[ArtsChip]

DESCRIPTION
The DS1312 Nonvalatile Controller with Battery Monitor is a CMOS circuit which solves the application problem of converting CMOS RAM into nonvolatile 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.

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
● Optional 5% or 10% power-fail detection
● Space-saving 8-pin DIP and SOIC packages
● Optional 16-pin SOIC and 20-pin TSSOP versions reset process or when power failure occurs and hold processor in reset during system power-up
● Industrial temperature range of -40℃ to +85℃