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The ISL1209 device is a low power real time clock with Event Detect function, timing and crystal compensation, clock/calendar, power fail indicator, periodic or polled alarm, intelligent battery backup switching and battery-backed user SRAM.

Key Features

• Real Time Clock/Calendar
  • Tracks Time in Hours, Minutes, and Seconds
  • Day of the Week, Day, Month, and Year
• Security and Event Functions
  • Tamper detection with Time Stamp
  • Event Detection During Battery Packed or Normal Modes
  • Selectable Event Input Sampling Rates Allows Low Power Operation
  • Selectable Glitch Filter on Event Input Monitor
• 15 Selectable Frequency Outputs
• Single Alarm
  • Settable to the Second, Minute, Hour, Day of the Week, Day, or Month
  • Single Event or Pulse Interrupt Mode
• Automatic Backup to Battery or Super Cap
• Power Failure Detection
• On-Chip Oscillator Compensation
• 2 Bytes Battery-Backed User SRAM
• I2C Interface
  • 400kHz Data Transfer Rate
• 400nA Battery Supply Current
• Small Package
  • 10 Ld MSOP

Applications

• Utility Meters
• Set Top Box/Modem
• POS Equipment
• Network Routers, Hubs, Switches, Bridges
• Cellular Infrastructure Equipment
• Fixed Broadband Wireless Equipment
• Test Meters/Fixtures
• Vending Machine Management
• Security and Anti Tampering Applications
  • Panel/Enclosure Status
  • Warranty Reporting
  • Time Stamping Applications
  • Patrol/Security Check (Fire or Light Equipment)
  • Automotive Applications