Microchip Technology TC64X, TC64XB User Manual

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TC64X/TC64XB Fan Control

Demo Board User’s Guide

 2003 Microchip Technology Inc. DS21401C

Note the following details of the code protection feature on Microchip devices:

• Microchip products meet the specification contained in their particular Microchip Data Sheet.

• Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.

• There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip's Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.

• Microchip is willing to work with the customer who is concerned about the integrity of their code.

• Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
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Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.

Information contained in this publication regarding device
applications and the like is intended through suggestion only
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
No representation or warranty is given and no liability is
assumed by Microchip Technology Incorporated with respect
to the accuracy or use of such information, or infringement of
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The Microchip name and logo, the Microchip logo, Accuron,
dsPIC, K

EELOQ

, MPLAB, PIC, PICmicro, PICSTART,
PRO MATE and PowerSmart are registered trademarks of
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countries.

AmpLab, FilterLab, microID, MXDEV, MXLAB, PICMASTER,
SEEVAL and The Embedded Control Solutions Company are
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Application Maestro, dsPICDEM, dsPICDEM.net, ECAN,
ECONOMONITOR, FanSense, FlexROM, fuzzyLAB,
In-Circuit Serial Programming, ICSP, ICEPIC, microPort,
Migratable Memory, MPASM, MPLIB, MPLINK, MPSIM,
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Serialized Quick Turn Programming (SQTP) is a service mark
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All other trademarks mentioned herein are property of their
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© 2003, Microchip Technology Incorporated, Printed in the
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Printed on recycled paper.

Microchip received QS-9000 quality system
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The Company’s quality system processes and
procedures are QS-9000 compliant for its
PICmicro
devices, Serial EEPROMs, microperipherals,
non-volatile memory and analog products. In
addition, Microchip’s quality system for the
design and manufacture of developmen t
systems is ISO 9001 certified.

®

8-bit MCUs, KEEL

®

code hopping

OQ

DS21401C-page ii  2003 Microchip Technology Inc.

TC64X/TC64XB FAN CONTROL

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DEMO BOARD USER’S GUIDE

Table of Contents

Chapter 1. General Information

1.1 Introduction ..................................................................................................... 1

1.2 TC64X/TC64XB Fan Control Demo Board ..................................................... 2

1.3 Reference Documents .................................................................................... 4

Chapter 2. Getting Started

2.1 TC64X/TC64XB Fan Control Demo Board

Typical Module Configurations ....................................................................... 5

2.2 System Connection For +5V Operation .......................................................... 6

Appendix A. Board Layout and Schematic

A.1 Introduction ..................................................................................................... 7

A.2 Board Layout and Schematic ......................................................................... 7

Appendix B. Bill-of-Materials (BOM)

B.1 Demo Board Components ............................................................................. 9

Worldwide Sales and Service

............................................................................................. 10

 2003 Microchip Technology Inc. DS21401C-page iii

TC64X/TC64XB Fan Control Demo Board User’s Guide

NOTES:

DS21401C-page iv  2003 Microchip Technology Inc.

TC64X/TC64XB FAN CONTROL

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Chapter 1. General Information

1.1 INTRODUCTION

Thank you for purchasing the TC64X/TC64XB Fan Control Demo Board from
Microchip Technology Inc. The TC64X/TC64XB Fan Control Demo Board allows the
user to quickly prototype fan control circuits based on Microchip’s pulse width
modulation (PWM) Fan Control integrated circuits.

These devices will be referred to as TC64X in this document:

•TC642

•TC646

•TC647

•TC648

•TC649

These devices will be referred to as TC64XB in this document:

•TC642B

•TC646B

•TC647B

•TC648B

•TC649B

DEMO BOARD USER’S GUIDE

A versatile sensor input and output driver circuitry allows the Fan Control Module to be
used with virtually any brushless DC fan and standard thermistor. An optional LED
status indicator gives a visual indication of a fan fault (stalled, open or unconnected fan)
or an overtemperature condition.

The TC64X/TC64XB Fan Control Demo Board has the following features:

1. Complete implementation of TC64X or TC64XB fan control circuitry on a

1.5" x 2.0" board

2. Works with standard thermistors

3. Temperature-proportional fan speed control

4. Overtemperature fault detection

5. Fan fault detection

6. Installs directly into user's end equipment

7. Speeds up prototyping, system development and system thermal
characterization

 2003 Microchip Technology Inc. DS21401C-page 1