用户手册 — Microchip Technology DM164123

目录

• Chapter 1. PICDEM™ System Management

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  • 1.1 Introduction

    11
  • 1.2 Highlights

    11
  • 1.3 PICDEM™ System Management Kit Contents

    11
  • 1.4 PICDEM System Management Layout

    12
    • 1.4.1 Board Features

      12
    • 1.4.2 Board Connections

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      • Figure 1-1: PICDEM™ System Management Board

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      • Figure 1-2: PICkit™ Serial Analyzer Pinout

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    • 1.4.3 Heating Element

      14
    • 1.4.4 Board Options

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  • 1.5 Quick Start Guide

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    • 1.5.1 Demonstration Program

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    • 1.5.2 Real-Time Clock: Address 0xA2

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      • Figure 1-3: Real-Time Clock

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    • 1.5.3 Analog-to-Digital Converter (ADC): Address 0xA4

      15
      • Figure 1-4: Analog-to-Digital Converter (ADC)

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    • 1.5.4 Serial EEPROM: Address 0xA8

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      • Figure 1-5: Serial EEPROM

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    • 1.5.5 Thermal Management: Address 0xA6

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      • Figure 1-6: Thermal Management

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    • 1.5.6 General I2C

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      • Figure 1-7: I2C™

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• Chapter 2. Background

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  • 2.1 Introduction

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  • 2.2 Highlights

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  • 2.3 PICDEM™ System Management and PICkit™ Serial Analyzer

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  • 2.4 Fan Speed Control

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    • 2.4.1 Two-wire Fan

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    • 2.4.2 Three-wire Fan

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      • Figure 2-1: three-Wire

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    • 2.4.3 Measuring the Speed of a Two and Three-wire Fan

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      • Figure 2-2: Pulse Stretching

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    • 2.4.4 Four-wire Fan Control

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• Chapter 3. Troubleshooting

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  • 3.1 Introduction

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  • 3.2 Common Problems

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    • 3.2.1 Serial Communications does not appear to be working

      23
    • 3.2.2 Microcontroller does not run after programming using the MPLAB® ICD 2

      23
    • 3.2.3 The fan is not providing proper feedback

      23
    • 3.2.4 Heating element is not heating

      23
    • 3.2.5 Temperature is not changing

      23
• Appendix A. Hardware Schematics

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  • A.1 Introduction

    25
    • Figure A-2: Schematic Sheet 2

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• Appendix B. Register Maps

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  • B.1 Introduction

    27
• Worldwide Sales

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