| Real-Time Clock Counts Seconds, Minutes, Hours, Day of Week, Date of Month, Month, Year, and Century Leap-Year Compensation Valid up to Year 2100 Wide +2V to +5.5V Operating Voltage Range 3-Wire Serial Interface, 2MHz at 5V, 500kHz at 2V 31 x 8-Bit SRAM for Scratchpad Data Storage Uses Standard 32.768kHz, 12.5pF Watch Crystal Low Timekeeping Current (400nA at 2V) Single-Byte or Multiple-Byte (Burst Mode)Data Transfer for Read or Write of Clock Registers or SRAM 8-Pin 3mm x 3mm x 0.8mm TDFN Surface-Mount Package Push-Pull 32.768kHz Clock Output Programmable Time/Date Polled ALARM Function No External Crystal Bias Resistors or Capacitors Required |