Texas Instruments TMP461EVM Manuel utilisateur

TMP461EVM User’s Guide and Software

Tutorial

User's Guide

Literature Number: SBOU152A

July 2015–Revised September 2019

2SBOU152A–July 2015–Revised September 2019

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Contents

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

1 Overview............................................................................................................................. 6

1.1 TMP461EVM Kit Contents.................................................................................................. 6

1.2 Related Documentation From Texas Instruments....................................................................... 6

2 TMP461EVM Hardware Overview and Setup ........................................................................... 7

2.1 Board Connectors and Components ..................................................................................... 7

2.1.1 EVM Power Supply Input – J1 .................................................................................... 7

2.1.2 Pushbutton Switch – SW1......................................................................................... 8

2.1.3 LEDs – D3, D5, D6 ................................................................................................ 8

2.1.4 Remote BJT – Q1 .................................................................................................. 8

2.1.5 Address Jumpers – J3, J4......................................................................................... 8

2.2 Hardware Setup ............................................................................................................. 8

3 TMP461EVM Software Overview ............................................................................................ 9

3.1 TMP461EVM Software Installation ....................................................................................... 9

3.1.1 Running GUI Online ............................................................................................... 9

3.1.2 Running GUI on Desktop ........................................................................................ 11

3.2 Using the TMP461EVM Software ....................................................................................... 16

3.2.1 Launching and Running the Software ......................................................................... 16

3.2.2 Home Tab ......................................................................................................... 16

3.2.3 Quick Start Tab ................................................................................................... 17

3.2.4 Basic Settings Tab ............................................................................................... 20

3.2.5 Data Capture Tab ................................................................................................ 22

3.2.6 Register Tab ...................................................................................................... 24

3.2.7 Collateral ........................................................................................................... 25

4 TMP461EVM Documentation................................................................................................ 26

4.1 TMP461EVM Board Schematic .......................................................................................... 26

4.2 TMP461EVM Board Layout .............................................................................................. 27

4.3 TMP461 Test Board Bill of Materials ................................................................................... 30

Revision History.......................................................................................................................... 34

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SBOU152A–July 2015–Revised September 2019

List of Figures

1. TMP461EVM Hardware .................................................................................................... 5

2-1. TMP461EVM Board Top Side.............................................................................................. 7

2-2. Hardware Setup ............................................................................................................. 8

3-1. Gallery Home Page ......................................................................................................... 9

3-2. Cookies Agreement........................................................................................................ 10

3-3. TMP461EVM GUI Download From the Gallery ........................................................................ 11

3-4. GUI Composer Runtime Wizard ......................................................................................... 12

3-5. TMP461EVM GUI License Agreement.................................................................................. 13

3-6. GUI Composer Installation Directory .................................................................................... 14

3-7. Ready to Install............................................................................................................. 14

3-8. Installing GUI Composer Runtime ....................................................................................... 15

3-9. TMP461EVM Installation Finish.......................................................................................... 15

3-10. TMP461EVM Home Tab ................................................................................................. 16

3-11. TMP461EVM Quick Start Tab ........................................................................................... 17

3-12. Quick Start Connection Check ........................................................................................... 18

3-13. Quick Start Guide .......................................................................................................... 19

3-14. TMP461EVM Basic Settings Tab ....................................................................................... 20

3-15. TMP461EVM Data Capture Tab ......................................................................................... 22

3-16. Threshold Sliders........................................................................................................... 23

3-17. TMP461EVM Register Tab ............................................................................................... 24

3-18. TMP461EVM Collateral Tab ............................................................................................. 25

4-1. TMP461EVM Schematic .................................................................................................. 26

4-2. Top Assembly Layer....................................................................................................... 27

4-3. Top Routing Layer ......................................................................................................... 27

4-4. Ground Layer Routing .................................................................................................... 28

4-5. Power Layer Routing ...................................................................................................... 28

4-6. Bottom Layer Routing ..................................................................................................... 29

4-7. Bottom Assembly Layer .................................................................................................. 29

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List of Tables

1-1. Contents of the TMP461EVM Kit.......................................................................................... 6

1-2. Related Documentation..................................................................................................... 6

4-1. TMP461EVM Bill of Materials (BOM) ................................................................................... 30

SBOU152A–July 2015–Revised September 2019

TMP461EVM User’s Guide and Software Tutorial

Preface

SBOU152A–July 2015–Revised September 2019

TMP461EVM User’s Guide and Software Tutorial

This user's guide describes the characteristics, operation, and use of the TMP461EVM evaluation board. It

discusses how to set up and configure the software, reviews the hardware, and reviews various aspects of

the software operation. Throughout this document, the terms evaluation board, evaluation module, and

EVM are synonymous with the TMP461EVM. This user's guide also includes information regarding

operating procedures and input/output connections, an electrical schematic, PCB layout drawings, and a

parts list for the EVM.

Figure 1. TMP461EVM Hardware

SPACER

Trademarks

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Overview

Chapter 1

SBOU152A–July 2015–Revised September 2019

Overview

The TMP461 is a high-accuracy, low-power remote temperature sensor monitor with a built-in local

temperature sensor. The remote temperature sensors are typically low-cost discrete NPN or PNP

transistors, or on-die transistor or diode structures that are an integral part of microprocessors,

microcontrollers, or FPGAs. The temperature accuracy is ±1°C for the local and the remote temperature

sensors. The two-wire serial interface accepts SMBus communication protocol. The module and GUI are

designed to provide the user a quick setup to evaluate the system and register map with simply a few click

microcontroller, and remote BJT to be isolated and be connected to external systems.

1.1 TMP461EVM Kit Contents

Table 1-1 lists the contents of the TMP461EVM kit. Contact the nearest Texas Instruments Product

Information Center if any component is missing. TI highly recommends that engineers check the TI

website at http://www.ti.com to verify that they have the latest versions of the related software.

Table 1-1. Contents of the TMP461EVM Kit

ITEM QUANTITY

TMP461 PCB test board 1

Header, 100mil, 3x1, Gold, TH 2

USB cable extender 1

1.2 Related Documentation From Texas Instruments

The following document provides information on TI's integrated circuits used in the TMP461EVM. This

user's guide is available from the TI website under literature number SBOU152. Any letter appended to

the literature number corresponds to the document revision that is current at the time of the writing of this

document. Customers can either find the latest documentation on http://www.ti.com, or call the Texas

Instruments Literature Response Center at (800) 477-8924 or the Product Information Center at (972)

644-5580 for more information. When ordering, identify the document by both title and literature number.

Table 1-2. Related Documentation

DOCUMENT LITERATURE NUMBER

TMP461 product data sheet SBOS722

Breakouts

I2C Address

Headers

Jumpers for I2C headers

USB Connector (J1)

Remote BJT

TMP461

SBOU152A–July 2015–Revised September 2019

TMP461EVM Hardware Overview and Setup

Chapter 2

SBOU152A–July 2015–Revised September 2019

TMP461EVM Hardware Overview and Setup

This section describes the setup and some of the hardware features present on the TMP461EVM.

WARNING

Many of the components on the TMP461EVM are susceptible to

damage by electrostatic discharge (ESD). Customers are advised

to observe proper ESD handling precautions when unpacking and

handling the EVM, including the use of a grounded wrist strap at

an approved ESD workstation.

2.1 Board Connectors and Components

Figure 2-1 shows the top side of the TMP461EVM. Highlighted are the USB connector, breakouts, the

TMP461 device, and the remote BJT. The USB connector is directly plugged into the computer for power

and communication from the computer to the USB2ANY mircocontroller. The engineer can use the

perforated breakouts to break off certain sections of the EVM and connect them to external systems.

Headers can also be soldered to the vias to be used as test points. These vias are positioned 100 mils

apart to be compatible with a standard breadboard.

Figure 2-1. TMP461EVM Board Top Side

2.1.1 EVM Power Supply Input – J1

J1 is the USB connector to the PC. The interface is used to access the device’s registers and read the

conversion data from the TMP461 through I2C communication protocol. The TMP461EVM uses the +5-V

input power supply of the USB connector to power the EVM. The EVM does not require an external power

supply. The board is powered by the USB port and provides a switched +5 V.

Board Connectors and Components

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TMP461EVM Hardware Overview and Setup

2.1.2 Pushbutton Switch – SW1

The SW1 push button can bring the MSP430 into BSL mode and allow the user to upgrade the firmware

with the combination of the USB connector. Press and hold the switch SW1 next to the USB connector

while plugging the USB cable from the board to the PC to bring the MSP430 into BSL mode.

2.1.3 LEDs – D3, D5, D6

D3 is a green LED that can indicate when the EVM has power and can turn on after plugging in the board.

The D5 LED can indicate a THERM fault and will turn on when the device detects a THERM fault and

brings the pin LOW. D6 does the same function but for the ALERT/THERM2 pin. Both these LEDs are

red.

2.1.4 Remote BJT – Q1

Q1 is a MMBT3904LP NPN BJT. This is used as the remote temperature sensor on the EVM. The

MMBT3904LP typically has an N-factor of about 1.0042. The TMP461 assumes an N-Factor of 1.008,

which can cause a temperature error in the remote temperature reading. The GUI automatically sets the

N-Factor correction register to 1.0042 to compensate for this. If the device is reset, it will set the N-Factor

correction register back to the default value or 1.008 and a temperature error may be seen. If a remote

temperature error is seen, use the N-Factor correction feature to adjust the temperature reading. The

MMBT3904LP can also be broken off to allow the engineer to connect a different temperature remote to

the device.

2.1.5 Address Jumpers – J3, J4

J3 and J4 are used for setting the I2C address of the TMP461. J3 is used to set the A0 pin, and J4 is

used to set the A1 pin.

2.2 Hardware Setup

The TMP461EVM hardware consists of the USB2ANY Platform and the TMP461 altogether on one single

board. The unit is easily connected through a USB connector into the computer, as shown in Figure 2-2.

The green LED (D3) should turn on after the EVM is connected to the computer, confirming that the EVM

is powered. The engineer can either use the included jumpers to connect the middle pin to one of adjacent

headers to set the pin to either V+ or GND, or they can leave the pin floating for the desired I2C address.

Figure 2-2. Hardware Setup

SBOU152A–July 2015–Revised September 2019

TMP461EVM Software Overview

Chapter 3

SBOU152A–July 2015–Revised September 2019

TMP461EVM Software Overview

This section discusses how to install and use the TMP461EVM software.

3.1 TMP461EVM Software Installation

The EVM software listed here is tested on Microsoft Windows 7 and 10 operating systems (OS). The

software also functions on other Windows operating systems. The EVM software is available through the

EVM product folder on the TI website through the hyperlink. The hyperlink will redirect to the TI Cloud that

has a common repository of all published applications using the GUI Composer framework. The

applications can run directly from the Gallery with minimal install, but the engineers can download the

applications from the Gallery with Runtime to run the files on a desktop local machine. The application is

supported on many platforms (web, Windows, Linux, OSX), but Linux and OSX may require additional

drivers. To download the software to your system, follow the instructions below.

3.1.1 Running GUI Online

Go to the TMP461EVM web page on the TI website: http://www.ti.com/tool/TMP461EVM. Scroll down to

the “Software” section and click on the hyperlink to download the latest evaluation software, or connect

directly to the Gallery through this link: http://dev.ti.com/gallery/. This link may require login user account

privileges to use the online version as well as install applications. On the Gallery main page, type

'TMP461EVM' in the search bar as shown in the Figure 3-1 and press enter.

Figure 3-1. Gallery Home Page

Click on the TMP461EVM GUI icon. Users may be prompted to download and install the browser

extension for the Firefox or Chrome and TI Cloud Agent Application for the first time. Click on Agree and

Proceed. After this, the TMP461GUI should launch in your browser window.

TMP461EVM Software Installation

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TMP461EVM Software Overview

Figure 3-2. Cookies Agreement

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