> **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

# Arduino Uno SMD Rev3

**Type:** Product page · **SKU:** A000073 · **Brand:** [Arduino](https://core-electronics.com.au/brands/arduino-australia) · **GTIN:** 7630049200074
**Page:** https://core-electronics.com.au/arduino-uno-smd-rev3.html ([markdown](https://core-electronics.com.au/arduino-uno-smd-rev3.html.md))

The Arduino Uno SMD R3 is a microcontroller board based on the ATmega328 (datasheet).

## Pricing

- **Price:** $52.60 (inc GST) — $47.82 AUD, exc GST
- **Quantity discounts:** 25+ $45.43 (exc GST) · 100+ $43.04 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 1 today, and up to 500 more in 10–14 days.

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## Description

The Arduino Uno SMD R3 is a microcontroller board based on the ATmega328 ([datasheet](https://core-electronics.com.au/attachments/localcontent/doc8161_856003f636d.pdf)). It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.

The Uno differs from all preceding boards in that it does not use the FTDI USB-to-serial driver chip.

Additional features coming with the R3 version are:

- ATmega16U2 instead 8U2 as USB-to-Serial converter.
- 1.0 pinout: added SDA and SCL pins for TWI communication placed near to the AREF pin and two other new pins placed near to the RESET pin, the IOREF that allow the shields to adapt to the voltage provided from the board and the second one is a not connected pin, that is reserved for future purposes.
- stronger RESET circuit.

"Uno" means "One" in Italian and is named to mark the upcoming release of Arduino 1.0. The Uno and version 1.0 will be the reference versions of Arduino, moving forward. The Uno is the latest in a series of USB Arduino boards, and the reference model for the Arduino platform; for a comparison with previous versions, see the index of Arduino boards.

Technical Specifications

| Microcontroller | ATmega328 |
|---|---|
| Operating Voltage | 5V |
| Supply Voltage (recommended) | 7-12V |
| Maximum supply voltage (not recommended) | 20V |
| Digital I/O Pins | 14 (of which 6 provide PWM output) |
| Analog Input Pins | 6 |
| DC Current per I/O Pin | 40 mA |
| DC Current for 3.3V Pin | 50 mA |
| Flash Memory | 32 KB (ATmega328) of which 0.5 KB used by bootloader |
| SRAM | 2 KB (ATmega328) |
| EEPROM | 1 KB (ATmega328) |
| Clock Speed | 16 MHz |

If you want to give a closer look to this board we advice you to visit the official Arduino UNO page in the Hardware Section.

## Guides for this product

- [Arduino Boards, Compared](https://core-electronics.com.au/guides/arduino/compare-arduino-boards/)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/a/0/a000073_featured_1.jpg)