DS1307 RTC


DS1307 RTC

IC DS1307 is a low power, fully Binary Coded Decimal (BCD) Real Time Clock (RTC) / Calendar with 56 Bytes of General Purpose SRAM. Address and data is transferred though I2C bus. It has built in circuit for detecting power failures and to switch backup battery supply. Current consumption is less than 500nA in battery backup mode. It can be easily interfaced with microcontrollers having I2C modules.

50.00 49.00

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  • Counts Seconds, Minutes, Date of Month, Day of Week, Month and Year
  • Leap Year Compensation valid up to year 2100
  • Low Power Consumption
  • I2C Interface
  • Automatically Detects Power Failure and Switches to Backup Battery Supply
  • Programmable Square Wave Output Signal
  • Consumes Less than 500nA in Battery Backup Mode
  • 56 Bytes of  General Purpose SRAM with Unlimited Writes


  • Crystal Frequency : 32.768KHz
  • Use 2.2KΩ or 1.8KΩ for I2C Pull Up Resistors
Recomended PCB Layout for DS1307 Crystal

Recomended PCB Layout for DS1307 Crystal


Additional information

Weight 0.5 g
Dimensions 9 x 8 mm