DS1307 Real-time watch

Integrated Circuit DS1307. Exact real time clock 64x8 serial, which automatically keeps the current time and date, including compensation for months with less than 31 days and year breaks. The address and the data are transferred serially by 2-wire, on bi-directional bus. The clock also operates in 24-hour format or in 12-hour AM/PM format.

Main features:

• Real Time Clock (RTC) will count the seconds, minutes, hours, date of the month, month, day of the week and year with leap year. Compensation valid up to 2100
• Manages all timing functions, 56 byte, battery backed up, general-purpose RAM with unlimited writes
  
• Programmable square wave output signal
  
• Simple serial port interfaces for most microcontrollers, I2C serial interface
  
• Low power operation prolongs battery backup runtime
  
• Consumes less than 500NA in battery backup mode with oscillator running
  
• Automatic detection of power failures and switching circuits
  
• The maximum standby current is 200μA
  
• UL recognized
• Applications: Clock and timing
• • Data format: day; date; month, year
  • Interface Type: I2C Serial
  • Clock format: HH;MM;SS
    
  • Clock type: RTC
  • Minimum Power Voltage: 4.5V
  • Maximum Power Voltage: 5.5V
  • Minimum operating temperature: 0 °C
  • Maximum operating temperature: 70 °C