FM811MUX

更新时间： 2024-10-31 21:54:07

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		微处理器复位电路
页数	文件大小	规格书
6页	45K
描述
Microprocessor Reset Circuits

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数据手册

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FM811MUX 数据手册

www.fairchildsemi.com

FM8 1 1 /8 1 2

Mic ro p ro c e s s o r Re s e t Circ u it s

Features

Description

• Feature

The FM811/FM812 is a low cost microprocessor supervisory

circuit that asserts a reset if the power supply drops below a

designated threshold or the manual reset pin is forced low.

Several different reset thresholds are available to

• Precision Voltage Monitor for 3V, 3.3V or 5V Power

Supplies

• 6µA Supply Current

• 140ms Minimum Reset Pulse Width

• RESET Remains Valid with V_CCas Low as 1.4V

• Active Low Manual Reset Input

• No External Components

• 4-Pin SOT-143 Package

accommodate systems operating at 3V, 3.3V or 5V.

The FM811 has an active low RESET output, while the

FM812 offers an active high RESET output. The reset output

is guaranteed to remain asserted for a minimum of 140ms

after V_CChas risen above the designated reset threshold.

The FM811/FM812 is available in a 4-pin SOT-143.

Applications

• Critical Microprocessor Power Monitoring

• Portable Equipment

• Intelligent Instruments

• Computers & Printers

• Controllers

Typical Applications

V_CC

FM811

FM812

µP

RESET

INPUT

RESET

(RESET)

( ) = FM812

PRELIMINARY INFORMATION describes products that are in the design stage. Specifications may change

in any manner whatever without notice. Contact Fairchild Semiconductor for current information.

REV. 1.5.1 7/15/02

12 3 4 5 6

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