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Texas Instruments TMP461 User Manual
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Texas Instruments TMP461 User Manual

Texas Instruments TMP461 User Manual

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TMP461EVM User's Guide and Software
Tutorial
User's Guide
Literature Number: SBOU152
July 2015

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Summary of Contents for Texas Instruments TMP461

  • Page 1 TMP461EVM User’s Guide and Software Tutorial User's Guide Literature Number: SBOU152 July 2015...
  • Page 2 TMP461EVM Kit Contents ................ Related Documentation from Texas Instruments ....................TMP461EVM Hardware Setup ................. Theory of Operation for the TMP461 Hardware .............. Signal Definitions of H1 (10-Pin Male Connector Socket) ................Theory of Operation for the USB-DIG Platform ..................TMP461EVM Hardware Overview ....................
  • Page 3 5-4. I2C Address Tab ....................5-5. Temperature Limits Tab ................... 5-6. TMP461 Configuration Registers Tab ................. 5-7. TMP461 Channel Enable Register Tab ..................5-8. Reading the Temperature Gauge ..................6-1. TMP461EVM Board Schematic ..................6-2. TMP461EVM Components Layout SBOU152 – July 2015...
  • Page 4 TMP461 Slave Address Options ..................5-1. Conversion Rate Register Codes ..................5-2. n-Factor Correction Register Codes ................6-1. TMP461EVM Test Board Bill of Materials List of Tables SBOU152 – July 2015 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
  • Page 5 (PCB) layout drawings, and a parts list for the EVM. Windows, Windows 7, WinZIP are registered trademarks of Microsoft Corporation. All other trademarks are the property of their respective owners. SBOU152 – July 2015 TMP461EVM User’s Guide and Software Tutorial Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
  • Page 6 SBOU152 – July 2015 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, substrate thermal transistors, or diodes that are integral parts of microprocessors, microcontrollers, or field-programmable gate arrays (FPGAs).
  • Page 7 Related Documentation from Texas Instruments www.ti.com Figure 1-1. Hardware Included with TMP461EVM Kit SBOU152 – July 2015 Overview Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
  • Page 8 SM-USB-DIG TMP461EVM Figure 2-1. TMP461EVM Hardware Setup Theory of Operation for the TMP461 Hardware The TMP461EVM only requires the two-wire I C lines (SDA and SCLK) and VDUT and GND to supply a constant 3.3 V and power return, as shown in Figure 2-2.
  • Page 9 TMP461EVM and the SM-DIG. Note that the TMP461EVM only uses the necessary I C communication lines (pins 1 and 3) and the VDUT and GND (pin 6 and 8) pins to issue commands to the TMP461 sensors. Table 2-1. Pin Connector...
  • Page 10 This pop-up indicates that the device is ready to be used. The SM-USB-DIG platform uses the human interface device drivers that are part of the Microsoft Windows operating system. ® Figure 3-1. Connecting the SM-USB-DIG Platform TMP461EVM Hardware Overview SBOU152 – July 2015 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
  • Page 11 C Translator and Test Points One of the features of the TMP461 is the ability of the device to be powered at 1.8 V when the communication is still at 3.3 V. The TMP461EVM is equipped with an on-board I...
  • Page 12 The slave address byte consists of seven address bits and a direction bit indicating the intent of executing a read or write operation. The TMP461 allows up to nine devices to be connected to the SMBus depending on the A0, A1 pin connections, as shown in Table 3-1.
  • Page 13 TMP461EVM Features www.ti.com Figure 3-5. Slave Address Connections (A0, A1) SBOU152 – July 2015 TMP461EVM Hardware Overview Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
  • Page 14 TMP461EVM folder (for example, C:\TMP461\TMP461EVM) on your hard drive. When the files are extracted, navigate to the TMP461EVM folder you created on your hard drive. Locate the setup.exe file and execute it to start the installation. The TMP461 software installer then begins the installation process, as shown in Figure 4-1.
  • Page 15 Following this option, two license agreements are presented that must be accepted, as shown in Figure 4- 2. After accepting the Texas Instruments and National Instruments license agreements, the progress bar opens and shows the installation of the software. When the installation process is completed, click Finish.
  • Page 16 Starting the TMP461EVM Software The TMP461EVM software can be operated through the Start menu in Windows. From the Start menu, select All Programs, highlight the TMP461 folder, and then select the TMP461EVM program. Figure 5-1 shows how the software appears if the TMP461EVM is functioning properly.
  • Page 17 Make sure that the device is recognized when the USB cable is plugged in, as indicated by a Windows- generated confirmation sound. Figure 5-2. Communication Error with the USB DIG Platform SBOU152 – July 2015 TMP461EVM Software Overview Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
  • Page 18 4C (hex). The user must ensure that the A0 and A1 jumpers are floating when starting the program for the first time. If all devices are communicating correctly, the user should be able to see temperature change over time in the TMP461 local temperature box. Figure 5-3. TMP461 Read Continuously TMP461EVM Software Overview SBOU152 –...
  • Page 19 The first tab on the TMP461EVM software is the I2C Address tab, as shown in Figure 5-4. In this tab, the slave address can be set for the TMP461. Select the slave address needed and make sure A0 and A1 are connected according on the TMP461EVM hardware board. Figure 5-4. I2C Address Tab SBOU152 –...
  • Page 20 The second tab on the TMP461EVM software is the Temperature Limits tab. In this tab, the ALERT and THERM limits can be read or set for the TMP461. You can also set a temperature offset for the remote temperature sensor and enable a THERM hysteresis. Changing values in these controls automatically writes them.
  • Page 21 TMP461 data sheet for more information. The status register reports the state of the temperature ADC, the temperature limit comparators, and the connection to the remote sensor. The status register is read- only and is read by accessing pointer address 02h; see the TMP461 data sheet for status register bit descriptions.
  • Page 22 0.25 0.25 0.125 0.0625 (default) 0.03125 5.2.6 n-Factor Correction Tab The TMP461 allows for a different n-factor value for converting remote channel measurements to temperature. Table 5-2 shows the n-factor correction register codes. Table 5-2. n-Factor Correction Register Codes Binary...
  • Page 23 REN is set to 0 the remote temperature conversion is disabled. Figure 5-7 shows the Channel Enable Register tab in the TMP461EVM software; see the TMP461 data sheet for more information. Figure 5-7. TMP461 Channel Enable Register Tab SBOU152 – July 2015 TMP461EVM Software Overview Submit Documentation Feedback Copyright ©...
  • Page 24 Using the TMP461EVM Software www.ti.com 5.2.8 Reading the Temperature Gauge The temperature box on the TMP461EVM software displays the measured values of the TMP461 device local temperature and external temperature registers in a graphical format, as shown in Figure 5-8. These values are displayed in Celsius.
  • Page 25 User’s Guide (SBOU098), available at the TI website at www.ti.com. TMP461EVM Board Schematic Figure 6-1 shows the schematic for the TMP461EVM board. Figure 6-1. TMP461EVM Board Schematic SBOU152 – July 2015 TMP461EVM Documentation Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
  • Page 26 TMP461EVM PCB Components Layout www.ti.com TMP461EVM PCB Components Layout Figure 6-2 shows the layout of the components for the TMP461EVM board. Figure 6-2. TMP461EVM Components Layout TMP461EVM Documentation SBOU152 – July 2015 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated...
  • Page 27 TMP461 Test Board Bill of Materials www.ti.com TMP461 Test Board Bill of Materials Table 6-1 lists the bill of materials for the TMP461EVM test board. Table 6-1. TMP461EVM Test Board Bill of Materials Item No. Designator Value Description Package Reference...
  • Page 28 STANDARD TERMS AND CONDITIONS FOR EVALUATION MODULES Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, or documentation (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance with the terms and conditions set forth herein. Acceptance of the EVM is expressly subject to the following terms and conditions.
  • Page 29 FCC Interference Statement for Class B EVM devices NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
  • Page 30 【無線電波を送信する製品の開発キットをお使いになる際の注意事項】 開発キットの中には技術基準適合証明を受けて いないものがあります。 技術適合証明を受けていないもののご使用に際しては、電波法遵守のため、以下のいずれかの 措置を取っていただく必要がありますのでご注意ください。 1. 電波法施行規則第6条第1項第1号に基づく平成18年3月28日総務省告示第173号で定められた電波暗室等の試験設備でご使用 いただく。 2. 実験局の免許を取得後ご使用いただく。 3. 技術基準適合証明を取得後ご使用いただく。 なお、本製品は、上記の「ご使用にあたっての注意」を譲渡先、移転先に通知しない限り、譲渡、移転できないものとします。 上記を遵守頂けない場合は、電波法の罰則が適用される可能性があることをご留意ください。 日本テキサス・イ ンスツルメンツ株式会社 東京都新宿区西新宿６丁目２４番１号 西新宿三井ビル 3.3.3 Notice for EVMs for Power Line Communication: Please see http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page 電力線搬送波通信についての開発キットをお使いになる際の注意事項については、次のところをご覧くださ い。http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page SPACER EVM Use Restrictions and Warnings: 4.1 EVMS ARE NOT FOR USE IN FUNCTIONAL SAFETY AND/OR SAFETY CRITICAL EVALUATIONS, INCLUDING BUT NOT LIMITED TO EVALUATIONS OF LIFE SUPPORT APPLICATIONS.
  • Page 31 Notwithstanding the foregoing, any judgment may be enforced in any United States or foreign court, and TI may seek injunctive relief in any United States or foreign court. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2015, Texas Instruments Incorporated...
  • Page 32 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue.
  • Page 33 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Texas Instruments TMP461EVM...

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