Real Time Clock/Calendar with I2C Bus™ and EEPROM

The ISL12028 device is a low power real time clock with clock/calendar, power-fail indicator, clock output and crystal compensation, two periodic or polled alarms (CMOS output), intelligent battery backup switching, CPU Supervisor, integrated 512x8-bit EEPROM configured in 16 bytes per page.

Features
• Real Time Clock/Calendar
    - Tracks time in Hours, Minutes and Seconds
    - Day of the Week, Day, Month and Year
    - 3 Selectable Frequency Outputs
• Two Non-Volatile Alarms
    - Settable on the Second, Minute, Hour, Day of the Week, Day, or Month
    - Repeat Mode (Periodic Interrupts)
• Automatic Backup to Battery or SuperCap
    - Power Failure Detection
    - 800nA Battery Supply Current
• On-Chip Oscillator Compensation
    - Internal Feedback Resistor and Compensation Capacitors
    - 64 Position Digitally Controlled Trim Capacitor
    - 6 Digital Frequency Adjustment Settings to ±30ppm
• 512x8 Bits of EEPROM:
    - 16-Byte Page Write Mode (32 total pages)
    - 8 Modes of BlockLock™ Protection
    - Single Byte Write Capability
    - Data Retention: 50 years
    - Endurance: >2,000,000 Cycles Per Byte
• CPU Supervisor Functions:
    - Power On Reset, Low Voltage Sense
    - Watchdog Timer (0.25s, 0.75s and 1.75s)
• I2C Interface
    - 400kHz Data Transfer Rate
• 14 Ld SOIC and 14 Ld TSSOP Packages
• Pb-Free (RoHS Compliant)

Applications
• Utility Meters
• HVAC Equipment
• Audio/Video Components
• Modems
• Network Routers, Hubs, Switches, Bridges
• Cellular Infrastructure Equipment
• Fixed Broadband Wireless Equipment
• Pagers/PDA
• POS Equipment
• Test Meters/Fixtures
• Office Automation (Copiers, Fax)
• Home Appliances
• Computer Products
• Other Industrial/Medical/Automotive