrf51822-qfaa-r.step",+ "nrf51822-qfaa-r.lbr",+ "docs/hero.png",+ "docs/nrf51822-qfaa-r-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "nRF51822-QFAA-R",+ "manufacturer": "Nordic Semicon",+ "package": "QFN-48-EP(6x6)",+ "pin_count": 49,+ "category": "Embedded Processors & Controllers",+ "subcategory": "Microcontrollers (MCU/MPU/SOC)",+ "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586175089775136768",+ "parts": {+ "symbol": "nrf51822-qfaa-r.kicad_sym",+ "footprint": "nrf51822-qfaa-r.kicad_mod",+ "model_3d": "nrf51822-qfaa-r-etched.glb",+ "model_3d_plain": "nrf51822-qfaa-r.glb",+ "model_3d_step": "nrf51822-qfaa-r-etched.step",+ "model_3d_step_plain": "nrf51822-qfaa-r.step",+ "lbr": "nrf51822-qfaa-r.lbr"+ },+ "distributor_links": {+ "lcsc": "C38167",+ "digikey": "NRF51822-QFAA-R-ND",+ "mouser": "949-NRF51822-QFAA-R"+ },+ "distributor_check": {+ "checked_at": "2026-10-01T17:32:33Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "NRF51822-QFAA-R-ND",+ "status": "found"+ },+ "mouser": {+ "pn": "949-NRF51822-QFAA-R",+ "status": "found",+ "lifecycle": "Obsolete"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "VDD",+ "type": "power_in",+ "description": "Power supply input, 1.8 V to 3.6 V."+ },+ {+ "number": "2",+ "name": "DCC",+ "type": "power_out",+ "description": "DC/DC converter output voltage to external LC filter for power supply decoupling."+ },+ {+ "number": "3",+ "name": "P0.30",+ "type": "bidirectional",+ "description": "General purpose I/O pin P0.30 with configurable input/output direction."+ },+ {+ "number": "4",+ "name": "P0.00",+ "type": "bidirectional",+ "description": "General purpose I/O pin P0.00, also serves as ADC/LPCOMP reference input 0."+ },+ {+ "number": "5",+ "name": "P0.01",+ "type": "bidirectional",+ "description": "General purpose I/O pin P0.01, also serves as ADC/LPCOMP analog input 2."+ },+ {+ "number": "6",+ "name": "P0.02",+ "type": "bidirectional",+ "description": "General purpose I/O pin P0.02, also serves as ADC/LPCOMP analog input 3."+ },+ {+ "number": "7",+ "name": "P0.03",+ "type": "bidirectional",+ "description": "General purpose I/O pin P0.03, also serves as ADC/LPCOMP analog input 4."+ },+ {+ "number": "8",+ "name": "P0.04",+ "type": "bidirectional",+ "description": "General purpose I/O pin P0.04, also serves as ADC/LPCOMP analog input 5."+ },+ {+ "number": "9",+ "name": "P0.05",+ "type": "bidirectional",+ "description": "General purpose I/O pin P0.05, also serves as ADC/LPCOMP analog input 6."+ },+ {+ "number": "10",+ "name": "P0.06",+ "type": "bidirectional",+ "description": "General purpose I/O pin P0.06, also serves as ADC/LPCOMP input 7 and reference input 1."+ },+ {+ "number": "11",+ "name": "P0.07",+ "type": "bidirectional",+ "description": "General purpose I/O pin P0.07 with configurable input/output direction."+ },+ {+ "number": "12",+ "name": "VDD",+ "type": "power_in",+ "description": "Power supply input, 1.8 V to 3.6 V."+ },+ {+ "number": "13",+ "name": "VSS",+ "type": "power_in",+ "description": "Ground (0 V), must be connected to PCB ground plane."+ },+ {+ "number": "14",+ "name": "P0.08",+ "type": "bidirectional",+ "description": "General purpose I/O pin P0.08 with configurable input/output direction."+ },+ {+ "number": "15",+ "name": "P0.09",+ "type": "bidirectional",+ "description": "General purpose I/O pin P0.09 with configurable input/output direction."+ },+ {+ "number": "16",+ "name": "P0.10",+ "type": "bidirectional",+ "description": "General purpose I/O pin P0.10 with configurable input/output direction."+ },+ {+ "number": "17",+ "name": "P0.11",+ "type": "bidirectional",+ "description": "General purpose I/O pin P0.11 with configurable input/output direction."+ },+ {+ "number": "18",+ "name": "P0.12",+ "type": "bidirectional",+ "description": "General purpose I/O pin P0.12 with configurable input/output direction."+ },+ {+ "number": "19",+ "name": "P0.13",+ "type": "bidirectional",+ "description": "General purpose I/O pin P0.13 with configurable input/output direction."+ },+ {+ "number": "20",+ "name": "P0.14",+ "type": "bidirectional",+ "description": "General purpose I/O pin P0.14 with configurable input/output direction."+ },+ {+ "number": "21",+ "name": "P0.15",+ "type": "bidirectional",+ "description": "General purpose I/O pin P0.15 with configurable input/output direction."+ },+ {+ "number": "22",+ "name": "P0.16",+ "type": "bidirectional",+ "description": "General purpose I/O pin P0.16 with configurable input/output direction."+ },+ {+ "number": "23",+ "name": "SWDIO/nRESET",+ "type": "bidirectional",+ "description": "System reset (active low) and Serial Wire Debug I/O, also configurable as GPIO."+ },+ {+ "number": "24",+ "name": "SWDCLK",+ "type": "input",+ "description": "Serial Wire Debug clock input, must be kept low during device reset."+ },+ {+ "number": "25",+ "name": "P0.17",+ "type": "bidirectional",+ "description": "General purpose I/O pin P0.17 with configurable input/output direction."+ },+ {+ "number": "26",+ "name": "P0.18",+ "type": "bidirectional",+ "description": "General purpose I/O pin P0.18 with configurable input/output direction."+ },+ {+ "number": "27",+ "name": "P0.19",+ "type": "bidirectional",+ "description": "General purpose I/O pin P0.19 with configurable input/output direction."+ },+ {+ "number": "28",+ "name": "P0.20",+ "type": "bidirectional",+ "description": "General purpose I/O pin P0.20 with configurable input/output direction."+ },+ {+ "number": "29",+ "name": "DEC2",+ "type": "power_in",+ "description": "Power supply decoupling pin, connect 100 nF to 1 μF capacitor to ground."+ },+ {+ "number": "30",+ "name": "VDD_PA",+ "type": "power_out",+ "description": "RF power amplifier supply output (+1.6 V), requires external LC filtering."+ },+ {+ "number": "31",+ "name": "ANT1",+ "type": "passive",+ "description": "Differential RF antenna connection for 2.4 GHz transceiver transmit and receive."+ },+ {+ "number": "32",+ "name": "ANT2",+ "type": "passive",+ "description": "Differential RF antenna connection for 2.4 GHz transceiver transmit and receive."+ },+ {+ "number": "33",+ "name": "VSS",+ "type": "power_in",+ "description": "Ground (0 V), must be connected to PCB ground plane."+ },+ {+ "number": "34",+ "name": "VSS",+ "type": "power_in",+ "description": "Ground (0 V), must be connected to PCB ground plane."+ },+ {+ "number": "35",+ "name": "AVDD",+ "type": "power_in",+ "description": "Analog power supply input, 1.8 V to 3.6 V."+ },+ {+ "number": "36",+ "name": "AVDD",+ "type": "power_in",+ "description": "Analog power supply input, 1.8 V to 3.6 V."+ },+ {+ "number": "37",+ "name": "XC1",+ "type": "passive",+ "description": "16/32 MHz crystal oscillator connection for external crystal or clock reference."+ },+ {+ "number": "38",+ "name": "XC2",+ "type": "passive",+ "description": "16/32 MHz crystal oscillator connection for external crystal."+ },+ {+ "number": "39",+ "name": "DEC1",+ "type": "power_in",+ "description": "Power supply decoupling pin, connect 1 nF to 47 nF capacitor to ground."+ },+ {+ "number": "40",+ "name": "P0.21",+ "type": "bidirectional",+ "description": "General purpose I/O pin P0.21 with configurable input/output direction."+ },+ {+ "number": "41",+ "name": "P0.22",+ "type": "bidirectional",+ "description": "General purpose I/O pin P0.22 with configurable input/output direction."+ },+ {+ "number": "42",+ "name": "P0.23",+ "type": "bidirectional",+ "description": "General purpose I/O pin P0.23 with configurable input/output direction."+ },+ {+ "number": "43",+ "name": "P0.24",+ "type": "bidirectional",+ "description": "General purpose I/O pin P0.24 with configurable input/output direction."+ },+ {+ "number": "44",+ "name": "P0.25",+ "type": "bidirectional",+ "description": "General purpose I/O pin P0.25 with configurable input/output direction."+ },+ {+ "number": "45",+ "name": "P0.26",+ "type": "bidirectional",+ "description": "General purpose I/O pin P0.26, also serves as ADC input 0 and 32.768 kHz crystal output."+ },+ {+ "number": "46",+ "name": "P0.27",+ "type": "bidirectional",+ "description": "General purpose I/O pin P0.27, also serves as ADC input 1 and 32.768 kHz crystal input/reference."+ },+ {+ "number": "47",+ "name": "P0.28",+ "type": "bidirectional",+ "description": "General purpose I/O pin P0.28 with configurable input/output direction."+ },+ {+ "number": "48",+ "name": "P0.29",+ "type": "bidirectional",+ "description": "General purpose I/O pin P0.29 with configurable input/output direction."+ },+ {+ "number": "49",+ "name": "EP",+ "type": "passive",+ "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.2",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.2",+ "primary_model": "claude-haiku-4-5-20251001",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-4-6",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [],+ "pages_sent": 72,+ "cost_usd": 0.8375,+ "at": "2026-10-01T17:32:05"+ },+ "datasheet": {+ "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586175089775136768",+ "pages": 72,+ "sha256": "9132b1856f61beae",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 49,+ "described": 49,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ }+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}