DS1305E+T&R Functions, Maxim Integrated DS1305E+T&R, Real Time Clock, 96B RAM Serial-SPI, 20-Pin TSSOP

Completely Manages All Timekeeping FunctionsReal-Time Clock (RTC) Counts Seconds, Minutes, Hours, Date of the Month, Month, Day of the Week, and Year with Leap-Year Compensation Valid Up to 210096-Byte, Battery-Backed NV RAM for Data StorageTwo Time-Of-Day Alarms, Programmable on Combination of Seconds, Minutes, Hours, and Day of the WeekStandard Serial Port Interfaces with Most MicrocontrollersSupports SPI (Serial Peripheral Interface) Modes 1 and 3 or Standard 3-Wire InterfaceBurst Mode for Reading/Writing Successive Addresses in Clock/RAMMultiple Power Supply Pins Ease Adding Battery For BackupDual-Power Supply Pins for Primary and Backup Power SuppliesOptional Trickle Charge Output to Backup Supply2.0V to 5.5V Operation20-Pin TSSOP Minimizes Required SpaceOptional Industrial Temperature Range: -40°C to +85°C Supports Operation in a Wide Range of Applications