Serial real-time clock, 56 byte clock/calendar, 8-pin SOIC

DS1307, Serial, I2C Real-Time Clock

Description:
The DS1307 serial RTC is a low-power, full BCD clock/calendar plus 56 bytes of NV SRAM. Address and data are transferred serially through an I2C, 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. 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.

Features
- Completely Manages All Timekeeping Functions
o Real-Time Clock Counts Seconds, Minutes, Hours, Date of the Month, Month, Day of the Week, and Year with Leap-Year Compensation Valid Up to 2100
o 56-Byte, Battery-Backed, General-Purpose RAM with Unlimited Writes
o Programmable Square-Wave Output Signal
- Simple Serial Port Interfaces to Most Microcontrollers
o I2C Serial Interface
- Low Power Operation Extends Battery Backup Run Time
o Consumes Less than 500nA in Battery-Backup Mode with Oscillator Running
o Automatic Power-Fail Detect and Switch Circuitry
- 8-Pin DIP and 8-Pin SO Minimizes Required Space
- Underwriters Laboratories® (UL) Recognized