This is a breakout board for the DS1307+ Real Time Clock. The module comes fully assembled and pre-programmed with the current time (for the Mountain Time Zone in North America). 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. Access to the DS1307+ is via the I2C protocol. Download the example test-bed code below for some insight on how to communicate with the module from a microcontroller using software I2C and BCD routines. DS1307 RTC 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
- Dimensions: 0.75 × 0.75" (20 × 20 mm)
DS1307 RTC Board Resources
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