The DS1307 serial real-time clock (RTC) is a low-power, full binary-coded decimal (BCD) clock/calendar plus 56 bytes of NV SRAM. Address and data are transferred serially through an I2 C, bidirectional bus.

The clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The end of the month date is automatically. .adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in either the 24-hour or 12- hour format with AM/PM indicator. The DS1307 has a built-in power-sense circuit that detects power failures and automatically switches to the backup supply. Timekeeping operation continues while the part operates from the backup supply.

Note: Image may vary from actual product in terms of Brand according to availability. Please note that IC may have DS1307N  type.

Features: 

Completely Manages All Timekeeping Functions

1. Real-Time Clock Counts Seconds, Minutes, Hours, Date of the Month, Month, Day of the week, and Year with Leap-Year
2. Compensation Valid Up to 2100
3. 56-Byte, Battery-Backed, General-Purpose RAM with Unlimited Writes Programmable Square-Wave Output Signal

Simple Serial Port Interfaces to Most Microcontrollers

1. I2C Serial Interface

Low Power Operation Extends Battery Backup Run Time

1. Consumes Less than 500nA in BatteryBackup Mode with Oscillator Running
2. Automatic Power-Fail Detect and Switch Circuitry

8-Pin DIP and 8-Pin SO Minimizes Required Space

Optional Industrial Temperature Range: -40°C to +85°C Supports Operation in a Wide Range of Applications

Underwriters Laboratories® (UL) Recognized