Real Time Clock/Calendar/CPU Supervisor with EEPROM 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 Compensation on Chip —Internal Feedback Resistor and Compensation 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