DS1307 Real-Time Clock RTC Module

$7.00 USD $4.00 USD SAVE 43%
The price is for a single piece.
There are 5 pieces in the retail box.
The quantity has to be a multiple of 5.
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SKU: SS-DS1307

Frequently Bought Together

Total price:$17.00 $14.00

Welcome to the fascinating world of Lonely Binary's DS1307 Real-Time Clock (RTC) Module!

Get ready to embark on a time-traveling journey with the ingenious DS1307 RTC chip and its trusty companion, the AT24C32 EEPROM, brought together in perfect harmony by Lonely Binary's masterful engineering team!

We've combined the timeless elegance of the DS1307 RTC chip with the delightful quirkiness of our brand, Lonely Binary, to create a match made in clockwork heaven.

Tick-tock, tick-tock – hear the rhythmic beats of accurate timekeeping powered by the DS1307. Its precision will make even the most punctual of wizards jealous!

But wait, there's more! The AT24C32 EEPROM adds a touch of memory magic to this module, letting you store and retrieve data with ease. It's like having your own pocket-sized time-traveling journal!

With the DS1307 RTC chip at its core, this module communicates seamlessly with your microcontroller through the enchanting I2C interface. The connection is so smooth; it's like telepathy between your components!

So, whether you're building a time machine, brewing a potion, or simply counting the seconds until the next Lonely Binary product launch, our DS1307 Real-Time Clock Module will keep you in perfect sync with the universe.

Don't settle for ordinary when you can have extraordinary! Embrace the magic of time with Lonely Binary's DS1307 RTC Module, because when it comes to precision and charm, Lonely Binary is your ultimate timekeeping sorcerer!


Tech Specs

Operating Voltage 5V DC - Provides a reliable and stable power supply to ensure accurate timekeeping.
Operating Temperature -55°C to +125°C - Designed to withstand extreme temperature conditions, making it perfect for any environment.
Accuracy ±2ppm at 25°C - Offers precise timekeeping with an impressive accuracy of ±2ppm at the standard temperature.
Clock Operating Frequency 32.768KHz - A crystal-clear clock operating frequency for smooth and seamless timekeeping.
I2C Interface Standard I2C interface, with 7-bit addressing - Seamlessly communicate with your microcontroller using the popular I2C interface with 7-bit addressing.
SRAM Memory 56 bytes of battery-backed SRAM - Safely store your essential data with 56 bytes of battery-backed SRAM.
Battery Backup 3V Lithium Coin Cell or equivalent - Ensures uninterrupted timekeeping even during power outages with a 3V Lithium Coin Cell or equivalent battery.
Operating Current 55uA (at 3V battery) - Ultra-low operating current ensures energy efficiency and extended battery life.
RTC Operating Current Max. 200uA - The Real-Time Clock operates efficiently, consuming a maximum of 200uA.
I2C Communication Speed 100KHz and 400KHz - Enjoy the flexibility of communication speeds at 100KHz and 400KHz, tailored to your needs.
Real-Time Clock Counter Hours, Minutes, Seconds, Day, Date, Month, and Year - Keep track of time with precision, down to hours, minutes, seconds, day, date, month, and year.
Net Weight 3.5 g
Dimension (L) 27 mm x (W) 25 mm x (H) 5 mm


What’s in the Box

There are 5 pieces in the retail box.
The listing price is for

  • 1 x DS1307 RTC Module



  • 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 lonelybinary.com. 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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