DS1312 - 非易失控制器，带有锂电池监测器

DS1312是Maxim美信半导体公司的一款存储器产品，DS1312是非易失控制器，带有锂电池监测器，本站介绍了DS1312的封装应用图解、特点和优点、功能等，并给出了与DS1312相关的Maxim元器件型号供参考。

DS1312 - 非易失控制器，带有锂电池监测器 - 存储器 - Maxim美信半导体高性能芯片品质 - 美信半导体

产品概述

The DS1312 Nonvolatile 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.

In addition to battery-backup support, the DS1312 performs the important function of monitoring theremaining capacity of the lithium battery and providing a warning before the battery reaches end-of-life. Because the open-circuit voltage of a lithium backup battery remains relatively constant over the majority of its life, accurate battery monitoring requires loaded-battery voltage measurement. The DS1312 performs such measurement by periodically comparing the voltage of the battery as it supports an internal resistive load with a carefully selected reference voltage. If the battery voltage falls below the reference voltage under such conditions, the battery will soon reach end-of-life. As a result, the Battery Warning pin is activated to signal the need for battery replacement.

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