Grove - DS1307 RTC For Arduino - Seeed Studio

The Grove – DS1307 RTC module is a highly reliable real-time clock solution designed to keep precise time for your Arduino, Raspberry Pi and other embedded projects. Based on the DS1307 clock chip, it communicates via the I2C protocol and maintains accurate timekeeping even during power loss, thanks to its onboard CR1225 lithium battery support. The module tracks seconds, minutes, hours, day, date, month and year, with automatic adjustment for months shorter than 31 days and built-in leap year correction. It supports both 12-hour (with AM/PM indicator) and 24-hour formats, ensuring flexibility for different applications. The DS1307’s integrated power-sense circuit automatically switches to the backup battery during power interruptions, guaranteeing continuous and stable clock operation. For optimal performance, a CR1225 battery must be inserted to ensure the crystal oscillator operates correctly. Ideal for data logging, scheduling, alarms, timing applications and long-running projects, this Grove module offers plug-and-play integration and dependable time accuracy up to the year 2100.

• Accurate Real-Time Clock: Tracks full calendar information including seconds, minutes, hours, day, month and year.
• Automatic Date Adjustment: Corrects month lengths and accounts for leap years to ensure long-term precision.
• Backup Battery Support: Uses a CR1225 lithium cell for continuous timekeeping during power loss.
• Built-in Power Sense Circuit: Automatically switches to battery mode when primary power fails.
• 12/24-Hour Format: Supports both time formats with an AM/PM indicator.
• I2C Communication: Seamless integration with Arduino, Raspberry Pi and other microcontrollers.
• Grove Plug-and-Play Interface: Enables fast, solder-free connection for rapid development.

Package Content:

• Grove - RTCx1
• Grove Cablex1