ISL12024: Real-Time Clock/Calendar with Embedded Unique ID

The ISL12024 device is a micro-power real-time clock with embedded 64-bit unique ID, timing and crystal compensation, clock/calender, power-fail indicator, two periodic or polled alarms, intelligent battery backup switching, and integrated 512x8-bit EEPROM configured in 16 Bytes per page.

The oscillator uses an external, low-cost 32.768kHz crystal. The real-time clock tracks time with separate registers for hours, minutes, and seconds. The device has calendar registers for date, month, year and day of the week. The calendar is accurate through 2099, with automatic leap year correction.

Key Features
  • Real-Time Clock/Calendar
    • Tracks Time in Hours, Minutes, and Seconds
    • Day of the Week, Day, Month and Year
    • 3 Selectable Frequency Outputs
  • 64-bit Unique ID
  • 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 Super Cap
  • 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-Bytes Page Write Mode (32 total pages)
    • 8 Modes of BlockLock™ Protection
    • Single Byte Write Capability
  • High Reliability
    • Data Retention: 50 years
    • Endurance: 2,000,000 Cycles Per Byte
  • I2C Bus™
    • 400kHz Data Transfer Rate
  • 800nA Battery Supply Current
  • Package Options
    • 8 Ld SOIC and 8 Ld TSSOP Packages
    • Pin-Compatible with the ISL12026
  • Pb-Free (RoHS Compliant)
Applications
  • Utility Meters
  • Audio Video Equipment
  • Modems
  • Network Routers, Hubs, Switches, Bridges
  • Cellular Infrastructure Equipment
  • Fixed Broadband Wireless Equipment
  • Pagers/PDA
  • POS Equipment
  • Test Meters/Fixtures
  • Office Automation (Copiers, Fax)
  • Computer Products
  • Security Related Application
Typical DiagramProduct Image
Application Notes
TitleTypeUpdatedSizeOther Languages
AN1549: Addressing Power Issues in Real Time Clock ApplicationsPDF13 Nov 201469 KB
Datasheets
TitleTypeUpdatedSizeOther Languages
ISL12024 DatasheetPDF17 Nov 2014386 KB
Software
TitleTypeUpdatedSizeOther Languages
Real Time Clock (RTC) Evaluation Installer for Windows 2000EXE31 Oct 20141.62 MB
Real Time Clock (RTC) Evaluation Installer for Windows 8EXE31 Oct 20147.85 MB
Real Time Clock (RTC) Evaluation Installer for Windows XP / Windows 7EXE31 Oct 20143.02 MB
User Guides
TitleTypeUpdatedSizeOther Languages
Real Time Clock USB Evaluation Board User GuidePDF12 May 2015487 KB
Miscellaneous
TitleTypeUpdatedSizeOther Languages
RTC WIN8 Preinstallation ProcedurePDF19 Nov 2014849 KB
Order Information
Part NumberPackage TypeWeight(g)PinsMSL RatingPeak Temp (°C)RoHS Status
ISL12024IBZ8 Ld SOIC0.07281260RoHS
ISL12024IBZ-T8 Ld SOIC T+R0.07281260RoHS
ISL12024IVZ8 Ld TSSOP0.03381260RoHS
ISL12024IVZ-T8 Ld TSSOP T+R0.03381260RoHS
ISL12024DBEV1ZN/ARoHS
ISL12024 Datasheet 17 Nov 2014
8 Ld SOIC T+R ISL84514
8 Ld TSSOP T+R ISL12024
ISL12024
AN1549: Addressing Power Issues in Real Time Clock Applications 13 Nov 2014
Real Time Clock (RTC) Evaluation Installer for Windows 2000 31 Oct 2014
Real Time Clock (RTC) Evaluation Installer for Windows 8 31 Oct 2014
Real Time Clock (RTC) Evaluation Installer for Windows XP / Windows 7 31 Oct 2014
Real Time Clock USB Evaluation Board User Guide 12 May 2015
RTC WIN8 Preinstallation Procedure 19 Nov 2014