> **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

# ATmega328 with Arduino Optiboot (Uno)

**Type:** Product page · **SKU:** DEV-10524 · **Brand:** [Sparkfun](https://core-electronics.com.au/brands/sparkfun-australia)
**Page:** https://core-electronics.com.au/atmega328-with-arduino-optiboot-uno.html ([markdown](https://core-electronics.com.au/atmega328-with-arduino-optiboot-uno.html.md))

The name says it all on this one. An ATmega328 in DIP package, pre-loaded with the Arduino Optiboot (Uno 16MHz) Bootloader. This will allow you to use Arduino code in your custom embedded project without having to use an actual Arduino board.

## Pricing

- **Price:** $10.85 (inc GST) — $9.86 AUD, exc GST
- **Quantity discounts:** 5+ $9.56 (exc GST) · 25+ $9.37 (exc GST) · 100+ $8.97 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 24 and Aug 31.

## How to buy

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- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/DEV-10524:1.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

The name says it all on this one. An ATmega328 in DIP package, pre-loaded with the Arduino Optiboot (Uno 16MHz) Bootloader. This will allow you to use Arduino code in your custom embedded project without having to use an actual Arduino board.

 To get this chip working with Arduino IDE, you will need an external 16MHz crystal or resonator, a 5V supply, and a serial connection. If you are not comfortable doing this, Sparkfun recommend purchasing the [Arduino Uno](https://core-electronics.com.au/search/?q=11021) board that has all of these built into the board.

 Atmel's ATMega328 8-Bit Processor in 28 pin DIP package. It's like the ATmega168, with double the flash space. 32K of program space. 23 I/O lines, 6 of which are channels for the 10-bit ADC. Runs up to 20MHz with external crystal. Package can be programmed in circuit. 1.8V to 5V operating voltage!

**Note:** This contains the bootloader used on the Arduino Uno, with small modifications to work more reliably with different serial connection options (mainly the FTDI). Check the link below for more information.

**Documents:**

- [Datasheet](https://core-electronics.com.au/attachments/localcontent/ATMega328_851926f3678.pdf)
- Arduino Home Page
- Programming Reference
- Optiboot Change Info
- Low Power Mode Tutorial
 
**Replaces:**[DEV-009217](https://core-electronics.com.au/search/?q=09217)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/a/t/atmega328_with_arduino_optiboot__uno___dev-10524__01.jpg)