20Mhz 32KB Flash 2KB RAM 23 I/O
$7.00 USD
The price is for a single piece.
There are 3 pieces in the retail box.
The quantity has to be a multiple of 3.
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Introducing the Lonely Binary ATMEGA328P-PU with Arduino Uno Bootloader:

Get ready to dive into a world of technological wonder with the Lonely Binary ATMEGA328P-PU. This microcontroller is the same powerhouse that drives the official Arduino Uno, bringing its magic straight to your fingertips.

Designed for those who dare to dream beyond boundaries, the ATMEGA328P-PU is perfect for constructing your very own Arduino-compatible projects. Whether you're working on a breadboard masterpiece or a custom PCB creation, this microcontroller has your back.

Picture this: the ATmega328P, the heart of the official Arduino Uno, but with a touch of Lonely Binary brilliance. With 32K of program space and 23 versatile I/O lines, this microcontroller offers you a canvas of creativity to paint your visions upon.

But that's not all - it's equipped with 6 channels for the 10-bit ADC, allowing you to capture the nuances of your environment with precision. And when it comes to performance, this microcontroller doesn't hold back. With the capability to run up to an astonishing 20MHz using an external crystal, it keeps pace with your imagination.

And now, for the pièce de résistance - the Lonely Binary ATMEGA328P-PU arrives preloaded with the revered Arduino Uno bootloader. It's like having a key to the universe of Arduino possibilities, effortlessly unlocking your ideas and turning them into tangible realities.

Whether you're looking to innovate on a grand scale or enhance an existing project, the Lonely Binary ATMEGA328P-PU with Arduino Uno Bootloader is your companion on this journey of creation. With every mention of Lonely Binary, you invite a wave of cutting-edge technology into your projects, making them shine brighter than ever before.


Tech Specs

Advanced RISC Architecture Discover exceptional performance with 131 powerful instructions, most executed in a single clock cycle. With 32 x 8 General Purpose Working Registers, this microcontroller is a powerhouse of efficiency.
High Throughput Brilliance Unleash up to 20 MIPS throughput at 20 MHz, allowing your projects to soar with unprecedented speed and efficiency. On-chip 2-cycle Multiplier further enhances computational capabilities.
Endurance Unleashed Witness the strength of High Endurance Non-volatile Memory Segments. With 4/8/16/32K Bytes of In-System Self-Programmable Flash program memory, 256/512/512/1K Bytes EEPROM, and 512/1K/1K/2K Bytes Internal SRAM, your data and programs are secured. An impressive 10,000 Flash/100,000 EEPROM Write/Erase Cycles ensure reliability.
Security at its Core Enhance security with an Optional Boot Code Section and Independent Lock Bits. True Read-While-Write Operation and Programming Lock fortify your software security.
Peripheral Powerhouse Dive into a world of Peripheral Features, including Two 8-bit Timer/Counters with Separate Prescaler and Compare Mode, One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture Mode, a Real Time Counter with Separate Oscillator, and Six PWM Channels.
Precision Crafting Elevate your projects with an 8-channel 10-bit ADC in TQFP and QFN/MLF package for temperature measurement, and a 6-channel 10-bit ADC in PDIP Package for precise temperature readings.
Seamless Connectivity Unlock a range of communication options with the Programmable Serial USART, Master/Slave SPI Serial Interface, and Byte-oriented 2-wire Serial Interface (Philips I2C compatible).
Intelligent Control Take charge with a Programmable Watchdog Timer with Separate On-chip Oscillator, an On-chip Analog Comparator, and the ability to Interrupt and Wake-up on Pin Change.
Net Weight 2 g
Dimension (L) 35 mm x (W) 8 mm x (H) 7 mm


What’s in the Box

There are 3 pieces in the retail box.
The listing price is for

  • 1 x ATMEGA328P



  • Australia Orders over $55 - Your order will enjoy free shipping via Australia Post Standard Shipping Services. 
  • International Orders over $99 - Your order will be posted via Australia Post Air Mail Services. 

Raspberry Pi board / Micro:bit board / NVIDIA board will be excluded; All PCB orders will not enjoy free shipping. Distributors and wholesale orders are not eligible for free shipping.


At this time, LONELY BINARY is an online-only business, with our products available through This allows us to keep the cost down for the customer. Orders cannot be picked up. 


We ship Australia wide to all addresses, including PO Box, Parcel Locker, etc.All Australian orders will be shipped via Australia Post, Courier Please or Fastway Couriers (Aramex). International Orders will be shipped via Australia Post or DHL. Your order will be shipped within one business day after we receive payment, providing the items are in stock.

  • Standard Shipping
    Sent via standard Australia Post stamped letter mail, typically 5-9 business days. No tracking/support available other than confirmation of dispatch.
  • Express Post
    Sent via Australia Post Express Service, Fastway Courier or Courier Please, 1 – 2 business days for metro orders, potentially longer for orders outside of metro zones, with full tracking.

Non-metro addresses in WA, NT, SA & TAS can take 2+ days in addition to the above information.

Shipping costs for international orders vary depending on location and package size, where possible we have kept this to flat rate charges to reduce confusion. International orders are shipped through Australia Post and DHL courier service depending on the most economical at the time. 


Shipping Method via Delivery Area Delivery Time(business day) Tracking No. Weight Limit
DHL Asia 1-2 YES No Limit
western EU 2-3 YES No Limit
eastern EU 3-5 YES No Limit
North America 2-3 YES No Limit
Australia 2-3 YES No Limit
South America 3-5 YES No Limit
South Africa 3-5 YES No Limit


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