Microchip Technology MCP47X6 User guide

MCP47X6

PICtail™ Plus

Daughter Board

User’s Guide

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 mean that we are guaranteeing the product as “unbreakable.”

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 t he lik e is provided only for your convenience and may be su perseded by upda t es . It is y our responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in life supp ort and/or safety ap plications is entir ely at the buyer’s risk, and the buyer agrees to defend, indemnify and hold harmless M icrochip from any and all dama ges, claims, suits, or expenses re sulting from such use. No licens es are conveyed, implicitly or otherwise, under any Microchip intellectual property rights.

Trademarks

The Microchip name and logo, the Microchip logo, dsPIC, K

EELOQ, KEELOQ logo, MPLAB, PIC, PICmicro, PICSTART,

PIC

logo, rfPIC and UNI/O are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries.

FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor, MXDEV, MXLAB, SEEVAL and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A.

Analog-for-the-Digital Age, Application Maestro, chipKIT, chipKIT logo, CodeGuard, dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN, ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial Programming, ICSP, Mindi, MiWi, MPASM, MPLAB Certified logo, MPLIB, MPLINK, mTouch, Omniscient Code Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit, PICtail, REAL ICE, rfLAB, Select Mode, Total Endurance, TSHARC, UniWinDriver, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries.

SQTP is a service mark of Microchip Technology Incorporated in the U.S.A.

All other trademarks mentioned herein are property of their respective companies.

Printed on recycled paper.

ISBN: 978-1-61341-709-6

Microchip received ISO/TS-16949:2009 certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona; Gresham, Oregon and design centers in California and India. The Company’s quality system processes and procedures are for its PIC devices, Serial EEPROMs, microperipherals, nonvolatile memory and analog products. In addition, Microchip’s quality system for the design and manufacture of development systems is ISO 9001:2000 certified.

MCUs and dsPIC® DSCs, KEELOQ

code hopping

MCP47X6 PICtail™ PLUS DAUGHTER

BOARD USER’S GUIDE

Table of Contents

Preface ...........................................................................................................................5

Introduction............................................................................................................5

Document Layout .................................................................................................. 5

Conventions Used in this Guide............................................................................ 6

Recommended Reading.............................................................. .. ........................7

The Microchip Web Site........................................................................................ 7

Customer Support.................... .................................... .................. .......................7

Document Revision History................................................................................... 8

Chapter 1. Quick Start Instructions

1.1 Introduction .....................................................................................................9

1.2 Description of the MCP47X6 PICtail™ Plus Daughter Board ........................9

1.3 I2C Address B y te fo r E a ch D e v ice ............................................................... 11

1.4 Getting Started With the Explorer 16 Development Board ........................... 12

1.5 Connecti n g to the E xp l o re r 1 6 St a rt er Ki t ............... .. .................................... 13

1.6 Getting Started with PICkit™ Serial Analyzer .............................................. 20

1.7 Examples for Other Devices (MCP4706, MCP4716) ...................................30

1.8 Programming Example using the PICkit™ Serial Analyzer ..........................31

Appendix A. Schematic and Layouts

A.1 Introduction ..................................................................................................33

A.2 Board – Schematic ... .................................................................... ................ 3 4

A.3 Board – Top Silk and Pads ..........................................................................35

A.4 Board – Top Copper, Top Pads and Top Silk ................ .......................... .. ..36

A.5 Board – Bottom Silk and Pads ................ .......................... .. ........................37

A.6 Board – Bottom Copper, Bottom Pads and Silk .............................. .............38

Appendix B. Bill Of Materials (BOM)

Worldwide Sales and Service ....................................................................................40

MCP47X6 PICtail™ Plus Daughter Board User’s Guide

MCP47X6 PICtail™ PLUS DAUGHTER

BOARD USER’S GUIDE

Preface

NOTICE TO CUSTOMERS

All documentation becomes dated, and this manual is no exception. Microchip tools and documentation are constantly evolving to meet customer needs, so some actual dialogs and/or tool descriptions may differ from those in this document. Please refer to our web site (www.microchip.com) to obtain the latest documentation available.

Documents are identified with a “DS” number. This number is located on the bottom of each page, in front of the p age number. The numbering convention for the DS number is “DSXXXXXA”, where “XXXXX” is the document number and “A” is the revision level of the document.

For the most up-to-date information on development tools, see the MPLAB Select the Help menu, and then Topics to open a list of available online help files.

IDE online help.

INTRODUCTION

This chapter contains general information that will be useful to know before using the MCP47X6 PICtail™ Plus Daughter Board. Items discussed in this chapter include:

• Document Layout

• Conventions Used in this Guide

• Recommended Reading

• The Microchip Web Site

• Customer Support

• Document Revision History

DOCUMENT LAYOUT

This document describes how to use the MCP47X6 PICtail™ Plus Daughter Board as a development tool to emulate and debug firmware on a target board. The manual layout is as follows:

• Chapter 1. “Quick Start Instructions” – this chapter provides an overview of the MCP47X6 PICtail™ Plus Daughter Board and instructions on how to program the DAC register and EEPROM of the MCP4706/MCP4716/MCP4726 devices.

• Appendix A. “Schematic and Layouts” – shows the schematic and layout diagrams for the MCP47X6 PICtail™ Plus Daughter Board.

• Appendix B. “Bill Of Materials (BOM)” – lists the parts used to build the MCP47X6 PICtail™ Plus Daughter Board.

MCP47X6 PICtail™ Plus Daughter Board User’s Guide

CONVENTIONS USED IN THIS GUIDE

This manual uses the following docum entat io n conven tion s:

DOCUMENTATION CONVENTIONS

Description Represents Examples

Arial font:

Italic chara c ters Referenced books MPLAB

Emphasized text ...is the only compiler...

Initial caps A window the Output window

A dialog the Settings dialog A menu selection select Enable Programmer

Quotes A field name in a window or

dialog

Underlined, italic text with right angle bracket

Bold characters A dialog button Click OK

N‘Rnnnn A number in verilog format,

Text in angle brac kets < > A key on the keyboard Press <Enter>, <F1>

Courier New font:

Plain Courier New Sample source code #define START

Italic Courier New A variable argument file.o, where file can be

Square brackets [ ] Optional arguments mcc18 [options] file

Curly brackets and pipe character: { | }

Ellipses... Replaces r epeated text var_name [,

A menu path File>Save

A tab Click the Power tab

where N is the tota l number of digits, R is th e radi x and n is a digit.

Filenames autoexec.bat File paths c:\mcc18\h Keywords _asm, _endasm, static Command-line options -Opa+, -Opa- Bit values 0, 1 Constants 0xFF, ‘A’

Choice of mut ually exclus ive arguments; an OR selection

Represents code supplied by user

“Save project before build”

4‘b0010, 2‘hF1

any valid filename

[options] errorlevel {0|1}

var_name...] void main (void)

{ ... }

IDE User’s Guide

DOCUMENT REVISION HISTORY

Revision B (October 2011)

• Replaced the front and back views of the board with updated photos for Figure

1-1: “Front and Back Views of the MCP47X6 PICtail™ Plus Daughter Board.”

• Added buzzer information to Appendix B. “Bill Of Materials (BOM)”.

Revision A (May 201 1)

• Initial Release of this Document.

Chapter 1. Quick Start Instructions

1.1 INTRODUCTION

The following sections provide an overview of the MCP47X6 PICtail™ Plus Daughter Board and demonstrate how to: (a) use these devices in a 16-bit MCU environment and (b) evaluate these device’s features using the PICkit™ Serial Analyzer (P/N: DV164122). The MCP47X6 PICtail™ Plus Daughter Board is designed to work with both the Explorer 16 Development Board (P/N: DV164033) and the PICkit Analyzer (P/N: DV164122).

The following topics are covered:

• Description of the MCP47X6 PICtail™ Plus Daughter Board.

• How to use the MCP47X6 PICtail™ Plus Daughter Board with the Explorer 16 Starter Kit.

• How to use MCP47X6 PICtail™ Plus Daughter Board with the PICkit Analyzer.

MCP47X6 PICtail™ PLUS DAUGHTER

BOARD USER’S GUIDE

™

Serial

™

Serial

Note 1: If you use the PIC Explorer 16, you need Sections 1.4

™

2: If y ou us e th e PIC kit

Serial Analyzer, you need Sections 1.6 — 1.8 only.

— 1.5 only.

1.2 DESCRIPTION OF THE MCP47X6 PICtail™ PLUS DAUGHTER BOARD

The MCP47X6 PICtail™ Plus Daughter Board (P/N ADM00317) contains the MCP4706 (8-bit DAC), MCP4716 (10-bit DAC), and MCP4726 (12-bit DAC) devices. These DAC devices are communicating with the external Master device (MCU) using

C serial interface communication. The MCP47X6 PICtail™ Plus Daughter Board does not include the Master device (MCU), but it has two interface connectors that can be used for the external device, which has the Master device (MCU) to communicate with this board. The two interfaces are:

(a) Connector (J3) for Explorer 16 Starter Kit (P/N: DV164033) for 16-bit MCU environment. The firmware for the 16-bit MCU is provided with this board.

(b) 6-pin connector (J1) for PICkit™ Serial Analyzer (P/N: DV164122) for reading and writing the DAC registers using the PICkit™ Serial Analyzer PC software.

The user can connect the MCP47X6 PICtail™ Plus Daughter Board to one of the above tools and perform their own experiments.

These two external devices are used to control the DAC devices on the daughter board. The user can choose one of these tools to use along with the daughter board.

The MCP47X6 PICtail™ Plus Daughter Board has test points for SCL and SDA, and V

pads for each device. By connecting an oscilloscope to these test points (to SCL,

OUT

SDA, V communications through the I (V

OUT

) or a digital multimeter to the V

OUT

). Refer to Appendix A. “Schematic and Layouts”.

2C™

bus line and observe the resulting DAC output

pads, the user can examine the data

OUT

Note: The user can also control the DAC devices on the MCP47X6 PICtail™ Plus

Daughter Board by providing I communication terminals on the daughter board, without using the Explorer 16 Development Board or the PICkit

C commands through the interface

Serial Analyzer.

MCP47X6 PICtail™ Plus Daughter Board User’s Guide

Connector for PICkit

(a) Front View (b) Back View

Serial Analyzer

104-00317-R1

Connector for Explorer 16 Development Board

FIGURE 1-1: Front and Back Views of the MCP47X6 PICtail™ Plus Daughter Board.

Quick Start Instructions

TABLE 1-1: TERMINAL FUNCTION TABLE

Connector/Pin/Terminal Name Functions

J1 Connector Connector for PICkitTM Serial Analyzer.

Note: Do not use this pin when this b oard is us ed wi th the Explorer 16 Development Board .

J3 Connector Connector for Explorer 16 Development Board.

Note: Do not use this pin when this b oard is us ed wi th the

PICkit

Serial Analyzer.

External Reference Selection Jumper Pins

JP1 VDD connection through (a) J1 Connector for PICkitTM

JP2 Connecting

1 DAC output terminal f rom MCP4726 (12-bit DAC).

OUT

2 DAC output terminal f rom MCP4716 (10-bit DAC).

OUT

SDA Connected to I SCL Connected to I2CTM SCL line

3 DAC output terminal from MCP4706 (8-bit DAC).

OUT

REF_EXT

(a) Connect pin 2 to “V applied at the V (b) Connect pin 2 to “ externally. Note: This pin does not affect if VDD is selected a s reference internally by the configuration bit setting.

Serial Analyzer, or (b) J3 Connector for Explorer 16 Development Board.

Note: Do n ot connect thi s jumper if yo u don’t need au dible sounds.

(a) VDD monitoring terminal w hen JP 1 is co nnecte d (VDD is provided by the external tools). (b) VDD connection terminal when JP2 is disconnected. You can connec t your own

Ground Reference

External Reference connection terminal

OUT

2CTM

REF_EXT

1 (MCP4726 output) to Buzzer.

SDA line

” if external reference is

pin.

” if VDD is used as reference

to this pin.

VR1 Volume control for Buzzer 1.

Note: Disconnect JP2 if you don’t need audible sounds.

1.3 I2C ADDRESS BYTE FOR EACH DEVICE

Each DAC device on the board has its own I2C address bits which are preprogrammed at the factory. Table 1-2 shows the I

TABLE 1-2: I2C ADDRESS BYTE OF EACH DAC DEVICE

Device

MCP4726 (12-bit DAC)

MCP4716 (10-bit DAC)

MCP4726 (8-bit DAC)

where R/W

= 0 for write command and 1 for read command.

Address Byte (1st Byte):

Device Code + Address Bits (A2, A1, A0) + R/W

1100-000R/W

1100-001R/W 1100-0010 1100-0011

1100-010R/W

C address byte of each device.

I2C Address

Byte for Write

Command

(1st Byte)

1100-0000

1100-0100 1100-0101

I2C Address

Byte for Read

Command

(1st Byte)

1100-0001

MCP47X6 PICtail™ Plus Daughter Board User’s Guide

1.4 GETTING STARTED WITH THE EXPLORER 16 DEVELOPMENT BOARD

This section describes how to use the MCP47X6 PICtail™ Plus Daughter Board with the Explorer 16 Development Board.

After receiving the MCP47X6 PICtail™ Plus Daughter Board, program the 16-bit PIC24FJ128 MCU on the Explorer 16 Starter Kit using the firmware provided. The user can download the latest firmware from the Microchip website: www.microchip.com.

• Step 1: Insert the MCP47X6 PICtail™ Plus Daughter Board to the Explorer 16 Development Board. Figure 1-2 shows the configuration when the board is connected to the Explorer 16 Development Board.

• Step 2: Program the Explorer 16 Development Board using the firmware provided with this board. Figure 1-3 shows the connection of the MPLAB ICD2 with the Explorer 16 Development Board for programming.

• Step 3: Once the programming is done, disconnect the MPLAB ICD2 from the Explorer 16 Development Board.

• Step 4: Now you can evaluate the performance of the DAC devices. The LCD on the Explorer 16 Development Board will display instructions on how to select the DAC device using the push button switches on the Development Board: (a) S3 for MCP4726, (b) S6 for MCP4716, and (c) S5 for MCP4706. S4 is used to increment the DAC code. If you hold down the S4 switch, the DAC code will increase continuously until it reaches the maximum value, and then it starts from code 0 again. You can observe this event by simply connecting a voltmeter at the V pin while holding down the S4 switch.

All procedures are very intuitive and interactive using the Push button switches and by following the instructions on the LCD. The user can observe the DAC output (V changes using an oscilloscope or voltmeter by pressing the S4 switch. The firmware provided is an example that can be used as reference for the user’s applications.

OUT

)

+ 28 hidden pages

Microchip Technology MCP47X6 User guide

Specifications and Main Features

Frequently Asked Questions

User Manual

Trademarks

Preface

DOCUMENT REVISION HISTORY

Chapter 1. Quick Start Instructions

1.1 INTRODUCTION

1.2 DESCRIPTION OF THE MCP47X6 PICtail™ PLUS DAUGHTER BOARD

1.3 I2C ADDRESS BYTE FOR EACH DEVICE

1.4 GETTING STARTED WITH THE EXPLORER 16 DEVELOPMENT BOARD