Texas instruments Tmp116meter-evm User manual

SNOU160–April 2018

TMP116METER-EVM User's Guide

User's Guide

SNOU160–April 2018

TMP116METER-EVM User's Guide

The TMP116METER-EVM provides the user with an easy-to-read LCD screen while using the TMP116 for

measurement of ambient air temperature. The EVM measures 1.83 in × 1.45 in, so the system is fitted to

a small form factor for further convenience in space-constrained environments. The onboard

microcontroller (MCU) communicates with the temperature sensor using I2C communication protocol and

displays the measurement onto an LCD through SPI protocol.

Contents

1 Introduction ................................................................................................................... 1

2 Setup and Test Results..................................................................................................... 4

3 Schematic and Bill of Materials ............................................................................................ 6

List of Figures

1 TMP116METER-EVM Front View ........................................................................................ 2

2 TMP116METER-EVM Back View ......................................................................................... 2

3 Software Flow Chart ........................................................................................................ 5

4 System Current Consumption.............................................................................................. 6

5 TMP116METER-EVM Schematic ......................................................................................... 7

Trademarks

All trademarks are the property of their respective owners.

1 Introduction

The TMP116METER-EVM comes pre-loaded with firmware that ensures successful operation upon

connection of the coin cell battery. Because the MCU is flashed using JTAG protocol, the test, reset, and

ground pins are broken out to a three-pin header for the user to have the option to flash the

MSP430FR5969 MCU. The device features three push-buttons: Button S1 functions to perform RESET,

S2 switches the temperature display format on the display (Celsius or Fahrenheit), and another button

(S3) can be programmed by the user. Test points are provided for the user to probe the clock and data

signal lines corresponding to I2C data transfer in addition to power and ground probe locations.

Introduction

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Figure 1. TMP116METER-EVM Front View

Figure 2. TMP116METER-EVM Back View

1.1 Features

Low-power, high-accuracy temperature sensor: The TMP116 offers 16-bit resolution with an accuracy of

±0.2ºC (from -10ºC to +85ºC).

Ultra-low-power MCU: The MSP430FR5969 can operate from 1.8V to 3.6V while consuming 0.4 µA in

standby and 0.02 µA in shutdown.

Coin Cell Operation: CR2032 supplies 3V with a nominal capacity of 225 mAh

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Introduction

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TMP116METER-EVM User's Guide

1.1.1 TMP116 Temperature Sensor

The TMP116 sensor measures the ambient air temperature with high precision and low power

consumption. This device provides a 16-bit temperature result with a resolution of 0.0078°C without

calibration. The TMP116 units are 100% tested on a production setup that is NIST traceable and verified

with equipment calibrated to ISO and IEC 17025 accredited standards. The sensor comes in a WSON

(2.00 mm × 2.00 mm) package and consumes minimal current that, in addition to providing power savings,

minimizes self-heating and improves measurement accuracy. The TMP116 operates from 1.9 V to 5.5 V

and typically consumes 3.5 µA.

1.1.2 MSP430FR5969 Mixed-Signal Microcontroller

The MSP430FR5969 is an ultra-low-power MCU that is optimized for lowered energy budgets in end

equipment.

The device is a member of the MSP430FR59xx family of ultra-low-power mixed-signal MCUs featuring

generous FRAM capabilities to enhance low-power designs in addition to intelligent peripherals to allow for

varied application implementation. Updating FRAM takes 100× less time than DRAM, and there is no pre-

erase required. In addition, FRAM includes faster write speeds, unified memory, and low-energy writes.

Unified memory refers to program, data, and storage registers in one single place, which expedites the

software run. Because of its fast write speeds, FRAM has near infinite endurance. In a remote sensor,

data could be written more often for improved data accuracy, or it could collect data for longer. Due to the

lack of a charge pump, FRAM enables lower average and peak power during writes. FRAM is also

nonvolatile (that is, retains its contents upon power loss). Using the MSP430 MCU with FRAM allows for

on-the-fly writes, as opposed to buffered in RAM. The bitwise programmable memory can be used at the

programmer’s convenience for data or program storage. FRAM also offers advantages in security and is

inherently more secure due to its makeup. Also, de-layering is not effective. In comparison to MCUs with

flash, FRAM:

• Is very easy to use

• Requires no setup or preparation such as unlocking of control registers

• Is not segmented and each bit is individually erasable, writable, and addressable

• Does not require an erase before a write

• Allows low-power write accesses (does not require a charge pump)

• Can be written to across the full voltage range (1.8 V to 3.6 V)

• Can be written to at speeds close to 8MBps (maximum flash write speed including the erase time is

approximately 14 kBps)

• Does not require additional power to write to FRAM when compared to reading from FRAM

1.2 Applications

The primary application of this EVM is to showcase a low power solution for temperature monitoring by

utilizing low power-consumption devices.

A battery voltage monitoring system allows the user to implement in firmware. A potential divider serves to

feed an ADC-enabled GPIO of the MSP430 MCU. That way, voltage sags intrinsic to battery operation

over time can be monitored and optionally displayed along with temperature measurement results;

however, this requires firmware modification. VCCMonitor is calculated as follows:

(1)

Select R4 and R5 to provide appropriate drive current to the ADC. In addition, the system features a

reverse polarity protection FET applied to the battery terminals. This FET acts as a load switch in the

system. Looking at the schematic, the body diode of Q1 sits connected between the drain and source of

Q1. The anode is connected to the drain, while the cathode is connected to the gate. When the battery is

connected correctly, the body diode is forward biased and conducts current from the drain to the source.

Because Q1 is a P-channel MOSFET, the gate voltage is brought below the source voltage, providing the

correct turnon condition. When the battery is connected in reverse, the gate of Q1 is receiving a voltage

above the source voltage. Therefore, Q1 does not turn on and current is not passed to the load through

conduction of the body diode.

Setup and Test Results

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2 Setup and Test Results

2.1 Hardware

CAUTION

The TMP116METER-EVM requires a Panasonic CR2032 coin cell battery

which is not included.

NOTE: The TMP116METER-EVM requires a Panasonic CR2032 coin cell battery which is not included.

The TMP116METER-EVM includes:

• MSP430FR5969 MCU

• Three push-button switches

• TMP116 temperature sensor

• LSO13B7DH03 LCD

• 32-kHz FC-135 32.7680KA-A3 crystal

• Associated discrete components

• For a comprehensive list of all parts, see the Bill of Materials (BOM).

2.2 Software

This TMP116METER-EVM ships pre-loaded with software for its MSP430FR5969 MCU. When the battery

is loaded, the display shows a Texas Instruments splash screen and then proceeds to display the current

temperature and humidity. The rest of this section details the operation of the software.

Included with this reference design is a software package that contains a Code Composer Studio (CCS)

project designed for the MSP430FR5969 mCU. For proper evaluation, import the CCS project into CCS

v7.3 or later with TI Compiler v16.9.4.LTS or later.

After reset or power-on, several hardware initializations take place. All GPIO pins are configured as

outputs and driven to logic low to save power. The pins that are used are then reconfigured for their

intended purpose. The MSP430 MCU’s internal oscillator, known as DCO, is configured for 8 MHz and

connected to the internal signals SMCLK and MCLK. The external 32-kHz real-time crystal (RTC) is

connected to the low-frequency clock inputs (LFXT), so the LFXT is configured as the source of the

internal signal ACLK (Aux Clock). TIMER A is configured as a counter with ACLK as source. Conveniently,

a count of 32768 (215) is equivalent to 1 second, a count of 16384 (214) is equivalent to a half second,

and so on. The eUSCI B0 peripheral is configured for I2C communication with the TMP116 device. Finally,

the eUSCI A1 peripheral is configured for SPI use with the display, and the Sharp display is initialized.

The next step in the software is to begin the loop.

On each iteration, the MSP430 MCU begins by checking the state of the button S1 and setting the Celsius

and Fahrenheit variable. An I2C Write transaction is then performed to instruct the TMP116 to begin a

temperature measurement. This measurement takes a few milliseconds (for conversion time, see

TMP116x High-Accuracy, Low-Power, Digital Temperature Sensor With SMBus- and I2C-Compatible

Interface ), so the MSP430 MCU is configured for LPM4 during the down time. After TIMER A interrupts

and resumes, the temperature data is retrieved from the TMP116. The values for temperature are

converted to characters using the tmp-decode.c library. This library is designed to provide string

conversion without loss of 16-bit precision, but it can be adjusted for less precision. Finally, the

temperature string updates the display and the MSP430 MCU returns to LPM4 for 2 seconds before

looping.

Reset / Power Up

Toggle Celsius/

Fahrenheit

Check

button

Setup MCU pins, clocks,

Timer A, I2C

Initialize Graphics Library

(GRLIB) and Sharp Display

Pressed

Trigger

Measurement

Sleep (LPM4) during

measurement

Retrieve

Temperature Result

Update Screen

Sleep (LPM4) for

2 seconds

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Setup and Test Results

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TMP116METER-EVM User's Guide

2.3 Programming

The TMP116 meter can be flashed or debugged using the Spy-By-Wire (SBW) interface. The

MSP430FR5969’s SBW interface is available at header J1 pins TEST and RST. Connect these pins, and

GND/VCC as appropriate, to an MSP430 or a standalone debugger such as MSP-FET. For more

information, see MSP Debuggers .

Figure 3. Software Flow Chart

2.3.1 System Current Consumption

Although the current consumption of the system in its inactive mode is clearly defined by summing each

inactive mode current specification in device data sheets, it is not so clear when the devices are active.

Therefore, this test is set up to measure the current consumption of the system in active mode. The

measurement is taken using a small series resistor connected to a simple instrumentation amplifier to

perform a differential measurement across the resistor. This arrangement is used because the standard

probes of an oscilloscope can only take single-ended measurements.

The below image yields the current consumption of the system while it is in its active mode.

Schematic and Bill of Materials

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Figure 4. System Current Consumption

Because the gain of the instrumentation amplifier is programmed to 1000, the 1.65-V measurement

highlighted by cursor B corresponds to 1.02 mA consumed by the system. The transactions taking place

during the system’s active mode cycle are:

• MSP430 MCU wakes up due to interrupt by Timer A.

• MSP430 MCU communicates with the TMP116 through I2C.

• MSP430 MCU decodes information provided by TMP116.

• MSP430 MCU communicates with the LCD through SPI to update the display.

These transactions are reflected in the oscilloscope capture whenever the voltage signal steps up. After

these transactions take place, the MSP430 MCU returns to standby mode (LPM4), the TMP116 sensor

returns to sleep mode, and the LCD returns to its low power consumption mode. During the active mode

transactions, the system consumes between 0.2 mA to 1.02 mA. Because the active mode cycle is

occurring about every 2 seconds, this active mode occurs 1800 times per hour. The active mode

transactions each take about 100 ms to perform, so for 6.65% of an hour, the system is in active mode.

The blue arrow indicates the system current consumption in LPM4 (shutdown). Shutdown current

consumption includes the MSP430 MCU, TMP116, and LCD in shutdown modes. A typical system

shutdown current consumption is about 130 µA. The below equation yields an estimate for the expected

battery life of the CR2032:

(2)

3 Schematic and Bill of Materials

To download the full design package, see the TI Design Guide.

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Schematic and Bill of Materials

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3.1 Schematic

Figure 5. TMP116METER-EVM Schematic

Schematic and Bill of Materials

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3.2 Bill of Materials

Designator Qty Value Description Package Reference Part Number Manufacturer

!PCB1 1 Printed Circuit Board SENS021 Any

BT1 1 Battery Holder for CR2032, SMT Battery Holder for

CR2032, SMT BK-912 Memory Protection

Devices

C1 1 0.1uF CAP, CERM, 0.1 uF, 16 V, +/- 10%, X5R,

0201 0201 GRM033R61C104KE84D MuRata

C2, C4, C7 3 0.1uF CAP, CERM, 0.1 uF, 10 V, +/- 10%, X5R,

0402 0402 GRM155R61A104KA01D MuRata

C3, C5 2 1uF CAP, CERM, 1 uF, 6.3 V, +/- 10%, X5R, 0402 0402 GRM155R60J105KE19D MuRata

C6 1 2200pF CAP, CERM, 2200 pF, 6.3 V, +/- 10%, X5R,

0402 0402 GRM155R60J222KA01D MuRata

C9, C10 2 12pF CAP, CERM, 12 pF, 50 V, +/- 5%, C0G/NP0,

0201 0201 GRM0335C1H120JA01D MuRata

DS1 1 LCD Display Dot Pixels 128x128 LCD Display Dot Pixels

128x128 LS013B7DH03 Sharp Microelectronics

H1, H2, H3, H4 4 Bumpon, Cylindrical, 0.312 X 0.200, Black Black Bumpon SJ61A1 3M

J2 1 Connector, FPC 10 Pos. 9.1x2.0x5.6 mm Connector PFC,

9.1x2.0x5.6mm FH12-10S-0.5SH(55) Hirose Electric Co. Ltd.

Q1 1 -20V MOSFET, P-CH, -20 V, -3.7 A, SOT-23 SOT-23 SI2323DS Vishay-Siliconix

R1, R2 2 10k RES, 10 k, 5%, 0.063 W, 0402 0402 CRCW040210K0JNED Vishay-Dale

R3 1 33k RES, 33 k, 5%, 0.063 W, 0402 0402 CRCW040233K0JNED Vishay-Dale

RST, S1, S2 3 Switch, SPST-NO, 1 Pos, 0.05A, 12VDC, SMD 7.8x3.5mm TL3330AF260QG E-Switch

TP1, TP2, TP3, TP4 4 Natural PC Test Point Brass, SMT Natural PC Test Point

Brass, SMT S2761-46R Harwin

U1 1 High-Accuracy, Low-Power, Digital

Temperature Sensor with SMBus and Two-

Wire Serial Interface, DRV0006A (WSON-6)

DRV0006A TMP116AIDRVR Texas Instruments

U2 1 MSP430FR5969 16 MHz Ultra-Low-Power

Microcontroller featuring 64 KB FRAM, 2 KB

SRAM, 40 IO, RGZ0048B (VQFN-48)

RGZ0048B MSP430FR5969IRGZR Texas Instruments

Y1 1 CRYSTAL, 32.768KHz, 12.5PF, SMD 3.2x0.9x1.5mm ABS07-32.768KHZ-T Abracon Corporation

C8 0 0.1uF CAP, CERM, 0.1 uF, 10 V, +/- 10%, X5R,

0402 0402 GRM155R61A104KA01D MuRata

J1 0 Header, 2.54 mm, 4x1, Gold, TH Header, 2.54 mm, 4x1,

TH PBC04SAAN Sullins Connector

Solutions

R4, R5 0 2.00Meg RES, 2.00 M, 1%, 0.063 W, 0402 0402 CRCW04022M00FKED Vishay-Dale

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Schematic and Bill of Materials

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Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265

STANDARD TERMS FOR EVALUATION MODULES

1. Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, and/or

documentation which may be provided together or separately (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance

with the terms set forth herein. User's acceptance of the EVM is expressly subject to the following terms.

1.1 EVMs are intended solely for product or software developers for use in a research and development setting to facilitate feasibility

evaluation, experimentation, or scientific analysis of TI semiconductors products. EVMs have no direct function and are not

finished products. EVMs shall not be directly or indirectly assembled as a part or subassembly in any finished product. For

clarification, any software or software tools provided with the EVM (“Software”) shall not be subject to the terms and conditions

set forth herein but rather shall be subject to the applicable terms that accompany such Software

1.2 EVMs are not intended for consumer or household use. EVMs may not be sold, sublicensed, leased, rented, loaned, assigned,

or otherwise distributed for commercial purposes by Users, in whole or in part, or used in any finished product or production

system.

2Limited Warranty and Related Remedies/Disclaimers:

2.1 These terms do not apply to Software. The warranty, if any, for Software is covered in the applicable Software License

Agreement.

2.2 TI warrants that the TI EVM will conform to TI's published specifications for ninety (90) days after the date TI delivers such EVM

to User. Notwithstanding the foregoing, TI shall not be liable for a nonconforming EVM if (a) the nonconformity was caused by

neglect, misuse or mistreatment by an entity other than TI, including improper installation or testing, or for any EVMs that have

been altered or modified in any way by an entity other than TI, (b) the nonconformity resulted from User's design, specifications

or instructions for such EVMs or improper system design, or (c) User has not paid on time. Testing and other quality control

techniques are used to the extent TI deems necessary. TI does not test all parameters of each EVM.

User's claims against TI under this Section 2 are void if User fails to notify TI of any apparent defects in the EVMs within ten (10)

business days after delivery, or of any hidden defects with ten (10) business days after the defect has been detected.

2.3 TI's sole liability shall be at its option to repair or replace EVMs that fail to conform to the warranty set forth above, or credit

User's account for such EVM. TI's liability under this warranty shall be limited to EVMs that are returned during the warranty

period to the address designated by TI and that are determined by TI not to conform to such warranty. If TI elects to repair or

replace such EVM, TI shall have a reasonable time to repair such EVM or provide replacements. Repaired EVMs shall be

warranted for the remainder of the original warranty period. Replaced EVMs shall be warranted for a new full ninety (90) day

warranty period.

3Regulatory Notices:

3.1 United States

3.1.1 Notice applicable to EVMs not FCC-Approved:

FCC NOTICE: This kit is designed to allow product developers to evaluate electronic components, circuitry, or software

associated with the kit to determine whether to incorporate such items in a finished product and software developers to write

software applications for use with the end product. This kit is not a finished product and when assembled may not be resold or

otherwise marketed unless all required FCC equipment authorizations are first obtained. Operation is subject to the condition

that this product not cause harmful interference to licensed radio stations and that this product accept harmful interference.

Unless the assembled kit is designed to operate under part 15, part 18 or part 95 of this chapter, the operator of the kit must

operate under the authority of an FCC license holder or must secure an experimental authorization under part 5 of this chapter.

3.1.2 For EVMs annotated as FCC – FEDERAL COMMUNICATIONS COMMISSION Part 15 Compliant:

CAUTION

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not

cause harmful interference, and (2) this device must accept any interference received, including interference that may cause

undesired operation.

Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to

operate the equipment.

FCC Interference Statement for Class A EVM devices

NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of

the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is

operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not

installed and used in accordance with the instruction manual, may cause harmful interference to radio communications.

Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to

correct the interference at his own expense.

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. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance

with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference

will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which

can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more

of the following measures:

•Reorient or relocate the receiving antenna.

•Increase the separation between the equipment and receiver.

•Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

•Consult the dealer or an experienced radio/TV technician for help.

3.2 Canada

3.2.1 For EVMs issued with an Industry Canada Certificate of Conformance to RSS-210 or RSS-247

Concerning EVMs Including Radio Transmitters:

This device complies with Industry Canada license-exempt RSSs. Operation is subject to the following two conditions:

(1) this device may not cause interference, and (2) this device must accept any interference, including interference that may

cause undesired operation of the device.

Concernant les EVMs avec appareils radio:

Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation

est autorisée aux deux conditions suivantes: (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit

accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.

Concerning EVMs Including Detachable Antennas:

Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser)

gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type

and its gain should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for

successful communication. This radio transmitter has been approved by Industry Canada to operate with the antenna types

listed in the user guide with the maximum permissible gain and required antenna impedance for each antenna type indicated.

Antenna types not included in this list, having a gain greater than the maximum gain indicated for that type, are strictly prohibited

for use with this device.

Concernant les EVMs avec antennes détachables

Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et

d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage

radioélectrique à l'intention des autres utilisateurs, il faut choisir le type d'antenne et son gain de sorte que la puissance isotrope

rayonnée équivalente (p.i.r.e.) ne dépasse pas l'intensité nécessaire à l'établissement d'une communication satisfaisante. Le

présent émetteur radio a été approuvé par Industrie Canada pour fonctionner avec les types d'antenne énumérés dans le

manuel d’usage et ayant un gain admissible maximal et l'impédance requise pour chaque type d'antenne. Les types d'antenne

non inclus dans cette liste, ou dont le gain est supérieur au gain maximal indiqué, sont strictement interdits pour l'exploitation de

l'émetteur

3.3 Japan

3.3.1 Notice for EVMs delivered in Japan: Please see http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_01.page 日本国内に

輸入される評価用キット、ボードについては、次のところをご覧ください。

http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_01.page

3.3.2 Notice for Users of EVMs Considered “Radio Frequency Products” in Japan: EVMs entering Japan may not be certified

by TI as conforming to Technical Regulations of Radio Law of Japan.

If User uses EVMs in Japan, not certified to Technical Regulations of Radio Law of Japan, User is required to follow the

instructions set forth by Radio Law of Japan, which includes, but is not limited to, the instructions below with respect to EVMs

(which for the avoidance of doubt are stated strictly for convenience and should be verified by User):

1. Use EVMs in a shielded room or any other test facility as defined in the notification #173 issued by Ministry of Internal

Affairs and Communications on March 28, 2006, based on Sub-section 1.1 of Article 6 of the Ministry’s Rule for

Enforcement of Radio Law of Japan,

2. Use EVMs only after User obtains the license of Test Radio Station as provided in Radio Law of Japan with respect to

EVMs, or

3. Use of EVMs only after User obtains the Technical Regulations Conformity Certification as provided in Radio Law of Japan

with respect to EVMs. Also, do not transfer EVMs, unless User gives the same notice above to the transferee. Please note

that if User does not follow the instructions above, User will be subject to penalties of Radio Law of Japan.

【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

3.4 European Union

3.4.1 For EVMs subject to EU Directive 2014/30/EU (Electromagnetic Compatibility Directive):

This is a class A product intended for use in environments other than domestic environments that are connected to a

low-voltage power-supply network that supplies buildings used for domestic purposes. In a domestic environment this

product may cause radio interference in which case the user may be required to take adequate measures.

4EVM 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.

4.2 User must read and apply the user guide and other available documentation provided by TI regarding the EVM prior to handling

or using the EVM, including without limitation any warning or restriction notices. The notices contain important safety information

related to, for example, temperatures and voltages.

4.3 Safety-Related Warnings and Restrictions:

4.3.1 User shall operate the EVM within TI’s recommended specifications and environmental considerations stated in the user

guide, other available documentation provided by TI, and any other applicable requirements and employ reasonable and

customary safeguards. Exceeding the specified performance ratings and specifications (including but not limited to input

and output voltage, current, power, and environmental ranges) for the EVM may cause personal injury or death, or

property damage. If there are questions concerning performance ratings and specifications, User should contact a TI

field representative prior to connecting interface electronics including input power and intended loads. Any loads applied

outside of the specified output range may also result in unintended and/or inaccurate operation and/or possible

permanent damage to the EVM and/or interface electronics. Please consult the EVM user guide prior to connecting any

load to the EVM output. If there is uncertainty as to the load specification, please contact a TI field representative.

During normal operation, even with the inputs and outputs kept within the specified allowable ranges, some circuit

components may have elevated case temperatures. These components include but are not limited to linear regulators,

switching transistors, pass transistors, current sense resistors, and heat sinks, which can be identified using the

information in the associated documentation. When working with the EVM, please be aware that the EVM may become

very warm.

4.3.2 EVMs are intended solely for use by technically qualified, professional electronics experts who are familiar with the

dangers and application risks associated with handling electrical mechanical components, systems, and subsystems.

User assumes all responsibility and liability for proper and safe handling and use of the EVM by User or its employees,

affiliates, contractors or designees. User assumes all responsibility and liability to ensure that any interfaces (electronic

and/or mechanical) between the EVM and any human body are designed with suitable isolation and means to safely

limit accessible leakage currents to minimize the risk of electrical shock hazard. User assumes all responsibility and

liability for any improper or unsafe handling or use of the EVM by User or its employees, affiliates, contractors or

designees.

4.4 User assumes all responsibility and liability to determine whether the EVM is subject to any applicable international, federal,

state, or local laws and regulations related to User’s handling and use of the EVM and, if applicable, User assumes all

responsibility and liability for compliance in all respects with such laws and regulations. User assumes all responsibility and

liability for proper disposal and recycling of the EVM consistent with all applicable international, federal, state, and local

requirements.

5. Accuracy of Information: To the extent TI provides information on the availability and function of EVMs, TI attempts to be as accurate

as possible. However, TI does not warrant the accuracy of EVM descriptions, EVM availability or other information on its websites as

accurate, complete, reliable, current, or error-free.

6. Disclaimers:

6.1 EXCEPT AS SET FORTH ABOVE, EVMS AND ANY MATERIALS PROVIDED WITH THE EVM (INCLUDING, BUT NOT

LIMITED TO, REFERENCE DESIGNS AND THE DESIGN OF THE EVM ITSELF) ARE PROVIDED "AS IS" AND "WITH ALL

FAULTS." TI DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, REGARDING SUCH ITEMS, INCLUDING BUT

NOT LIMITED TO ANY EPIDEMIC FAILURE WARRANTY OR IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS

FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF ANY THIRD PARTY PATENTS, COPYRIGHTS, TRADE

SECRETS OR OTHER INTELLECTUAL PROPERTY RIGHTS.

6.2 EXCEPT FOR THE LIMITED RIGHT TO USE THE EVM SET FORTH HEREIN, NOTHING IN THESE TERMS SHALL BE

CONSTRUED AS GRANTING OR CONFERRING ANY RIGHTS BY LICENSE, PATENT, OR ANY OTHER INDUSTRIAL OR

INTELLECTUAL PROPERTY RIGHT OF TI, ITS SUPPLIERS/LICENSORS OR ANY OTHER THIRD PARTY, TO USE THE

EVM IN ANY FINISHED END-USER OR READY-TO-USE FINAL PRODUCT, OR FOR ANY INVENTION, DISCOVERY OR

IMPROVEMENT, REGARDLESS OF WHEN MADE, CONCEIVED OR ACQUIRED.

7. USER'S INDEMNITY OBLIGATIONS AND REPRESENTATIONS. USER WILL DEFEND, INDEMNIFY AND HOLD TI, ITS

LICENSORS AND THEIR REPRESENTATIVES HARMLESS FROM AND AGAINST ANY AND ALL CLAIMS, DAMAGES, LOSSES,

EXPENSES, COSTS AND LIABILITIES (COLLECTIVELY, "CLAIMS") ARISING OUT OF OR IN CONNECTION WITH ANY

HANDLING OR USE OF THE EVM THAT IS NOT IN ACCORDANCE WITH THESE TERMS. THIS OBLIGATION SHALL APPLY

WHETHER CLAIMS ARISE UNDER STATUTE, REGULATION, OR THE LAW OF TORT, CONTRACT OR ANY OTHER LEGAL

THEORY, AND EVEN IF THE EVM FAILS TO PERFORM AS DESCRIBED OR EXPECTED.

8. Limitations on Damages and Liability:

8.1 General Limitations. IN NO EVENT SHALL TI BE LIABLE FOR ANY SPECIAL, COLLATERAL, INDIRECT, PUNITIVE,

INCIDENTAL, CONSEQUENTIAL, OR EXEMPLARY DAMAGES IN CONNECTION WITH OR ARISING OUT OF THESE

TERMS OR THE USE OF THE EVMS , REGARDLESS OF WHETHER TI HAS BEEN ADVISED OF THE POSSIBILITY OF

SUCH DAMAGES. EXCLUDED DAMAGES INCLUDE, BUT ARE NOT LIMITED TO, COST OF REMOVAL OR

REINSTALLATION, ANCILLARY COSTS TO THE PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, RETESTING,

OUTSIDE COMPUTER TIME, LABOR COSTS, LOSS OF GOODWILL, LOSS OF PROFITS, LOSS OF SAVINGS, LOSS OF

USE, LOSS OF DATA, OR BUSINESS INTERRUPTION. NO CLAIM, SUIT OR ACTION SHALL BE BROUGHT AGAINST TI

MORE THAN TWELVE (12) MONTHS AFTER THE EVENT THAT GAVE RISE TO THE CAUSE OF ACTION HAS

OCCURRED.

8.2 Specific Limitations. IN NO EVENT SHALL TI'S AGGREGATE LIABILITY FROM ANY USE OF AN EVM PROVIDED

HEREUNDER, INCLUDING FROM ANY WARRANTY, INDEMITY OR OTHER OBLIGATION ARISING OUT OF OR IN

CONNECTION WITH THESE TERMS, , EXCEED THE TOTAL AMOUNT PAID TO TI BY USER FOR THE PARTICULAR

EVM(S) AT ISSUE DURING THE PRIOR TWELVE (12) MONTHS WITH RESPECT TO WHICH LOSSES OR DAMAGES ARE

CLAIMED. THE EXISTENCE OF MORE THAN ONE CLAIM SHALL NOT ENLARGE OR EXTEND THIS LIMIT.

9. Return Policy. Except as otherwise provided, TI does not offer any refunds, returns, or exchanges. Furthermore, no return of EVM(s)

will be accepted if the package has been opened and no return of the EVM(s) will be accepted if they are damaged or otherwise not in

a resalable condition. If User feels it has been incorrectly charged for the EVM(s) it ordered or that delivery violates the applicable

order, User should contact TI. All refunds will be made in full within thirty (30) working days from the return of the components(s),

excluding any postage or packaging costs.

10. Governing Law: These terms and conditions shall be governed by and interpreted in accordance with the laws of the State of Texas,

without reference to conflict-of-laws principles. User agrees that non-exclusive jurisdiction for any dispute arising out of or relating to

these terms and conditions lies within courts located in the State of Texas and consents to venue in Dallas County, Texas.

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