FM1233E

更新时间： 2024-11-17 22:40:55

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		监控
页数	文件大小	规格书
7页	34K
描述
3-Pin レC Supervisor Circuit

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数据手册

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FM1233E 数据手册

February 2003

FM1233E

3-Pin µC Supervisor Circuit

General Description

Features

The FM1233E is a supervisor circuit that monitors a micropro-

cessor power supply or other system voltage and issues a reset

pulse when a fault condition exists. Several different threshold

voltages are offered to accommodate 3V systems with different

tolerances.

Precision monitoring of 3.3V and lower voltage

microprocessor systems

V values of 2.88V, 2.72V

Automatic restart of microprocessor after power failure

140ms (min) power-on RESET delay (typ.: 256ms)

Internal 5kΩ pull-up resistor

The device features a precision temperature-compensated volt-

age reference and comparator. When V falls to the threshold

Other reset choices available: 32 to 128ms

Operating Temperature -40°C to +105°C

SOT23-3 package

voltage, a RESET pulse is issued, holding the output in the

active state. When power rises above V , the reset remains for

approximately 250 ms to allow the system clock and other cir-

cuits to stabilize. The reset output of FM1233E is of open-drain

active low type.

Typical Operating Circuit

FM1233E

Controller

RESET

GND

Connection Diagram

GND

FM1233E 3

RESET

SOT23-3 Package

FM1233E Rev. D

www.fairchildsemi.com

12 3 4 5 6 7

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