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FEATURES

 Converts CMOS SRAM into nonvolatile memory

•   Unconditionally write-protects SRAM when VCC is out of tolerance

•   Automatically switches to battery backup supply when VCC power failure occurs

•   Monitors voltage of a lithium cell and provides advanced warning of impending battery failure

•   Signals low-battery condition on active low Battery Warning output signal

•   Automatic VCC power-fail detection for 3.0V or 3.3V power supplies

•   Space-saving 8-pin DIP and SOIC packages

•   Optional 16-pin SOIC and 20-pin TSSOP

  versions reset processor when power failure occurs and hold processor in reset during system power-up

•   Industrial temperature range of -40°C to +85°C