The ISL12020M device is a low power real time clock (RTC) 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 20 Ld DFN module that contains the RTC and an embedded 32.768kHz quartz crystal. The calibrated oscillator provides less than ±5ppm drift over the full -40°C to +85°C temperature range.
●Features
●• Embedded 32.768kHz Quartz Crystal in the Package
●• 20 Ld DFN Package (for SOIC version, refer to the ISL12022M)
●•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 Supercapacitor
●• VDD and Battery Status Monitors
●• Battery Reseal™ Function to Extend Battery Shelf Life
●• Power Status Brownout Monitor
●• Time Stamp for Battery Switchover
●• 128 Bytes Battery-Backed User SRAM
●•I2C-Bus™
