The RTC 2 Board is an add-on board featuring a low-power DS1307 serial real-time clock (RTC) that enables the microcontroller to keep the real-time and date including corrections for a leap year and months with less than 31 days. The DS1307 aboard the RTC2 board is full binary-coded decimal (BCD) clock/calendar with 56 bytes of NV SRAM. The board has an integrated power-sense circuit that detects power failures and automatically switches to the backup supply. The board has a female IDC10 connector to plug it into a development system. The RTC2 Board uses the serial I2C interface for communication to the microcontroller. There are two options for the location of the SCL and SDA pins; their position can be changed by soldering an SMD jumper. It works as an extension of existing development boards in applications where real-time data is required. It is designed to operate using a 5V power supply only.
The RTC2 Board is an ideal choice for applications that involve the use of real-time clocks, calendars, and programmed alarms.