DS1312S-2+

The DS1312S-2+ is a non-volatile controller with lithium battery monitor in 8 pin NSOIC package. This non-volatile controller with battery monitor is a CMOS circuit which solves application problem of converting CMOS RAM into non-volatile memory. Incoming power is monitored for an out of tolerance condition. When such a condition is detected, chip enable is inhibited to accomplish write protection and the battery is switched on to supply the RAM with uninterrupted power. Special circuitry uses a low leakage CMOS process which affords precise voltage detection at extremely low battery consumption. In addition to battery backup support device performs important function of monitoring remaining capacity of lithium battery and providing a warning before battery reaches end of life.