The DS1210 Nonvolatile Controller Chip is a CMOS circuit which solves the application problem of converting CMOS RAM into nonvolatile memory. Key Features # Converts CMOS RAMs into Nonvolatile Memories # Unconditionally Write Protects when VCC is Out-of-Tolerance # Automatically Switches to Battery when Power-Fail Occurs # Space-Saving 8-Pin DIP # Consumes Less Than 100nA of Battery Current # Tests Battery Condition on Power up # Provides for Redundant Batteries # Optional 5% or 10% Power-Fail Detection # Low Forward Voltage Drop on the VCCSwitch # Optional 16-Pin SO Surface Mount Package # Optional Industrial (N) Temperature Range of -40°C to +85°C # UL Certified