X1228 Datasheet | Intersil

FEATURES - Real Time Clock/Calendar - Tracks Time in Hours, Minutes, and Seconds - Day of the Week, Day, Month, and Year - 2 Polled Alarms (Non-volatile) - Settable on the Second, Minute, Hour, Day of the Week, Day, or Month - Repeat Mode (periodic interrupts) - Oscillator pensation on Chip - Internal Feedback Resistor and pensation Capacitors - 64 Position Digitally Controlled Trim Capacitor - 6 Digital Frequency Adjustment Settings to ±30ppm - CPU Supervisor Functions - Power-On Reset, Low Voltage Sense - Watchdog Timer (SW Selectable: 0.25s, 0.75s, 1.75s, off) - Battery Switch or Super Cap Input - 512 x 8 Bits of EEPROM - 64-Byte Page Write Mode .. - 8 Modes of Block Lock™ Protection - Single Byte Write Capability - High Reliability - Data Retention: 100 Years - Endurance: 100,000 Cycles Per Byte - 2-Wire™ Interface Interoperable with I2C- - 400k Hz Data Transfer Rate - Frequency Output (SW Selectable: Off, 1Hz, 4096Hz, or 32.768k Hz) - Low Power CMOS - 1.25µA Operating Current (Typical) - Small Package Options - 14 Ld SOIC and 14 Ld TSSOP - Repetitive Alarms - Temperature pensation - Pb-Free Plus Anneal Available (Ro HS pliant) APPLICATIONS - - - - - - - - - - - - - -...