ISL12024IRTC: Real-Time Clock/Calendar with Embedded Unique ID

The ISL12024IRTCZ 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 device contains a 64-bit unique ID number for security and product identification applications. It is housed in a tiny 3mmx3mm TDFN package for small handheld applications. The clock output defaults to 32.768kHz on initial power-up for low power microcontroller clocking applications. The low 800nA battery supply current extends backup battery life.

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
  • Default 32.768kHz Output at IRQ/FOUT (FO1 = 0, FO0 = 1)
  • 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 Interface
    • 400kHz Data Transfer Rate
  • 800nA Battery Supply Current
  • Available in 8 Ld TDFN package
  • 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 Diagram
Application Notes
TitleTypeUpdatedSizeOther Languages
AN1549: Addressing Power Issues in Real Time Clock ApplicationsPDF13 Nov 201469 KB
Datasheets
TitleTypeUpdatedSizeOther Languages
ISL12024IRTC DatasheetPDF17 Nov 2014420 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
ISL12024IRTCZ8 Ld DFN0.02281260RoHS
ISL12024IRTCZ-T8 Ld DFN T+R0.02281260RoHS
ISL12024IRTC Datasheet 17 Nov 2014
8 Ld DFN T+R ISL12024IRTC
ISL12024IRTC
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