Low Power RTC with VDD Battery Backed SRAM and Embedded Temp

Compensation ±5ppm with Auto Day Light Saving

The ISL12020 device is a low power real time clock with an embedded Temp sensor for oscillator compensation, clock/calendar, power fail, low battery monitor, brown out indicator, single periodic or polled alarms, intelligent battery backup switching and 128 bytes of battery-backed user SRAM.

Features

• Real Time Clock/Calendar

- Tracks Time in Hours, Minutes and Seconds

- Day of the Week, Day, Month and Year

• On-chip Oscillator Compensation Over the Operating

Temp Range

- ±5ppm over -20°C to +70°C

• Day Light Saving Time

- Customer Programmable

• 15 Selectable Frequency Outputs

• 1 Alarm

- Settable to the Second, Minute, Hour, Day of the Week,

Day, or Month

- Single Event or Pulse Interrupt Mode

• Automatic Backup to Battery or Super Cap

- Operation to VBAT = 1.8V

- 1.0µA Battery Supply Current

• Battery Status Monitor, 2 Levels, Selectable by Customer

to:

- Seven Selectable Voltages for Each Level

• Power Status Brown Out Monitor

• Six Selectable Trip Level, from 4.675V to 2.295V Power

Failure Detection

• Time Stamp during Power to Battery and Battery to Power

Cross Over

- Time Stamp. First VDD to VBAT, and Last VBAT to VDD

• 128 Bytes Battery-Backed User SRAM

• I2C Interface

- 400kHz Clock Frequency

• 8 Ld SOIC Package ISL12020

• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications

• Utility Meters

• POS Equipment

• Medical Application

• Security Related Application

• Vending Machine

• White Goods