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MAXIM - DS1314 3V Nonvolatile Controller with Lithium Battery Monitor - Supervisors, Voltage Monitors, Sequencers DS1314

 DS1314 3V Nonvolatile Controller with Lithium Battery Monitor 此图片只做参考用
真图请以实物为准
库存状况
  • 库存数量: 1370
  • 包装规格:
  • 最小订单量:1
  • 多重订单量:1
  • 单位价格(不含税):CNY 34.00
数量:
价格
    数量单位价格(不含税)
    1-24CNY 34.00
    25-49CNY 32.30
    50-99CNY 30.60
    100-249CNY 28.90
  • 制造商:MAXIM
  • 库存编号:1616244
  • 商品型号:DS1314S-2
  • RoHS胁从产品:
  • 备注:
  • 产品描述:The DS1314 Nonvolatile Controller with Battery Monitor is a CMOS circuit which solves the application problem of converting CMOS RAM into nonvolatile memory.
The DS1314 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 DS1314 performs the important function of monitoring the remaining 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 DS1314 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.

Key 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 during system power-up
Industrial temperature range of -40°C to +85°C
Underwriters Laboratories (UL) Recognized

Diagram

DS1314: Functional Block Diagram
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