CAT1832数据手册集成电路（IC）的监控器规格书PDF

描述 Description

The CAT1832 voltage supervisor can halt and restart a 'hung-up' or 'stalled' microprocessor, restart a microprocessor after a power failure, and debounce a manual/push-button microprocessor reset switch. The device is a drop in replacement for the Maxim/Dallas Semiconductor DS1832 supervisor.Precision reference and comparator circuits monitor the 3.3 V system power supply voltage, VCC. During power-up or when the power supply falls outside selectable tolerance limits, both the RESET and RESET become active. After the power supply voltage rises above the RESET threshold voltage, the reset signals remain active for a minimum of 250 ms, allowing the power supply and system processor to stabilize. The trip-point tolerance input, TOL, selects the trip level tolerance to be 10% or 20% for the CAT1832 3.3 V supply. Each device has a push-pull, active HIGH reset output. The CAT1832 also has a push-pull, active LOW reset output.A debounced manual reset input activates the reset outputs and holds them active for a minimum period of 250 ms after being released. Also included is a watchdog timer to reset a microprocessor that has stopped due to a software or hardware failure. Three watchdog time-out periods are selectable: 150 ms, 600 ms and 1.2 sec. If the ST input is not strobed low before the watchdog time out period expires, the reset signals become active for a minimum of 250 ms.

特性 Features

Selectable reset voltage tolerance - CAT1232LP for 5.0 V supply - CAT1832 for 3.3 V supply
Selectable watchdog period: 150 ms, 600 ms or 1.2 sec
Two reset outputs - Active high, push-pull reset output - Active low, push-pull reset output (CAT1832)
Debounced manual push button reset
Compact SOIC and MSOP packages

应用 Application

Microprocessor systemsPortable equipmentControllersSingle board computersInstrumentationTelecommunications

简介

CAT1832属于集成电路（IC）的监控器。由制造生产的CAT1832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。