| Real-Time Clock Counts Seconds, Minutes, Hours, Date, Month, Day, and Year Leap Year Compensation Valid up to Year 2100 Fast (400kHz) I2C-Bus-Compatible Interface from 2.0V to 5.5V 31 x 8 SRAM for Scratchpad Data Storage Uses Standard 32.768kHz, 12.5pF Load, Watch Crystal Ultra-Low 225nA (typ) Timekeeping Current Single-Byte or Multiple-Byte (Burst Mode) Data Transfer for Read or Write of Clock Registers or SRAM 6-Pin 3mm x 3mm x 0.8mm TDFN Surface-Mount Package No External Crystal Bias Resistors or Capacitors Required |