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.

特性 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