TC32MCDB datasheet(1/12 Pages) MICROCHIP

Nome de Peças	TC32MCDB

Descrição Electrónicos	ECONOMONITOR?? 3-Pin System Supervisor with Power Supply Monitor and Watchdog

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Fabricante Electrônico	MICROCHIP [Microchip Technology]

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DS21402B-page 1

TC32M

Features

• Incorporates the Functionality of the Industry

Standard TC1232 (Processor Monitor, Watchdog

and Manual Override RESET Controller) into a

Small, Lower Cost Package

• Guards Against Unstable Processor Operation

Resulting from Power "Brown-Out"

• Automatically Halts and Restarts an Out-of-

Control Microprocessor

• Output can be Wire-ORed, or Hooked to Manual

RESET Push-button Switch

• Space-Saving 3-Pin TO-92 or SOT-223 Package

Applications

• All Microprocessor-Based Systems

• Battery Powered Computers and Controllers

• Automotive Systems

• Intelligent Instruments

• Critical Processor Monitoring

• Embedded Controllers

Device Selection Table

Package Type

General Description

The TC32M is a fully-integrated processor supervisor

in a 3-pin package. It provides three important func-

tions to safeguard processor sanity: precision power

on/off RESET control, watchdog timer and external

RESET override.

On power-up, the TC32M holds the processor in the

reset state for a minimum of 500msec after VDD is

within tolerance to ensure a stable system start-up.

Microprocessor sanity is monitored by the on-board

watchdog circuit. The microprocessor must provide a

high-to-low level shift (through an external resistor

divider) on the RS pin of the TC32M. Should the

processor fail to supply this signal within the specified

timeout period (typically 700msec), an out-of-control

processor is indicated and the TC32M issues a

processor reset as a result.

The output of the TC32M can be wire-ORed with a

push-button switch (or electronic signal) to override the

TC32M and unconditionally reset the processor. When

connected to a push-button switch, the TC32M

provides contact debounce.

The TC32M is packaged in a space-saving TO-92 or

SOT-223 package. It provides all of the functionality of

the industry standard TC1232 in a smaller, lower cost

configuration.

Part Number

Package

Temp. Range

TC32MCDB

SOT-223

0°C to +70°C

TC32MCZB

TO-92

0°C to +70°C

TC32MEDB

SOT-223

-40°C to +85°C

TC32MEZB

TO-92

-40°C to +85°C

1

2

4

3

23

GND

TC32MCDB

TC32MEDB

TC32MCZB

TC32MEZB

VDD

RS

ECONOMONITOR™ – 3-Pin System Supervisor with

Power Supply Monitor and Watchdog

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TC32MCDB Folha de dados(PDF) 1 Page - Microchip Technology

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