DS1314 - Maxim Integrated

DS1314 3V Nonvolatile Controller

VCCI VCCO VBAT - Power Supply Input - SRAM Power Supply Output - Backup Battery Input CEI - Chip Enable Input CEO TOL BW - Chip Enable Output - VCC Tolerance Select - Battery Warning Output (Open Drain) RST GND NC - Reset Output (Open Drain) - Ground - No Connection DESCRIPTION The DS1314 Nonvolatile Controller with Battery Monitor is a CMOS circuit .

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 durin.