The DS1236 MicroManager Chip provides all the necessary functions for power supply monitoring, reset control, and memory backup in microprocessor-based systems. A precise internal voltage reference and comparator circuit monitor power supply status. When an out-of-tolerance condition occurs, the microprocessor reset and power-fail outputs are forced active, and static RAM control unconditionally write protects external memory. The DS1236 also provides early warning detection of a user-defined threshold by driving a non-maskable interrupt. External reset control is provided by a pushbutton reset input which is debounced and activates reset outputs. An internal watchdog timer can also force the reset outputs to the active state if the strobe input is not driven low prior to watchdog timeout. Reset control and wake-up/sleep control inputs also provide the necessary signals for orderly shutdown and startup in battery backup and battery operated applications.


  • Holds microprocessor in check during power transients
  • Halts and restarts an out-of-control microprocessor
  • Monitors pushbutton for external override
  • Warns microprocessor of an impending power failure
  • Converts CMOS SRAM into nonvolatile memory
  • Unconditionally write-protects memory when power supply is out of tolerance
  • Consumes less than 100 nA of battery current at 25°C
  • Controls external power switch for high current applications
  • Accurate 10% power supply monitoring
  • Optional 5% power supply monitoring designated DS1236-5
  • Provides orderly shutdown in nonvolatile microprocessor applications
  • Supplies necessary control for low-power "stop mode" in battery operated hand-held applications
  • Standard 16-pin DIP or space-saving 16-pin SOIC
  • Optional industrial temperature range -40°C to +85°C
  • Electrically Resettable Freshness Seal
产品可靠性报告: DS1236.pdf 
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C   Material Composition  

备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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