SparkFun Real Time Clock Module

SparkfunSKU: BOB-12708
Price:
Sale price £18.70
incl. VAT
excl. VAT
Stock:
Only 5 units left
Quantity:

Awesome Extras

(6 Reviews)
The Pi HutBreak-away 0.1" 36-pin strip male header - Black - 10 pack
Sale price £4.30 incl. VAT excl. VAT
(38 Reviews)
The Pi HutPrototyping Wire Spool Set - 6 Spool
Sale price £12 incl. VAT excl. VAT
(2379 Reviews)
The Pi HutRaspberry Pi 4 Model B Starter Kit
Sale priceFrom £69 incl. VAT excl. VAT

This is the SparkFun Real Time Clock (RTC) Module, this little breakout that uses the DS1307 to keep track of the current year, month, day as well as the current time. The module comes fully assembled and includes a small CR1225 Lithium coin cell battery that will run the RTC for a minimum of 9 years (17 years typical) without an external 5V power supply.

The DS1307 RTC is accessed via the I2C protocol. We've written a test-bed to program the modules, this code should give you some insight on how to interface the module to any microcontroller using our example software I2C and BCD routines.

This rev of the Real-Time Clock module finally adds I2C resistors and a larger battery pad to fix the problems with the battery shorting to the board.

Features

  • Two-wire I2C interface
  • Hour : Minutes : Seconds AM/PM
  • Day Month, Date - Year
  • Leap year compensation
  • Accurate calendar up to year 2100
  • Battery backup included
  • 1Hz output pin
  • 56 Bytes of Non-volatile memory available to user
  • 0x68 I2C Address
  • 0.75x0.75" (20x20mm)

Documents

Payment & Accreditations

Payment methods
Amazon American Express Maestro Mastercard PayPal Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Accreditations