DS1687 - (DS1685 / DS1687) 3V/5V Real-Time Clocks
DS1687 Features
* Incorporates Industry-Standard DS1287 PC Clock plus Enhanced Features Such as:
* Y2K Compliant
* +3V or +5V Operation
* 64-Bit Silicon Serial Number
* Power-Control Circuitry Supports System PowerOn from Date/Time Alarm or Key Closure
* 32kHz Output for Power Management
* Cry