Low Power RTC with Battery ReSeal?, 2 IRQs, Hundredths of a Second Time, and Crystal Compensation

The ISL12082 device is a low power real time clock with timing and crystal compensation, clock/calendar, power fail indicator, 2 IRQs, periodic or polled alarm, timer/watchdog, and intelligent battery backup switching.

The oscillator uses an external, low-cost 32.768kHz crystal. The real time clock tracks time with separate registers for hours, minutes, seconds and hundredths of a second. 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.

特性 Features

? Real Time Clock/Calendar

- Tracks Time in Hours, Minutes, Seconds, and Hundredths of a Second

- Day of the Week, Day, Month, and Year

? 4 Selectable Frequency Outputs

? Alarm

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

- Single Event or Pulse Interrupt Mode

? Timer

- 4 Selectable Timer Functions

- 4 Selectable Timer Clock Frequencies

- Single Event or Pulse Interrupt Mode

? Automatic Backup to Battery or Supercapacitor

? Power Failure Detection

? Battery ReSeal?

? On-Chip Oscillator Compensation

? I2C Interface

- 400kHz Data Transfer Rate

? 800nA Battery Supply Current

? Small Package Options

- 8 Ld SOIC Package

- 10 Ld MSOP Package

? Pb-Free (RoHS Compliant)

Applications

? Utility Meters

? HVAC Equipment

? Audio/Video Components

? Set-Top Box/Television

? Modems

? Network Routers, Hubs, Switches, Bridges

? Cellular Infrastructure Equipment

? Fixed Broadband Wireless Equipment

? Pagers/PDA

? POS Equipment

? Test Meters/Fixtures

? Office Automation (Copiers, Fax)

? Home Appliances

? Computer Products