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An Arduino compatible library for ISL1208 RTC IC from Intersil.
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.vscode Updated example, updated some functions May 25, 2019
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README.md

ISL1208-RTC-Library

An Arduino compatible library (will support ESP8266, ESP32 or pretty much any other boards with Arduino support) for Intersil ISL1208 real-time clock IC available in MSOP-8 package. Following are its features.

  • Real Time Clock/Calendar
    • Tracks Time in Hours, Minutes, and Seconds
    • Day of the Week, Day, Month, and Year
  • 15 Selectable Frequency Outputs
  • Single 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 Capacitor
  • Power Failure Detection
  • On-Chip Oscillator Compensation
  • 2 Bytes Battery-Backed User SRAM
  • I2C Interface
    • 400kHz Data Transfer Rate
  • 400nA Battery Supply Current
  • Same Pin Out as ST M41Txx and Maxim DS13xx Devices
  • Small Package Options
    • 8 Ld MSOP and SOIC Packages
    • 8 Ld TDFN Package
  • Pb-Free Available (RoHS Compliant)

Link to datasheet : https://www.intersil.com/content/dam/intersil/documents/isl1/isl1208.pdf

Tutorial

A full tutorial of this library is available at my project website - https://www.vishnumaiea.in/projects/hardware/interfacing-intersil-isl1208-rtc-with-arduino

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