DS1238A中文资料微管理器芯片数据手册ADI规格书

描述 Description

The DS1238A MicroManager 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 DS1238A also provides early warning detection of a user-defined threshold by driving a non-maskable interrupt.

特性 Features

• Holds microprocessor in check during power transients
• Halts and restarts an out-of-control microprocessor
• 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 200nA of battery current
• Controls external power switch for high current applications
• Debounces pushbutton reset
• Accurate 10% power supply monitoring
• Optional 5% power supply monitoring designated DS1238A-5
• Provides orderly shutdown in microprocessor applications
• Pin-for-pin compatible with MAX691
• Standard 16-pin DIP or space-saving 16-pin SOIC
• Optional industrial temperature range -40°C to +85°C

简介

DS1238A属于集成电路（IC）的监控器。由制造生产的DS1238A监控器PMIC 监控器用于监视和/或控制电路中的电压轨，能够连接微控制器以维持一定的功率限值。监控器类型包括电池备用电路、监控器、多电压监控器、电源监控器、稳压器/监控器、复位计时器、定序器、简单复位/上电复位、智能开/关控制器、系统管理器、电压检测器和看门狗电路。