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1带8非易失控制器芯片

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主要特征

简化框图

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数据资料 1带8非易失控制器芯片 Nov 18, 1999

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主要特征

  • Controller circuitry with monitoring and logic functions to make CMOS RAM nonvolatile
  • Controls up to 8 memories
  • Monitors Vcc and write-protects when out of tolerance
  • Consumes less than 100nA battery current
  • Tests battery condition on power-up
  • Supports redundant batteries
  • Thermal operating ranges:
    • DS1211: 0°C to +70°C
    • DS1211-IND: -40° to +85°C
  • Voltage/tolerances: 5V ±5% or ±10%

应用/用途

描述

The DS1211 Nonvolatile Controller x8 Chip performs five circuit functions required to render standard CMOS RAM nonvolatile:

  • Monitor Vcc using a precise comparator that detects power-fail and inhibits chip-enable
  • Monitor battery status and warn the processor of low status
  • Switch power between a battery and Vcc, whichever is greater
  • Write-protect data
  • Provide for automatically switching between two batteries Power-fail detection occurs in the range of 4.75V to 4.5V with the tolerance Pin 3 grounded. If Pin 3 in connected to Vcco, then power-fail detection occurs in the range of 4.5 volts to 4.25 volts.

    By combining the DS1211 nonvolatile controller/decoder chip and lithium batteries, nonvolatile RAM operation can be achieved for up to eight CMOS memories.
  • 简化框图

    DS1211:引脚分配 DS1211:引脚分配 Zoom icon

    Technical Docs

    数据资料 1带8非易失控制器芯片 Nov 18, 1999

    支持和培训

    在Maxim的知识库中搜索技术问题的答案

    过滤搜索

    Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心