> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# Seeed Studio XIAO nRF52840 Plus

**Type:** Product page · **SKU:** SS102010672 · **Brand:** [Seeed Studio](https://core-electronics.com.au/brands/seeed-studio-australia)
**Page:** https://core-electronics.com.au/seeed-studio-xiao-nrf52840-plus.html ([markdown](https://core-electronics.com.au/seeed-studio-xiao-nrf52840-plus.html.md))

The Seeed Studio XIAO nRF52840 Plus brings nine extra SMD castellated pins to the popular Bluetooth-enabled XIAO nRF52840, keeping Bluetooth Low Energy 5.4, NFC and low power consumption in the same thumb-sized form factor.

## Pricing

- **Price:** $18.25 (inc GST) — $16.59 AUD, exc GST

## Availability & dispatch

- Available with a lead time — expect dispatch between Sep 04 and Sep 07.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=SS102010672:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/SS102010672:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

### Features

- **Versatile Microcontroller:** Incorporates the Nordic nRF52840 chip with FPU, operating up to 64 MHz, supported by Arduino / CircuitPython / MicroPython
- **Nine Extra GPIOs:** Redesigned 1.27mm-pitch castellations and pad layout on the back bring the total to 20 GPIO, for expanded I/O via board-to-board SMD soldering
- **Wireless Capabilities:** Implement Bluetooth Low Energy 5.4 and Bluetooth Mesh with onboard antenna, also provide NFC connectivity
- **Elaborate Power Design:** Provide ultra-low power consumption as 5 µA in deep sleep mode, with the onboard BQ25101 supporting lithium battery charge management
- **Thumb-sized Design:** 21 x 17.8mm, Seeed Studio XIAO series classic form-factor with 2.54mm headers, suitable for wearable devices and space-constrained projects
- **Drop-in Compatible:** Same backside pad layout as the original XIAO nRF52840, so existing XIAO expansion boards and add-ons work as-is
 
### Specifications

- **Processor:** Nordic nRF52840, 32-bit ARM Cortex-M4 with FPU, 64 MHz
- **Wireless:** Bluetooth Low Energy 5.4 / Bluetooth Mesh / NFC
- **Memory:** 256 KB RAM, 1 MB on-chip flash, plus 2 MB onboard flash
- **Interfaces:** 1x I2C, 2x UART, 2x SPI, 1x I2S
- **GPIO:** 20 pins (9 extra SMD castellations), 20 PWM-capable, 6 analog inputs
- **Battery Charge Chip:** BQ25101
- **Onboard:** 1x reset button, 3-in-one LED (user and charge indicator)
- **Dimensions:** 21 x 17.8mm
- **Programming Languages:** Arduino, MicroPython, CircuitPython
 
Pin headers are supplied unsoldered. Need onboard sensors instead of extra I/O? The Seeed Studio XIAO nRF52840 Sense carries an extra 6-axis IMU and a PDM microphone.

### Resources

- [Wiki](https://wiki.seeedstudio.com/XIAO_BLE/)
- [XIAO Series SoM Datasheet](https://files.seeedstudio.com/wiki/XIAO/Seeed-Studio-XIAO-Series-SOM-Datasheet.pdf)
- [Nordic nRF52840 Datasheet](https://core-electronics.com.au/attachments/localcontent/Nano_BLE_MCU-nRF52840_PS_v1_18277b5ca8d.pdf)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/S/S/SS102010672_ecommerce_1785300779035.jpg)