ADA4481 · AdafruitActive
Adafruit product #4481 — built on NRF52840.
| Part number | ADA4481 |
|---|---|
| Manufacturer | Adafruit |
| Category | Development Boards › nRF52 / nRF54 Boards |
| Pins | 28 |
| Frequency | 2.4 GHz |
Adafruit ItsyBitsy nRF52840 Express - Bluetooth® LE pinout
| Pin | Name | Type | Description |
|---|---|---|---|
| 1 | VBAT | power | |
| 2 | GND | ground | |
| 3 | VBUS | power | |
| 4 | D13 | bidirectional | |
| 5 | D12 | bidirectional | |
| 6 | D11 | bidirectional | |
| 7 | D10 | bidirectional | |
| 8 | D9 | bidirectional | |
| 9 | D7 | bidirectional | |
| 10 | D5 | bidirectional | |
| 11 | SCL | bidirectional | |
| 12 | SDA | bidirectional | |
| 13 | TX | bidirectional | |
| 14 | RX | bidirectional | |
| 15 | !RESET | bidirectional | |
| 16 | 3.3V | power | |
| 17 | EN | bidirectional | |
| 18 | VHI | power | |
| 19 | A0 | bidirectional | |
| 20 | A1 | bidirectional | |
| 21 | A2 | bidirectional | |
| 22 | A3 | bidirectional | |
| 23 | A4 | bidirectional | |
| 24 | A5 | bidirectional | |
| 25 | SCK | bidirectional | |
| 26 | MOSI | bidirectional | |
| 27 | MISO | bidirectional | |
| 28 | D2 | bidirectional |
Schematic symbol and footprint
Footprint: Adafruit ItsyBitsy nRF52840 (header pads) — to scale, pad 1 in yellow (mm). Check against the datasheet before ordering PCBs.
Datasheet
Where to buy
Stock and prices from the suppliers, checked 2026-10-08; excluding tax and shipping.
