> **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

# Sony Spresense Extension Board

**Type:** Product page · **SKU:** ADA4418 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia)
**Page:** https://core-electronics.com.au/sony-spresense-extension-board.html ([markdown](https://core-electronics.com.au/sony-spresense-extension-board.html.md))

## Retired product

This product is retired and no longer available for purchase. Search the catalogue for an alternative.

## How to buy

- **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

Spresense is a compact development board based on Sony’s power-efficient multicore microcontroller CXD5602. It allows developers to create IoT applications in a very short time and is supported by the Arduino IDE as well as the more advanced NuttX based SDK. The **Spresense Extension Board** has the following connectors in addition to Arduino Uno compatible pin sockets:

- 3.5 mm headphone jack
- MicroSD card (**not included**, but Adafruit[ carry 'em in the store](https://core-electronics.com.au/search/?q=mega-storage))
- Extra USB port
- Multiple microphone pins
 
The Spresense main board and extension board are connected by a Board-to-Board (B-2-B) connector.

**Note:** This is **just** the extension board. You'll need the [main board as well](https://core-electronics.com.au/sony-spresense-main-board-cxd5602.html).

![](https://core-electronics.com.au/js/tiny_mce/themes/advanced/img/trans.gif)

## Technical Details

**Specifications:**

- [Follow this link for more information on Sony's CXD5602 microcontroller](https://www.sony-semicon.co.jp/e/products/smart-sensing/spresense/)
- [GitHub Repository](https://developer.sony.com/develop/spresense/docs/introduction_en.html#_repository_overview)
- [Spresense hardware and software guides and documentation](https://developer.sony.com/develop/spresense/docs/introduction_en.html#_spresense_software)
- [FAQ](https://developer.sony.com/develop/spresense/docs/faq_en.html)
- Model name: CXD5602PWBEXT1
- Size: 68.6mm x 53.3mm
- Audio input / output: 4 ch analog microphone input or 8 ch digital microphone input, headphone output
- Digital input / output: 3.3 V or 5 V digital I/O
- Analog input: 6 ch (5.0 V range)
- External memory interface: microSD slot
- Operating conditions: Temperature: 10 - 40 ℃, Humidity: 30% - 80% (no condensation)
- Storage conditions: Temperature: -20 - 60 ℃, Humidity: 10% - 80%
 
- [Pinout Diagram](https://cdn-shop.adafruit.com/product-files/4418/4418_pinout.jpg)
- [Schematic](https://cdn-shop.adafruit.com/product-files/4418/4418_schematic.pdf)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/a/d/ada4418-1.jpg)