Microchip Technology MCP47X6 User guide

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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

)

Quick Start Instructions

1.5 CONNECTING TO THE EXPLORER 16 STARTER KIT

1. Connect the MCP47X6 PICtail™ Plus Daughter Board to the J5 socket on the Explorer 16 Development Board as shown in Figure 1-2.

MCP47x6 PICtail Plus Daughter Board

S3: Select MCP4726

S6: Select MCP4716

S5: Select MCP4706

S4: Increment DAC Code

Explorer 16 Development Board (P/N DV164033)

FIGURE 1-2: Connecting the MCP47X6 PICtail™ Plus Daughter Board to the Explorer 16 Development Board.

1.5.1 Programming the PIC24FJ128 MCU

The Explorer 16 Development Board contains the PIC24FJ128 MCU. The user can download the firmware to the MCU using the MPLAB ICD2 (or ICD3) programmer.

1.5.1.1 THE PIC24FJ128 MCU FIRMWARE FOR THE MCP47X6 PICtail™ PLUS

DAUGHTER BOARD

The original firmware for the Explorer 16 Development Board is modified for the MCP47X6 PICtail™ Plus Daughter Board demonstration. The firmware uses most of the original code for the Explorer 16 Development Board except the I control routines for the PIC24FJ128 MCU.

The following four routines are added or modified from the original Explorer 16 Development Board firmware:

• PIC24ExplDemo_MCP4726_Main.c

• MCP47x6_I2C_Func.c

• Banner_MCP4726_MCP4716_MCP4706.c

• I2C_MCP4726.h

The source codes are compiled by using Microchip’s C30 Compiler and the hex code is programmed to the MCU using the MPLAB ICD 2. Figure 1-3 shows the connection between the MPLAB ICD 2 and the Explorer 16 Development Board. Figure 1-4 shows the MPLAB IDE programming environment.

C peripheral

MCP47X6 PICtail™ Plus Daughter Board User’s Guide

1.5.1.2 FIRMWARE FLOW CHART FOR THE MCP47X6 PICtail™ PLUS DAUGHTER BOARD

Figure 1-5 shows the flow chart of the firmware. Once the MCU firmware is programmed, the LCD will display instructions (with repeats) for the next steps. The firmware us es fo u r push b ut t on sw i t ch es on th e Exp lorer 16 Development Boar d. Th e features of the switches are:

• S3: Selecting MCP4726 (12-bit DAC). MCP4726 Output is available at V

• S6: Selecting MCP4716 (10-bit DAC). MCP4716 Output is available at V

• S5: Selecting MCP4706 (8-bit DAC). MCP4706 Output is available at V

• S4: Incrementing the DAC code using a write command (writing both DAC register

and EEPROM). The DAC output can be monitored at the V Figure 1-6 for the V

waveform.

OUT

terminal. See

OUT

The Buzzer is connected to the MCP4726 output through JP2. Please disconnect JP2 if you don’t need audible sounds.

The firmware is interactive with push button switches. Table 1-3 shows the details of the switches that are used.

The user can switch to other devices by using the device selection push button switches (S3, S6 and S5) any time. The DAC output can be updated with the S4. The DAC’s configuration bit settings that are used in the firmware are:

• Gain = 1x, Reference = Internal V

OUT OUT

OUT

1 2

TABLE 1-3: SWITCHES FOR THE FIRMWARE CONTROL

Switch to

Device

MCP4726 (12 bit DAC)

MCP4716 (10 bit DAC)

MCP4726 (8 bit DAC)

Device Selection

Switch

S6 V

S5 V

1.5.1.3 DAC OUTPUT (V

OUT

increment the

DAC Input

Code

)

Output

Terminal

OUT

Configuration Bit

Settings

Gain = 1x,

= V

REF

The MCP47X6 PICtail™ Plus Daughter Board has three DAC output terminals for each DAC device.

•V

The user can observe the DAC outputs at the V voltmeter or an oscilloscope. Figure 1-7 shows the I

1: Output from the MCP4726 (12-bit DAC)

OUT

2: Output from the MCP4716 (10-bit DAC)

OUT

3: Output from the MCP4706 (8-bit DAC)

OUT

test terminals using a digital

OUT

C clock (SCL) and data (SDA)

signals, and DAC output waveform.

Note: The DAC code is also programmed in EEPROM. The DAC devices on the

MCP47x6 Daughter Board will hold the latest settings when the power supply is removed. When power supply is back on again (Example: Remove the board from the Explorer 16 Development Board and connect again), the same DAC output voltage with the previous settings will be immediately available at the DAC output terminal.

Quick Start Instructions

1.5.1.4 AUDIBLE BUZZER The MCP47X6 PICtail™ Plus Daughter Board includes a buzzer. This buzzer is directly

connected to the V by disconnecting JP2. The buzzer volume also can be adjusted by VR1.

of the MCP4726 (12-bit DAC). The user can disable the buzzer

OUT

Explorer 16 Development Board

(P/N DV164033)

FIGURE 1-3: MPLAB ICD2 Connection to Explorer 16 Development Board with the MCP47X6 PICtail™ Plus Daughter Board for Programming.

MCP47x6 PICtail Plus

Daughter Board (P/N ADM00317)

MCP47X6 PICtail™ Plus Daughter Board User’s Guide

FIGURE 1-4: MPLAB IDE Programming Environment.

Quick Start Instructions

POWER-UP

LCD Display Instructions

Is Any Device Selected?

(S3: MCP4726, S6: MCP4716, S5: MCP4706)

(D9: MCP4726, D7: MCP4716, D3: MCP4706)

START

Turn on LED D3

YES

Turn on LED

Is S4 Pressed?

YES

Send I2C Write Command for DAC Register and EEPROM

DAC Code = DAC Code + 1 LSB

Configuration Register Settings: V

DAC Code = FSR?

YES

Reset DAC Code to 0x00h

Is Any Device Selected?

(S3: MCP4726, S6: MCP4716, S5: MCP4706)

YES

Turn on LED

(D9: MCP4726, D7: MCP4716, D3: MCP4706)

= Internal VDD, Gain = 1x

REF

FIGURE 1-5: Flow Chart for the MCP47X6 PICtail™ Plus Daughter Board Firmware.

MCP47X6 PICtail™ Plus Daughter Board User’s Guide

Clock Signal (SCL)

Data Signal (SDA)

(a) Write command to write DAC Input Register and EEPROM

Clock Signal (SCL)

Data Signal (SDA)

DAC Code = 0111 -1110-0011 = 7E3(h) = 2019 (decimal)

Expected DAC Output

------------------------- -

REF

4096

•

5 2019

•

-------------------- 2.465V=== 4096

(b) Fast Write Command DAC Code = 0110-1101-1001 = 6F9 (hex) = 1753 (decimal)

•

Expected DAC Output

FIGURE 1-6: I2C Write Command Waveforms for the MCP4726, with V

----------------------- 4096

•

5 1753

-------------------- 2.1398V=== 4096

= VDD and Gain = 1x.

REF

I2C Clock Signal (SCL)

C Data Signal (SDA)

Quick Start Instructions

OUT

at V

OUT

: Zoomed-in section for SCL and SDA signals.

Write Data (Dn) = 1111 - 01101111 (binary)

OUT

FIGURE 1-7: I2C SCL, SDA, and V Code by 1 LSB. The Fast Write Command is Used for this Example.

------------------------ 4.823V==

•

4096

Waveforms for the MCP4726 While Incrementing the DAC

OUT

for V

= 5V

MCP47X6 PICtail™ Plus Daughter Board User’s Guide

1.6 GETTING STARTED WITH PICKIT™ SERIAL ANALYZER

The user can connect the MCP47X6 PICtail™ Plus Daughter Board to the PICkit™ Serial Analyzer by setting them up as shown in Figure 1-8.

The following describes how to use them together:

1. Connect the MCP47X6 PICtail™ Plus Daughter Board’s J2 pin socket to the PICkit™ Serial Analyzer.

2. Connect a digital voltmeter to V

-V

1 for MCP4726

OUT

2 for MCP4716

OUT

3 for MCP4706

OUT

test terminals and VSS:

OUT

MCP47x6 PICtail Plus Daughter Board

DAC analog Output (V

PICkit Serial Analyzer

USB Cable: Connected between the PICkit Serial Analyzer and Personal Computer.

FIGURE 1-8: MCP47X6 PICtail™ Plus Daughter Board with the PICkit™ Serial Analyzer.

OUT

)

Quick Start Instructions

1.6.1 PICkit™ Serial Analyzer PC Soft ware Set-Up for the MCP47x6

Daughter Board

The following steps describe how to set up and use the PICkit™ Serial Analyzer PC Graphic User Interface (GUI) to evaluate the MCP47X6 PICtail™ Plus Daughter Board.

1. Install the PICkit™ Serial Analyzer software onto your personal computer (PC).

2. Connect the USB cable between the PICkit™ Serial Analyzer and your PC.

3. Run the PICkit™ Serial PC Software. It will open up the graphic user interface

(GUI) as shown. Click the Next button and follow the instruct ions .

4. Select the Communication Mode type: I

C Master, and click the Next button.

MCP47X6 PICtail™ Plus Daughter Board User’s Guide

5. Select either 100 kHz or 400 kHz, and click the Next button.

Note: The MCP47x6 devices support the I2C bus data rate up to 3.4 MHz, but the

current version of the PICkit™ Serial Analyzer supports the I rate up to 400 kHz only.

6. Select No

Note: The MCP47X6 PICtail™ Plus Daughter Board has its own pull-up resistors,

on Enable Pull-ups, and click the Next button.

therefore, you don’t need additional pull-up resistors from the PICkit™ Serial Analyzer.

C bus data

Quick Start Instructions

7. Select the VDD voltage of the MCP47X6 PICtail™ Plus Daughter Board and click

the

Next button.

Case 1: When you use VDD from the PICkit™ Serial Analyzer

If you choose PICkit™ Serial will power my device and 5 Volts as shown below, the MCP47X6 PICtail™ Plus Daughter Board is powered by the 5V DC (range between 4.85V ~ 5V) from the PICkit™ Serial Analyzer through the JP1 jumper. In this case, make sure that the JP1 jumper on the MCP47X6 PICtail™ Plus Daughter Board is connected.

Case 2: When you use your own V

Y ou can also provide your own VDD voltage by applying a VDD voltage at the VDD terminal. In this case, make sure that the JP1 jumper is disconnected.

MCP47X6 PICtail™ Plus Daughter Board User’s Guide

8. Click the OK button. You have made all of the PICkit™ Serial Analyzer Configuration set-ups. You are now ready to program the MCP47X6 PICtail™ Plus Daughter Board using the PICkit™ Serial Analyzer.

Quick Start Instructions

1.6.2 Creating Script Files

In order to create a communication between the PICkit™ Serial Analyzer and the MCP47X6 PICtail™ Plus Daughter Board, a script file is needed. The following procedure shows how to create script files and how to use them.

Select Communication -----> Script ---> Script Builder.

Note: The MCP47X6 scripts are in a text file on the MCP47X6 PICtailTM Plus

Daughter Board’s product web page. The scripts can be copied into the

PICkit

serial’s CommScripts.txt file.

MCP47X6 PICtail™ Plus Daughter Board User’s Guide

1.6.2.1 CREATING SCRIPT FILES TO PROGRAM DAC REGISTER AND

EEPROM

1. Click on WriteBlockAddrA8 in “Example I2C Scripts” column. This will fill in the spaces under Script Detail column.

Modifying the Script Details Parameters:

2. Under the Script Detail column, select the item in the parameter box.

3. Right click the mouse button and an option box appears to the right of your selection. This gives you the options that are available for the parameter selected. Select the desired option.

4. Keep the parameters in the same order as shown below.

The following example shows how to create a script file for a Write command (DAC register and EEPROM) for the MCP4726.

1. Choose these boxes and right click the mouse button for options available.

2. You can also change the values or delete the boxes.

3. Make sure the listed parameters in th e “Script Detail” should be in the exact order as shown here.

4. Change the parameter value. Script Detail

I2CSTART I2CWRTBYT 04 C0 60

FF F0

I2CSTOP

Note: All the 8 parameters above must be listed in order. The parameters with * are not

modifiable. Address bits for the MCP4726 is (A2,A1,A0) = (0,0,0). You can choose any data bit you want in the 3rd and 4th bytes. If you use the above write data, the MCP4726 device will output:

-----> This means there are four bytes to send

-----> 1st Write Byte: Address byte = 1100-0000

-----> 2nd Write Byte:1100-0000 (Command + Config.)

-----> 3rd Write Byte: 1111-1111 (Data Byte)

-----> 3rd Write Byte: 1111-0000 (Data Nibble +Don’t care Nibble) *

FFF(hex)(V)

⋅

OUT

-------------------------------------------------VDDV()== 4096

1st Write Byte

2nd Write Byte

3rd Write Byte

4th Write Byte

Quick Start Instructions

1.6.2.2 SAVING THE SCRIPT FILE AND PROGRAMMING DAC REGISTER (WRITING BOTH DAC REGISTER AND EEPROM)

1. Change the 3rd and 4th data bytes, if desired, in the Script Detail column.

2. Type in any script name (i.e., MCP4726_WriteEE) in the space below the Script

Name menu.

3. Click Save Script button.

4. Click Execute Script button.

Note: At this point, the PICkit™ Serial transmits a write command of “Write DAC

Register and EEPROM” to the MCP4726 device (address = 000). The saved file name will appear in Users I2C Scripts column and can be reused at any time by selecting the file name.

5. The analog output voltage of the MCP4726 will be monitored at V

on the Daughter Board.

Note: When you click on the “Execute Script” menu, the “Busy” LED on the PICkit

Serial Analyzer will momentarily turn on and then turn off. If the LED remains ON, a communications problem has occurred. Remove the PICkit Serial Analyzer from the personal computer and recheck the parameter value in the order of the parameters under the Script Detail column. Try again until the “Busy” LED goes OFF after executing the write command.

1 terminal

OUT

MCP47X6 PICtail™ Plus Daughter Board User’s Guide

1.6.2.3 CREATING A SCRIPT FILE TO PROGRAM THE DAC REGISTER WITH FAST MODE COMMAND

1. Get a new script file by selecting the WriteAddrA8 from the “Example I2C

Scripts” column.

2. Modify the Script Detail column as shown bel ow:

Script Detail

I2CWRTBYT I2CSTART

03 C0 0F FF

I2CSTOP

3. Type in the script name (i.e., MCP4726_WriteF) in the space below the Script

Name menu.

4. Click the Execute Script button.

-------> This means Master will send three bytes

-------> 1st Write Byte: Address byte = 1100-0000

-------> 2nd Write Byte: 0000-FFFF (Data Byte)

-------> 3rd Write Byte: FFFF-FFFF (Data Nibble + Don’t care Nibble)

VDDDn

Now the device will output V

OUT

⋅

----------------------4096

⋅

5V 800 hex()

---------------------------------- 2 . 5 V== = 4096

3 Bytes to Send

1st Write Byte

2nd Write Byte

3rd Write Byte

Quick Start Instructions

1.6.3 Verifying the EEPROM Data

One of the important features of the MCP4706 devices is the nonvolatile memory. When the device is first powered up, it outputs an analog voltage corresponding to the data in the EEPROM. The user can confirm this feature using the following procedures:

1. Program the EEPROM memory. Refer to Section 1.6.2.1 “Creating Script

Files to Program DAC Register and EEPROM”.

2. Remove power (V remove the daughter board from the PICkit™ Serial Analyzer.

3. Reconnect power (V to the PICkit™ Serial Analyzer.

4. You can confirm that the programmed DAC output at the DAC output terminal (V

1, V

OUT

1.6.4 Reading both the DAC Register and EEPROM data:

You can read back the DAC code stored in the DAC register and EEPROM with the following steps:

1. Create a read command script file name as shown below and execute it.

2. The results (DAC code and EEPROM data) will appear on the PICkit™ Serial Transactions page.

) from the MCP47X6 PICtail™ Plus Daughter Board, or

) to the Daughter Board or reconnect the Daughter Board

2, V

3) by using a digital voltmeter.

OUT

MCP47X6 PICtail™ Plus Daughter Board User’s Guide

Requesting

6 Bytes

Written Data

using a Write Command

Reading Data

using a Read Command

EEPROM Data (Configuration bits + DAC Code)

DAC Register Data (Configuration bits + DAC Code)

1.7 EXAMPLES FOR OTHER DEVICES (MCP4706, MCP4716)

The examples shown in the previous sections use the I2C address bits of the MCP4726 (A2, A1, A0 = 0,0,0). The same procedure is also applicable for the remaining two devices (MCP4706, MCP4716) by simply using the right address byte for each device. Table 1-2 shows the address byte of each device. Refer to the MCP4706/MCP4716/MCP4726 Data Sheet for the data format of each command.

Quick Start Instructions

1.8 PROGRAMMING EXAMPLE USING THE PICKIT™ SERIAL ANALYZER

The following example shows how to set DAC code for the desired DAC output voltage using the Fast Write command.

See the MCP4706/MCP4716/MCP4726 Data sheet for more details on the data formats for each device.

1 1 0 0 A2 A1 A0 R/W

(A2, A1, A0) = (0,0,0) for MCP4726

Device Code

Address Bits

FIGURE 1-9: MCP47x6 Device Address Byte.

Targeted DAC Output = INL x Dn = 2.5V

INL = V

(a) MCP4726

Start 00xC0 0 PD1 PD0 D11 D10 D9 D8 D7 D5D6 D4 D3 D1D2 D0 STOP ACK ACK

Address Byte: when (A2 A1 A0) = 000

REF

ACK

/2N = 5V/2N

= 5V/4096 = 1.2207 mV for 12-bit DAC (MCP4726)

= 5V/1024 = 4.8828 mV for 10-bit DAC (MCP4716)

= 5V/256 = 19.53125mV for 8-bit DAC (MCP4706)

2.5V

-----------

== ==

INL

(1 0 0 0 0 0 0 0 0 0 0 0)

2.5V

------------------------- 2048 2

1.2207mV

0x08h

* Factory Programmed Address Bits:

= (0,0,1) for MCP4716 = (0,1,0) for MCP4706

0x00h

(b) MCP4716

2.5V

== ==

-----------

INL

Start 00xC2 0 PD1 PD0 D9 D8 D7 D6 D5 D4 D2D3 D1 D0

ACK

(1 0 0 0 0 0 0 0 0 0 0 0)

2.5V

-------------------------5122

4.8828mV

0x08h

Address Byte:

when (A2 A1A0) = 001

2.5V

== ==

-----------

INL

Start 00xC4 0 PD1 PD0 X X X X D7 D6 D4D5 D3 D2

ACK

( 0 0 0 0)

2.5V

-------------------------------1282

19.53125mV

(1 0 0 0 0 0 0 0 )

0x00h

Address Byte: when (A2 A1A0) = 010

FIGURE 1-10: Fast Mode Write Command for Targeted V

OUT

0x00h

0x80h = 2

= 2.5V when V

REF

= 5V.

STOPACK ACK

MCP47X6 PICtail™ Plus Daughter Board User’s Guide

NOTES:

Appendix A. Schematic and Layouts

A.1 INTRODUCTION

This appendix contains the following schematics and layouts for the MCP47x6 PICtail™ Plus Daughter Board:

• Board – Schematic

• Board – Top Silk and Pads

• Board – Top Copper, Top Pads and Top Silk

• Board – Bottom Silk and Pads

• Board – Bottom Copper, Bottom Pads and Silk

MCP47X6 PICtail™ PLUS DAUGHTER

BOARD USER’S GUIDE

MCP47X6 PICtail™ Plus Daughter Board User’s Guide

A.2 BOARD – SCHEMATIC

A.3 BOARD – TOP SILK AND PADS

Schematic and Layouts

MCP47X6 PICtail™ Plus Daughter Board User’s Guide

A.4 BOARD – TOP COPPER, TOP PADS AND TOP SILK

A.5 BOARD – BOTTOM SILK AND PADS

Schematic and Layouts

MCP47X6 PICtail™ Plus Daughter Board User’s Guide

A.6 BOARD – BOTTOM COPPER, BOTTOM PADS AND SILK

MCP47X6 PICtail™ PLUS DAUGHTER

BOARD USER’S GUIDE

Appendix B. Bill Of Materials (BOM)

TABLE B-1: BILL OF MATERIALS (BOM)

Qty Reference Description Manufacturer Part Number

7 C1, C3, C4,

C5, C6, C7, C8 1 C2 CAP 1.0UF 16V CERAMIC X5R 0603 Panasonic - ECG ECJ-1VB1C105K 1 J1 CONN HEADER 6 POS. 100 R/A TIN Molex/Waldom Electronics

1 JMP1 CONN HEADER 3 POS. 100" STR

3JMP1, JP1,

JP2 2 JP1, JP2 CONN HEADER 2 POS. 100 VERT

1 PCB RoHS Compliant Bare PCB,

1 R1 RES 100 OHM 1/10W 1% 0603 SMD Panasonic - ECG ERJ-3EKF1000V 2 R2, R3 RES 10.0K OHM 1/10W 1% 0603

2 R4, R5 RES 10 OHM 1/10W 5% 0603 SMD Panasonic - ECG ERJ-3GEYJ100V 1 U2 8-/10-/12-Bit Voltage Output

1 U3 8-/10-/12-Bit Voltage Output

1 U4 8-/10-/12-Bit Voltage Output

10 Vout1,Vout2,

Vout3, VSS,

EXT, VSS,

SDA, SCL,

VSS, AVDD 1 VR1 POT 5.0K OHM THUMBWHEEL

1 SP1 BUZZER PIEZO 3kHz 24mm PIC MT Mallory Sonalert Products, Inc. PK-21N30PQ

Note 1: The components listed in t his Bill of Materi als are repr esent ativ e of the PCB asse mbly. The released BOM

used in manufacturing uses all RoHS-compliant components.

CAP.1UF 16V CERAMIC X7R 0603 Panasonic - ECG ECJ-1VB1C104K

22-05-2061

Corp Molex/Waldom Electronics

TIN SHUNT LP W/HANDLE 2 POS. 30AU

*Bag shunts with kit*

TIN

MCP4726, MCP4716 MCP4706

PICtail

SMD

Digital-to-Analog Conv erte r with EEPROM

PC TEST POINT COMPACT SMT Keystone Electronics 5016

CERM ST

Plus Daughter Board

Corp Tyco Electronics/Amp 881545-2

Molex/Waldom Electronics 22-03-2021

- 104-00317

Panasonic - ECG ERJ-3EKF1002V

Microchip Technology Inc. MCP4706A2T-E/MA

Microchip Technology Inc. MCP4716A1T-E/MA

Microchip Technology Inc. MCP4726A0T-E/MA

Bourns Inc. 3352T-1-502

90120-0123

Worldwide Sales and Service

AMERICAS

Corporate Office

2355 West Chandler Blvd. Chandler, AZ 85224-6199 Tel: 480-792-7200 Fax: 480-792-7277 Technical Support:

http://www.microchip.com/ support

Web Address:

www.microchip.com

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Duluth, GA Tel: 678-957-9614 Fax: 678-957-1455

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Cleveland

Independence, OH Tel: 216-447-0464 Fax: 216-447-0643

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Farmington Hills, MI Tel: 248-538-2250 Fax: 248-538-2260

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ASIA/PACIFIC

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Tel: 61-2-9868-6733 Fax: 61-2-9868-6755

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Tel: 86-10-8569-7000 Fax: 86-10-8528-2104

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Tel: 86-28-8665-5511 Fax: 86-28-8665-7889

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Tel: 86-23-8980-9588 Fax: 86-23-8980-9500

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Tel: 86-571-2819-3187 Fax: 86-571-2819-3189

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Tel: 852-2401-1200 Fax: 852-2401-3431

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Tel: 86-25-8473-2460 Fax: 86-25-8473-2470

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Tel: 86-532-8502-7355 Fax: 86-532-8502-7205

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Tel: 86-21-5407-5533 Fax: 86-21-5407-5066

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Tel: 86-24-2334-2829 Fax: 86-24-2334-2393

China - Shenzhen

Tel: 86-755-8203-2660 Fax: 86-755-8203-1760

China - Wuhan

Tel: 86-27-5980-5300 Fax: 86-27-5980-5118

China - Xian

Tel: 86-29-8833-7252 Fax: 86-29-8833-7256

China - Xiamen

Tel: 86-592-2388138 Fax: 86-592-2388130

China - Zhuhai

Tel: 86-756-3210040 Fax: 86-756-3210049

ASIA/PACIFIC

India - Bangalore

Tel: 91-80-3090-4444 Fax: 91-80-3090-4123

India - New Delhi

Tel: 91-11-4160-8631 Fax: 91-11-4160-8632

India - Pune

Tel: 91-20-2566-1512 Fax: 91-20-2566-1513

Japan - Yokohama

Tel: 81-45-471- 6166 Fax: 81-45-471-6122

Korea - Daegu

Tel: 82-53-744-4301 Fax: 82-53-744-4302

Korea - Seoul

Tel: 82-2-554-7200 Fax: 82-2-558-5932 or 82-2-558-5934

Malaysia - Kuala Lumpur

Tel: 60-3-6201-9857 Fax: 60-3-6201-9859

Malaysia - Penang

Tel: 60-4-227-8870 Fax: 60-4-227-4068

Philippines - Manila

Tel: 63-2-634-9065 Fax: 63-2-634-9069

Singapore

Tel: 65-6334-8870 Fax: 65-6334-8850

Tai wan - Hsin Chu

Tel: 886-3-5778-366 Fax: 886-3-5770-955

Taiwan - Kaohsiung

Tel: 886-7-536-4818 Fax: 886-7-330-9305

Taiwan - Taipei

Tel: 886-2-2500-6610 Fax: 886-2-2508-0102

Thailand - Bangkok

Tel: 66-2-694-1351 Fax: 66-2-694-1350

EUROPE

Austria - Wels

Tel: 43-7242-2244-39 Fax: 43-7242-2244-393

Denmark - Copenhagen

Tel: 45-4450-2828 Fax: 45-4485-2829

France - Paris

Tel: 33-1-69-53-63-20 Fax: 33-1-69-30-90-79

Germany - Munich

Tel: 49-89-627-144-0 Fax: 49-89-627-144-44

Italy - Milan

Tel: 39-0331-742611 Fax: 39-0331-466781

Netherlands - Drunen

Tel: 31-416-690399 Fax: 31-416-690340

Spain - Madrid

Tel: 34-91-708-08-90 Fax: 34-91-708-08-91

UK - Wokingham

Tel: 44-118-921-5869 Fax: 44-118-921-5820

08/02/11

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

1.5 CONNECTING TO THE EXPLORER 16 STARTER KIT

1.5.1 Programming the PIC24FJ128 MCU

1.6 GETTING STARTED WITH PICKIT™ SERIAL ANALYZER

1.6.2 Creating Script Files

1.6.3 Verifying the EEPROM Data

1.6.4 Reading both the DAC Register and EEPROM data:

1.7 EXAMPLES FOR OTHER DEVICES (MCP4706, MCP4716)

1.8 PROGRAMMING EXAMPLE USING THE PICKIT™ SERIAL ANALYZER

Appendix A. Schematic and Layouts

A.1 INTRODUCTION

A.2 BOARD – SCHEMATIC

A.3 BOARD – TOP SILK AND PADS

A.4 BOARD – TOP COPPER, TOP PADS AND TOP SILK

A.5 BOARD – BOTTOM SILK AND PADS

A.6 BOARD – BOTTOM COPPER, BOTTOM PADS AND SILK

Appendix B. Bill Of Materials (BOM)

Worldwide Sales and Service

Corporate Office

Atlanta

Boston

Chicago

Cleveland

Dallas

Detroit

Indianapolis

Toronto

Australia - Sydney

China - Beijing

China - Shanghai

India - Bangalore

Korea - Daegu

Korea - Seoul

Singapore

Taiwan - Taipei

Denmark - Copenhagen

France - Paris

Germany - Munich

Italy - Milan

Spain - Madrid

UK - Wokingham