Texas Instruments DRV8833C User manual

User's Guide
SLVUAD4–November 2014
DRV8833C Evaluation Module
This document is provided with the DRV8833C customer evaluation module (EVM) as a supplement to the
DRV8833C datasheet (SLVSCP9). The user's guide details the hardware implementation of the EVM.
Throughout this user's guide, the abbreviation EVM and the term evaluation module are synonymous with
the DRV8833CEVM, unless noted otherwise.
Contents
1 PCB View..................................................................................................................... 2
2 Introduction to the EVM..................................................................................................... 3
2.1 Connectors .......................................................................................................... 3
2.2 Test Points........................................................................................................... 4
2.3 Jumpers and Buttons............................................................................................... 4
2.4 Operating the EVM ................................................................................................. 5
3 Schematic..................................................................................................................... 6
4 EVM Bill of Materials (BOM) ............................................................................................... 7
List of Figures
1 Top 3-D View................................................................................................................. 2
2 Bottom 3-D View............................................................................................................. 2
3 Connectors ................................................................................................................... 3
4 Speed Curve of the DRV8833C ........................................................................................... 5
5 EVM Schematic.............................................................................................................. 6
List of Tables
1 Bill of Materials............................................................................................................... 7
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PCB View www.ti.com
1 PCB View
Figure 1 and Figure 2 illustrate the 3-D view of the DRV8833C EVM. The size of the EVM is 76.2 mm ×
50.8 mm.
Figure 1. Top 3-D View
Figure 2. Bottom 3-D View
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www.ti.com Introduction to the EVM
2 Introduction to the EVM
The DRV8833CEVM is a complete solution for evaluating the DRV8833C stepper controller. It includes an
MSP430G2553 MCU and the firmware necessary to control the DRV8833C. Power is provided externally,
up to 10.8 V.
The Spy-Bi-Wire interface (J2) is provided to allow evaluation of user code.
The motor can be controlled by three press buttons and five jumpers on the boards. The following list
provides the functions of DRV8833C EVM:
• START/STOP, SPEED UP, SPEED DOWN buttons
• DIRection control for motor jumper
• FULL/HALF step configuration jumper
• nSLEEP configuration jumper
• Chopping current configuration jumpers
2.1 Connectors
For the EVM, a single power supply is necessary. An LDO linear regulator has been placed on the EVM to
power the MCU. Maximum recommended VM for the EVM should be 10.8 V. See the DRV8833C
datasheet (SLVSCP9) for the complete voltage range information of the DRV8833C. When the power
supply is connected to the board, a green STATUS LED (D1) on the left of the board begins blinking.
Power for the DRV8833CEVM is available through connector J8, located on the bottom right of the EVM
as shown in Figure 3.
The motor connections are provided through connectors J5 and J6 on the right of the EVM.
Figure 3. Connectors
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Introduction to the EVM www.ti.com
2.2 Test Points
Test points are provided and labeled according to the inputs and outputs of the DRV8833C motor driver.
J4 is also provided as test points. If external control of the DRV8833C is desired, remove R11 to isolate
the MCU from the DRV8833C.
2.3 Jumpers and Buttons
Designator Picture Description
Sets the value of sensing resistor which determines the chopping current for the motor
Connect 1 jumper vertically on J1 and J3 for 200 mA
J1, J3 Connect 2 jumpers vertically on J1 and J3 for 400 mA
Connect 3 jumpers vertically on J1 and J3 for 600 mA
The picture to the left shows 3 jumpers connected on J1 and J3
START/STOP Press to start/stop the motor
SPEED UP Press and hold to increase the speed of the motor
SPEED DOWN Press and hold to decrease the speed of the motor
DIR Change direction of the motor
FULL/HALF Open for half micro-step, close for full step
nSLEEP Open for sleep mode, close to enable
START/STOP: Push the button to start or stop the motor. Starts the motor with the starting speed (100
pps at full micro-step, 200 pps at half micro-step). Stops the motor from current speed to zero with internal
fixed deceleration rate (200 pps at full micro-step, 400 pps at half micro-step). If the speed of the stepper
is less than stopping speed, the MCU will cut off the pulse-width modulation (PWM) input and stop the
stepper immediately.
SPEED UP: Push and hold to speed up the motor with internal fixed linear acceleration rate (200 pps at
full micro-step, 400 pps at half micro-step). Limited to the MAX speed by software (1000 pps at full micro-
step, 2000 pps at half micro-step).
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Starting Speed
Acceleration Rate
Stopping Speed
www.ti.com Introduction to the EVM
SPEED DOWN: Push and hold for speed down the motor with internal fixed linear deceleration rate (the
same as acceleration rate). Limited to the MIN speed by software (100 pps at full micro-step, 200 pps at
half micro-step).
DIR: Change the direction of the stepper, can be changed as the motor is spinning, but may cause the
motor to stall.
FULL/HALF: Change stepping mode, can be changed as the motor is spinning, but may cause the motor
to stall. Also updates the MIN/MAX and accelerating/decelerating rate.
Figure 4. Speed Curve of the DRV8833C
2.4 Operating the EVM
The DRV8833CEVM operates without the need of a GUI. After the power supply and motor is connected
to the board, the motor will spin up by pressing the START/STOP button. The speed of the motor can be
increased by pressing the SPEED UP button and can be decreased by pressing the SPEED DOWN
button. The direction will be changed by removing or connecting the shunt on the DIR jumper. Leaving the
FULL/HALF jumper open, puts the motor into half-step mode. Keeping the FULL/HALF closed places the
motor full-step mode. Remove the shunt on nSLEEP jumper to put the DRV8833C in sleep mode. The
chopping current of the EVM can be modified by adding or removing the shunts on J1 and J3 which will
change the value of the sense resistor.
5
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nSLEEP
AOUT1
AISEN
AOUT2
BOUT2
BISEN
BOUT1 nFAULT BIN1 BIN2
NC
VM
GND
VINT
AIN2 AIN1
(PPAD)
U1
DRV8833C
DVCC
1
P1.0/TA0CLK/ACLK/A0/CA0
2
P1.1/TA0.0/UCA0RXD/UCA0SOMI/A1/CA1
3
P1.2/TA0.1/UCA0TXD/PUCA0SIM O/A2/CA2
4
P1.3/ADC10CLK/CAOUT/VREF-/A3/CA3
5
P1.4/SMCLK/UCB0STE/UCA0CLK/VREF+
6
P1.5/TA0.0/UCB0CLK/A5/CA5
7
P2.0/TA1.0
8
P2.1/TA1.1
9
P2.2/TA1.1
10 P2.3/TA1.0 11
P2.4/TA1.2 12
P2.5/TA1.2 13
P1.6/TA0.1/UCB0SOMI/UCB0SCL/A6/CA6 14
P1.7/UCB0SIMO/UCBSDA/A7/CA7 15
RST/NMI/SBWTDIO 16
TEST/SBWTCK 17
XOUT/P2.7 18
XIN/P2.6/TA0.1 19
DVSS 20
U2
MSP430G2553IPW20
1
2
3
4
J2
Spy-Bi-Wire
47k
R1
1nF
C4
Speed down
V3P3 1µF
C3
2.2µF
C6
1.0
R2
1.0
R3
1.0
R4
1.0
R5
1.0
R6
1.0
R7
AOUT1
AOUT2
BOUT2
BOUT1
AISEN
BISEN
1
2
nSLEEP
V3P3
V3P3
390
R10
10k
R9
C
1A2
D2
nFAULT
390
R8
C
1A2
D1
STATE
2.2µF
C2
1µF
C1
1
2
3
4
J7
1
2
J5
ED555/2DS 1
2
J8
ED555/2DS
AOUT1
AOUT2
BOUT2
BOUT1
AOUT1
AOUT2
BOUT2
BOUT1
VM
BOUT1
BOUT2
AOUT2
AOUT1
V3P3
VM
BISEN
AISEN
1
2
3
4
5
J4
1
2
DIR
1
2
Full/Half
Notes: 1) For normal operation, populate resistor packs R11
2) For external control, remove resistor packs R11, and provide signals at J4
3) Signals can be observed at J4 during normal operation
Stepper motor connector VM input connector (4V to 10.8V)
IN
1OUT 5
2
CBYP 4 ON/OFF
3
GND
U4
LP2985
1
2
3
4
5
6
7
8 9
10
11
12
13
14
15
16
R11
EXB-2HV330JV
RST
2
GND
1
VDD 3
U3
TLV 803DBZ
0.01µF
C7
VM V3P3
VM to 3.3V LDO
V3P3RST
RST
3.3V monitor
12 34 56
J1
12 34 56
J3
nFAULT
AIN1
AIN2
BIN2
BIN1
P1.0
P1.1
P1.2
P1.3
P1.0
P1.1
P1.2
P1.3
MSP430G2553 Unit
nFAULT LED
AIN1
AIN2
BIN2
BIN1
22µF
C5
DRV8833C Unit
BISEN AISEN
Current sense resistors
AOUT2
BOUT2
AOUT1
BOUT1
BISEN
AISEN
V3P3
VM
Test pointsControl signal bridge
VM
Connect 1 Jumper for 200mA
Ichop = 0.2V/RSENSE
(Note: In most of cases, C5=10uF will be fine with motor load < 10W)
1
2
J6
ED555/2DS
GND1
GND
1GND 2
GND2
VINT VINT
VINT
Speed up Start/Stop
Connect 2 Jumpers for 400mA
Connect 3 Jumpers for 600mA
Schematic www.ti.com
3 Schematic
The schematic (Figure 5) in this document may be less resolution ratio. Refer to the separately provided schematic file in the EVM reference
package.
Figure 5. EVM Schematic
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www.ti.com EVM Bill of Materials (BOM)
4 EVM Bill of Materials (BOM)
Table 1 lists the BOM for this EVM.
Table 1. Bill of Materials
Designator Description Manufacturer Part Number Quantity
!PCB Printed Circuit Board Any DRV8833CEVM 1
AISEN, AOUT1, AOUT2, BISEN, BOUT1, BOUT2, Test Point, Compact, SMT Keystone 5016 10
GND1, V3P3, VINT, VM
C1, C3 CAP, CERM, 1uF, 16V, +/-10%, X5R, 0603 Kemet C0603C105K4PACTU 2
C2, C6 CAP, CERM, 2.2uF, 10V, +/-10%, X5R, 0603 Kemet C0603C225K8PACTU 2
C4 CAP, CERM, 1000pF, 50V, +/-5%, X7R, 0603 Kemet C0603C102J5RACTU 1
C5 CAP, CERM, 22uF, 16V, +/-10%, X5R, 1206 MuRata GRM31CR61C226KE15L 1
C7 CAP, CERM, 0.01 µF, 50 V, +/- 10%, X7R, 0603 MuRata GRM188R71H103KA01D 1
D1 Diode, LED, Green, 2.1-V, 20-mA, 6-mcd Lite On LTST-C190GKT 1
D2 Diode, LED, Red, 2.1-V, 20-mA, 6-mcd Lite On LTST-C190CKT 1
DIR, Full/Half, nSLEEP Header, 100mil, 2x1, Tin plated, TH Molex 90120-0122 3
FID1, FID2, FID3 Fiducial mark. There is nothing to buy or mount. N/A N/A 3
GND2 1MM UNINSULATED SHORTING PL Harwin D3082-05 1
J1, J3 Header, 100mil, 3x2, Tin, TH Sullins Connector Solutions PEC03DAAN 2
J2 SOCKET .050" GRID SIP 4 POS R/A, TH Mill-Max 851-43-004-20-001000 1
J4 Header, Male 5-pin, 100mil spacing, Sullins PEC05SAAN 1
J5, J6, J8 Terminal Block, 6A, 3.5mm Pitch, 2-Pos, TH On-Shore Technology ED555/2DS 3
J7 Header, Male 4-pin, 100mil spacing, Sullins PEC04SAAN 1
R1 RES, 47k ohm, 5%, 0.1W, 0603 Vishay-Dale CRCW060347K0JNEA 1
R2, R3, R4, R5, R6, R7 RES, 1.0 ohm, 5%, 0.125W, 0805 Vishay-Dale CRCW08051R00JNEA 6
R8 RES, 390 ohm, 1%, 0.1W, 0603 Yageo America RC0603FR-07390RL 1
R9 RES, 10k ohm, 5%, 0.1W, 0603 Vishay-Dale CRCW060310K0JNEA 1
R10 RES, 390 ohm, 5%, 0.1W, 0603 Vishay-Dale CRCW0603390RJNEA 1
R11 RES, 33 ohm, 5%, 0.0625W, Resistor Array - 8x1 Panasonic EXB-2HV330JV 1
SH-DIR, SH-Full/Half, SH-J1_1, SH-J1_2, SH-J1_3, Shunt, 100mil, Gold plated, Black 3M 969102-0000-DA 9
SH-J3_1, SH-J3_2, SH-J3_3, SH-nSLEEP
Speed down, Speed up, Start/Stop Tactile Switches 3.9x2.9x2.0mm 160gf ALPS SKRKAEE010 3
U1 DRV8833C 0.7A Stepper Driver Texas Instruments DRV8833CRGT 1
U2 IC, Mixed Signal Microcontroller TI MSP430G2553IPW20 1
U3 IC, Voltage Supervisors with Active-Low, Open-Drain Reset TI TLV803SDBZ 1
U4 Micropower 150 mA Low-Noise Ultra Low-Dropout Regulator, 5- Texas Instruments LP2985IM5-3.3/NOPB 1
pin SOT-23, Pb-Free
7
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STANDARD TERMS AND CONDITIONS FOR EVALUATION MODULES
1. 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.
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 and conditions 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 and conditions 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 any defects that are 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. Moreover, TI shall not be liable for any defects that result from User's design, specifications or
instructions for such EVMs. Testing and other quality control techniques are used to the extent TI deems necessary or as
mandated by government requirements. TI does not test all parameters of each EVM.
2.3 If any EVM fails to conform to the warranty set forth above, TI's sole liability shall be at its option to repair or replace such EVM,
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:
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.
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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
Concerning EVMs Including Radio Transmitters:
This device complies with Industry Canada license-exempt RSS standard(s). 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 are NOT certified by
TI as conforming to Technical Regulations of Radio Law of Japan.
If User uses EVMs in Japan, User is required by Radio Law of Japan to follow the instructions below with respect to EVMs:
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.
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【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】
本開発キットは技術基準適合証明を受けておりません。
本製品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
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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.
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