MIC1232数据手册集成电路（IC）的监控器规格书PDF

描述 Description

The MIC1232 is a multifunction circuit which monitors microprocessor activity, external reset and power supplies in microprocessor based systems. The circuit functions include a watchdog time, power supply monitor, microprocessor reset, and manual pushbutton reset input.The power supply line is monitored with a comparator and an internal voltage reference. /RST is forced low when an out-of-tolerance condition exists and remains asserted for at least 250ms after VCC rises above the threshold voltage (4.5V or 4.75V). The /RST pin will remain logic low with VCC as low as 1.4V.The Watchdog input (/ST) monitors µP activity and will assert /RST if no µP activity has occurred with in the watchdog timeout period. The watchdog timeout period is selectable with nominal period of 150, 600, 1200 milliseconds.

特性 Features

•Power OK/Reset time delay, 250ms min.
•Watchdog timer, 150ms, 600ms, or 1.2s typical
•Precision supply voltage monitor, select between 5% or 10% of supply voltage
•Available in 8-pin surface mount (SO)
•Debounced External reset input
•Low supply current, <18µA typical

简介

MIC1232属于集成电路（IC）的监控器。由制造生产的MIC1232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。