DS1314E/T&R

DS1314E/T&R Description   Analog Devices DS1314E/T&R is a non-volatile controller that solves the application problem of converting CMOS RAM into non-volatile memory.
The DS1314E/T&R has a variety of features, including support for battery backup and detection of remaining lithium battery capacity. DS1314E/T&R is suitable for those applications where the supply voltage is between 4.5V and 5.5V.   DS1314ET&R
Features   Converts CMOS SRAM into nonvolatilememoryUnconditionally write-protects SRAM whenVCC is out of toleranceAutomatically switches to battery backupsupply when VCC power failure occursMonitors voltage of a lithium cell andprovides advanced warning of impendingbattery failureSignals low-battery condition on active lowBattery Warning output signalAutomatic VCC power-fail detection for 3.0Vor 3.3V power suppliesSpace-saving 8-pin DIP and SOIC packages Optional 16-pin SOIC and 20-pin TSSOPversions reset processor when power failureoccurs and hold processor in reset duringsystem power-upIndustrial temperature range of -40°C to+85°C   DS1314ET&R Applications   Automotive electronicsComputer optical driveBluetooth moduleSet-top box