FM1233ADS数据手册集成电路（IC）的监控器规格书PDF

描述 Description

General Description
The FM1233A is a supervisor circuit that monitors a microprocessor power supply or other system voltage and issues a reset pulse when a fault condition exists. Several different threshold voltages are offered to accommodate 3.3V and 3.0V systems with different tolerances.
FM1233A features a precision temperature-compensated voltage reference and comparator. When VCC falls to the threshold voltage, a RESET pulse is issued, holding the output in the active state. When power rises above VTH, the reset remains asserted for a minimum period (tRST) to allow the system clock and other circuits to stabilize. The reset output of FM1233A is of open-drain active low type.
The FM1233A also can monitor a switch closure on its output, enabling it to recognize an external reset from a pushbutton switch or a µP. In the case of a switch, the closure will be debounced by circuitry internal to the FM1233A.

特性 Features

■ Precision monitoring of 3.3V and lower voltage
   microprocessor systems
■ VTH values of 3.08V, 2.88V and 2.72V
■ Automatic restart of microprocessor after power failure
■ Reset Timeout Period Choice:
   – Options AC and AD: 140ms (min)/256ms (typ)
   – Option ABA: 17ms (min)/32ms (typ)
   – Available on request: 64ms (typ) and 128ms (typ)
■ Internal 5kΩ pull-up resistor
■ Operating Temperature -40°C to +105°C
■ Monitors external pushbutton override
■ Internal switch debounce circuitry
■ SOT23-3 package

简介

FM1233ADS属于集成电路（IC）的监控器。由制造生产的FM1233ADS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。