DS1238
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DS1238

微管理器芯片

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产品详情
特性
  • Power fail detect with referenced comparator, NMI:
    • Warns microprocessor of an impending power failure
    • Holds microprocessor in check during power transients
    • Halts and restarts an out-of-control microprocessor
    • Provides orderly shutdown in nonvolatile microprocessor applications
    • Invokes sleep mode
  • Pushbutton reset:
    • Monitors pushbutton for external override
    • Controls external power switch for high-current applications
    • Controls low-power stop mode in battery operated hand-held applications
  • Watchdog timer
  • 5V operation with active high and low resets:
    • ±5% of 5V (DS1238-5, DS1238A-5)
    • ±10% of 5V (DS1238, DS1238A)
  • Battery switch:
    • Converts CMOS SRAM into nonvolatile memory
  • Control pins gate to external power switch for high-current applications
  • CE control:
    • Unconditionally write-protects memory when power supply is out of tolerance
  • Optional freshness mode (DS1238) seals battery until first power-on
  • Consumes less than 200nA of battery current at 25°C
  • Operating ranges:
    • DS1238, DS1238A: 0°C to +70°C
    • DS1238-IND, DS1238A-IND: -40°C to +85°C
  • Pin-for-pin compatibility with MAX691, MAX693, MAX695
  • Optional internal or external timing control

产品技术资料帮助

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ADI公司所提供的资料均视为准确、可靠。但本公司不为用户在应用过程中侵犯任何专利权或第三方权利承担任何责任。技术指标的修改不再另行通知。本公司既没有含蓄的允许,也不允许借用ADI公司的专利或专利权的名义。本文出现的商标和注册商标所有权分别属于相应的公司。

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