+ Completely Manages All Timekeeping Functions - 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 - 31 x 8 Battery-Backed General-Purpose RAM + Simple Serial Port Interfaces to Most Microcontrollers - Simple 3-Wire Interface - TTL-Compatible (VCC = 5V) - Single-Byte or Multiple-Byte (Burst Mode) Data Transfer for Read or Write of Clock or RAM Data + Low Power Operation Extends Battery Backup Run Time - 2.0V to 5.5V Full Operation - Uses Less Than 300nA at 2.0V + 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

+ Interface +VSUPPLY(V) +Time Keeping Current(nA) +CL(pF) +Memory Type +Memory Size(Bytes) +Time of Day Alarms +Functions +Package/Pins +BudgetaryPrice