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RTC, Timekeeper NVSRAM, I2C, 2.7 V to 5.5 V, DFN-20


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Manufacturer Part No:
Newark Part No.:
Technical Datasheet:
ISL12020MIRZ   Datasheet
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Product Overview

The ISL12020MIRZ is a low-power Real Time Clock with an embedded temperature sensor and crystal. Device functions include oscillator compensation, clock/calendar, power fail and low battery monitors, brownout indicator, one-time, periodic or polled alarms, intelligent battery backup switching, Battery Reseal™ function and 128-bytes of battery-backed user SRAM. The device is offered in a 20Ld DFN module that contains the RTC and an embedded 32.768kHz quartz crystal. The calibrated oscillator provides less than ±5ppm drift across the 0 to 85°C temperature range. The RTC tracks time with separate registers for hours, minutes and seconds. The calendar registers track date, month, year and day of the week and are accurate through 2099, with automatic leap year correction. Daylight Savings time adjustment is done automatically, using parameters entered by the user. Power fail and battery monitors offer user-selectable trip levels.
  • Calendar
  • On-chip oscillator temperature compensation
  • 10-bit Digital temperature sensor output
  • 15 Selectable frequency outputs
  • Interrupt for alarm or 15 selectable frequency outputs
  • Automatic backup to battery or super capacitor
  • VDD and battery status monitors
  • Battery Reseal™ function to extend battery shelf life
  • Power status brownout monitor
  • Time stamp for battery switchover
  • 128-byte Battery-backed user SRAM


Clock & Timing

Product Information

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Technical Documents (5)

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CAD Models - Notice
CAD Models and drawings are provided to you on a revocable limited licence for your internal use only but remain the property of the manufacturer who retain all intellectual property rights and ownership. They are provided to assist you in decision making and as design guide but are not guaranteed to be error free, accurate or up to date and is not intended to be taken as advice.
Use of these CAD models and other options provided are downloaded and used entirely at your own risk and by continuing you confirm acceptance of the above.

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