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NRF51802-QFAA-R
Public Made by Adomby adom
Nordic Semicon RF Transceiver ICs, UQFN-48-EP(6x6). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownNRF51802-QFAA-R
Nordic Semicon · RF Transceiver ICs · UQFN-48-EP(6x6)
NRF51802-QFAA-R from Nordic Semicon, in a UQFN-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 for the device |
| 2 | DCC | power_out | DC/DC converter output voltage to external LC filter |
| 3 | P0.30 | bidirectional | General purpose I/O pin |
| 4 | P0.00 | bidirectional | General purpose I/O pin; AREF0 - ADC/LPCOMP reference input 0 |
| 5 | P0.01 | bidirectional | General purpose I/O pin; AIN2 - ADC/LPCOMP input 2 |
| 6 | P0.02 | bidirectional | General purpose I/O pin; AIN3 - ADC/LPCOMP input 3 |
| 7 | P0.03 | bidirectional | General purpose I/O pin; AIN4 - ADC/LPCOMP input 4 |
| 8 | P0.04 | bidirectional | General purpose I/O pin; AIN5 - ADC/LPCOMP input 5 |
| 9 | P0.05 | bidirectional | General purpose I/O pin; AIN6 - ADC/LPCOMP input 6 |
| 10 | P0.06 | bidirectional | General purpose I/O pin; AIN7 - ADC/LPCOMP input 7; AREF1 - ADC/LPCOMP reference input 1 |
| 11 | P0.07 | bidirectional | General purpose I/O pin |
| 12 | VDD | power_in | Power supply for the device |
| 13 | VSS | power_in | Ground (0 V) |
| 14 | P0.08 | bidirectional | General purpose I/O pin |
| 15 | P0.09 | bidirectional | General purpose I/O pin |
| 16 | P0.10 | bidirectional | General purpose I/O pin |
| 17 | P0.11 | bidirectional | General purpose I/O pin |
| 18 | P0.12 | bidirectional | General purpose I/O pin |
| 19 | P0.13 | bidirectional | General purpose I/O pin |
| 20 | P0.14 | bidirectional | General purpose I/O pin |
| 21 | P0.15 | bidirectional | General purpose I/O pin |
| 22 | P0.16 | bidirectional | General purpose I/O pin |
| 23 | SWDIO/nRESET | bidirectional | System reset (active low); also hardware debug and flash programming I/O |
| 24 | SWDCLK | input | Hardware debug and flash programming clock input |
| 25 | P0.17 | bidirectional | General purpose I/O pin |
| 26 | P0.18 | bidirectional | General purpose I/O pin |
| 27 | P0.19 | bidirectional | General purpose I/O pin |
| 28 | P0.20 | bidirectional | General purpose I/O pin |
| 29 | DEC2 | passive | Power supply decoupling capacitor connection |
| 30 | VDD_PA | power_out | Power supply output (+1.6 V) for on-chip RF power amplifier |
| 31 | ANT1 | bidirectional | Differential antenna connection for TX and RX |
| 32 | ANT2 | bidirectional | Differential antenna connection for TX and RX |
| 33 | VSS | power_in | Ground (0 V) |
| 34 | VSS | power_in | Ground (0 V) |
| 35 | AVDD | power_in | Analog power supply for radio |
| 36 | AVDD | power_in | Analog power supply for radio |
| 37 | XC1 | input | Connection for 16/32 MHz crystal or external 16 MHz clock reference |
| 38 | XC2 | output | Connection for 16/32 MHz crystal |
| 39 | DEC1 | passive | Power supply decoupling capacitor connection |
| 40 | P0.21 | bidirectional | General purpose I/O pin |
| 41 | P0.22 | bidirectional | General purpose I/O pin |
| 42 | P0.23 | bidirectional | General purpose I/O pin |
| 43 | P0.24 | bidirectional | General purpose I/O pin |
| 44 | P0.25 | bidirectional | General purpose I/O pin |
| 45 | P0.26 | bidirectional | General purpose I/O pin; AIN0 - ADC/LPCOMP input 0; XL2 - connection for 32.768 kHz crystal |
| 46 | P0.27 | bidirectional | General purpose I/O pin; AIN1 - ADC/LPCOMP input 1; XL1 - connection for 32.768 kHz crystal or external clock reference |
| 47 | P0.28 | bidirectional | General purpose I/O pin |
| 48 | P0.29 | bidirectional | General purpose I/O pin |
| 49 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nordic Semicon |
| Package | UQFN-48-EP(6x6) |
| Category | RF And Wireless |
| Pins | 49 |
CAD (KiCad official)
- Symbol:
NRF51802-QFAA-R - Footprint:
Package_DFN_QFN:QFN-48-1EP_6x6mm_P0.4mm_EP4.4x4.4mm - 3D model: UQFN-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:
nrf51802-qfaa-r-etched.step/nrf51802-qfaa-r-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);nrf51802-qfaa-r.step/nrf51802-qfaa-r.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nordic Semicon datasheet (85 pp, sha256
d469441480edb974, retrieved 2026-10-01, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-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).