资 源 简 介
2-Wire™ RTC Real TIme Clock/Calendar/CPU Supervisor withEEPROMFEATURES• Real TIme Clock/Calendar—Tracks TIme in Hours, Minutes, Seconds andHundredths of a Second—Day of the Week, Day, Month, and Year• 2 Polled Alarms (Non-volaTIle)—Settable on the Second, Minute, Hour, Day of theWeek, Day, or Month—Repeat Mode (periodic interrupts)• Oscillator Compensation on Chip—Internal feedback resistor and compensationcapacitors—64 position Digitally Controlled Trim Capacitor—6 digital-frequency adjustment setting 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• 32K x 8 Bits of EEPROM—128-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
