ISL12024

Real-Time Clock/Calendar with Embedded Unique ID

Product Status: Mass Production

OVERVIEW

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)

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL12024
Basic Information
Production Status
Mass Production
Supply Voltage Vcc (Min) (V)
2.7
Supply Voltage Vcc (Max) (V)
5.5
VBAT (min)
1.8 V
VBAT (max)
5.5 V
IBAT (nA)
850
Alarms
2
Crystal Frequency Trimming
Yes
Selectable Frequency Output
3
CPU Supervisory Function POR
No
CPU Supervisory Function Watchdog Timer
No
Battery Seal
Yes
Battery Backup
Yes
IRQ_Bar
IRQ_bar/FOUT
FOUT
IRQ_bar/FOUT
RESET_bar
No
Oscillator Compensation (ppm)
-336 to +337
SRAM
512x8-Bit EEPROM
Other Functions
64-bit Unique ID
Memory Type
EEPROM
Bus/Output Interface
I2C
Time Keeping Current
3 µA
IRQ Pin
Yes
Freq. Out Pin
Yes
Timer
No
Tamper Detect
No
Reset
No
Qualification Level
Standard
Battery Voltage Range (V)
1.8 to 5.5
Supply Voltage Vcc Range (V)
2.7 to 5.5
Can Sample
YES
Temperature Range
-40 to +85

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