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Details about  New I2C RTC DS1307 AT24C32 Real Time Clock Module For Arduino AVR ARM PIC SMD

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New I2C RTC DS1307 AT24C32 Real Time Clock Module For Arduino AVR ARM PIC SMD
Item Ended
Item condition:
04 Mar, 2015 02:47:01 GMT
US $2.80
Approximately £1.85(including postage)
US $0.65 (approx. £0.43) ePacket delivery from China | See details
See details about international postage here.  help icon for delivery - opens a layer
Item location:
shenzhen, China


eBay item number:
Seller assumes all responsibility for this listing.
Last updated on  23 Mar, 2014 09:23:15 GMT  View all revisions

Item specifics

New: A brand-new, unused, unopened and undamaged item in original retail packaging (where packaging is ... Read moreabout the condition

New Board Tiny I2C RTC DS1307 AT24C32 Real Time Clock Module For AVR ARM PIC

Item Description
  • DS1307 I2C real-time clock chip (RTC)
  • 24C32 32K I2C EEPROM memory
  • Two wire I2C interface.
  • Hour : Minutes : Seconds AM/PM.
  • Day Month, Date - Year.
  • Built-in IR2032 rechargeable lithium battery
  • Solve up the problem of the backup battery(DS1307) which can not read and write.
  • Support timming 1 year of the DS1307 after fully charged
  • Compact design: 27mm*28mm*8.4mm
  • Leads pins to the a DS1307 clock ,provide the clock signal for the microcontroller.
  • Can be cascaded to other I2C devices.

DS1307 is a low power, with 56 bytes of non-volatile RAM BCD code clock calendar real-time clock chip, the address and data transmission through the two-wire bidirectional serial bus, the chip can be seconds, minutes, hours and other information , the number of days in each month can be adjusted automatically. And there is a leap year compensation function. AM / PM flag determines clock work 24-hour or 12-hour mode, the chip has a built-in power-sense circuit, brownout detection and battery switching function.

DS1307 features:

  • Of seconds, hours, minutes, monthly number of days, months, days of the week count with leap year compensation function. Record the year on line 2100.
  • 56 bytes of non-volatile RAM
  • Two-wire serial interface
  • Programmable square-wave output

This is the DS1307 Real Time Clock developed by one of our designer waiman. The module comes fully assembled and pre-programmed with the current time (ok, so it's our current time - MST). The included Lithium coin cell battery (CR1225 41mAh) will run the module for a minimum of 9 years (17 years typical) without external 5V power. The DS1307 is accessed via the I2C protocol.

Package Content:

1x DS1307 Module. (Because of shipping restrictions, some times we won't ship Battery.)

Payment Description

1.We accept payment via paypal only.

2.If you are paying through PayPal using an eCheck, please be aware that we will only ship your order after the payment has been cleared.

3.For security reasons, we generally only ship items to you ebay address. If you would like to modify the shipping address, please add a note during the payment process.

Shipping Description

1.International Orders: The buyer is responsible for any applicable import duties and local taxes. Please verify with your customs before making your purchase.
2.We will ship out the package within 1 business day after payment received.Packet to the USA can be tracked on
3.The package will comes with a tracking number when you order more than $30 ,it will be fater and more safe.
4.Usually the delivery time will be 7-24 business days.sometimes it is normally to be delayed by custome house.
5.we will provide DHL ,Fedex ,UPS,EMS or other Express when you order more than $200 .so do make sure leave your phone numbe .

Return Description

1.If the item is defected by the processing of postage , we are pleasure to replace a same item for you within 60 days atfer payment.

2.Shipping and Handlingfee is non-refundable.
3.Buyer MUST pay return postage for any return reason.In return, we will pay the postage for shipping back the item to you.

About Us

Office Hours: Monday through Friday 9:00AM - 6:30PM

Saturday 9:00AM - 6:00PM
We do not work on sunday and public holidays (China Mainland)

We apologize for the late reply during the holidays.

Questions and answers about this item

No questions or answers have been posted about this item.


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