ISL12058

Low Cost, Low Power I<sup>2</sup>C-Bus™ Real Time Clock/Calendar Low Power and Low Cost RTC with Alarm Function

OVERVIEW

The ISL12058 device is a low power real time clock with clock/calendar, and alarm function.

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, Date, Month, and Year
  • 4 Selectable Frequency Outputs
  • 2 Alarms
  • Settable to the Second, Minute, Hour, Day of the Week, Date, or Month
  • I2C Interface
  • 400kHz Data Transfer Rate
  • Small Package Options
  • 8 Ld 2mmx2mm µTDFN Package
  • 8 Ld 3mmx3mm TDFN Package
  • 8 Ld MSOP Package
  • 8 Ld SOIC Package
  • Pb-Free (RoHS Compliant)
  • Low Cost 3V Alternative to ISL1208 and ISL12082

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL12058
Production Status
Mass Production
Supply Voltage Vcc (Min) (V)
1.4
Supply Voltage Vcc (Max) (V)
3.6
Alarms
2
Selectable Frequency Output
4
CPU Supervisory Function POR
No
CPU Supervisory Function Watchdog Timer
No
Battery Seal
N/A
Battery Backup
N/A
IRQ_Bar
IRQ1/FOUT
FOUT
IRQ_bar/FOUT
Other Functions
Dual Alarms
Memory Type
RAM
Bus/Output Interface
I2C
Time Keeping Current
0.5 µA
IRQ Pin
Yes
Freq. Out Pin
Yes
Timer
No
Tamper Detect
No
Reset
No
Qualification Level
Standard
Battery Voltage Range (V)
N/A
Supply Voltage Vcc Range (V)
1.4 to 3.6
Can Sample
YES
Temperature Range
-40 to +85

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