MAX808M数据手册集成电路（IC）的监控器规格书PDF

描述 Description

The MAX801/MAX808 microprocessor (µP) supervisory circuits monitor and control the activities of +5V µPs by providing backup-battery switchover, low-line indication, and µP reset. Additional features include a watchdog for the MAX801 and CMOS RAM write protection for the MAX808.
The MAX801/MAX808 offer a choice of reset-threshold voltage (denoted by suffix letter): 4.675V (L), 4.575V (N), and 4.425V (M). These devices are available in 8-pin DIP and SO packages.

特性 Features

• Precision Voltage Monitoring, ±1.5% Reset Accuracy
• 200ms Power-OK/Reset Time Delay
• Active-low RESET Output (MAX808)
• RESET and active-low RESET Outputs (MAX801)
• Watchdog Timer (MAX801)
• On-Board Gating of Chip-Enable Signals (MAX808):
• Memory Write-Cycle Completion
• 3ns CE Gate Propagation Delay
• 1µA Standby Current
• Power Switching:
• 250mA in VCC Mode
• 20mA in Battery-Backup Mode
• MaxCap™/SuperCap™ Compatible
• Active-low RESET Guaranteed Valid to VCC = 1V
• Low-Line Threshold 52mV Above Reset Threshold

应用 Application

• 计算机：台式机、工作站和服务器
• 控制器
• 精确的µP监控
• 嵌入式系统
• 智能仪表
• 便携式电池供电设备

简介

MAX808M属于集成电路（IC）的监控器。由制造生产的MAX808M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。