EVAL-ADXL372Z-M - ANALOG DEVICES

EVAL-ADXL372Z-M User Guide

UG-1237

One Technology Way • P. O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com

Evaluating the ADXL372 Digital Accelerometer

PLEASE SEE THE LAST PAGE FOR AN IMPORTANT

WARNING AND LEGAL TERMS AND CONDITIONS. Rev. 0 | Page 1 of 13

FEATURES

Flexible inertial sensor platform

Single motherboard operates with interchangeable

satellite boards

Separates DUT from controller for accurate environmental

testing

Continuous stream to file data recording

Standard USB cable for power and communications

PC-based GUI

Fast, easy installation

ONLINE RESOURCES

Evaluation Kit Contents

EVAL-ADXL372Z-M

USB A to Mini-B cable

18-inch, 20-pin ribbon cable

Documents Needed

ADXL372 data sheet

Software Needed

ADXL372 Evaluation GUI

Design and Integration Files

Schematics, layout files, bill of materials

EQUIPMENT NEEDED

PC running Windows® operating system

USB 2.0 port

GENERAL DESCRIPTION

The iMEMS® ADXL372 inertial sensor evaluation system is an

easy-to-use evaluation tool targeting bench or desktop charac-

terization of Analog Devices, Inc., inertial sensor products. The

system consists of the inertial sensor evaluation board (ISEB),

or motherboard, and a satellite board for any Analog Devices

inertial sensor product. The ISEB connects directly to a PC via a

USB cable. The USB connection provides both communications

and power to the ISEB.

The ISEB connects to the satellite board through a ribbon cable.

The ribbon cable allows the satellite to be easily manipulated for

testing or separately placed into an environmental chamber for

temperature or humidity testing. Separating the boards mitigates

corruption of data caused by the temperature and humidity

effects of other components.

The ISEB is a universal motherboard for use with various satellite

boards for Analog Devices inertial sensors, including analog

and digital accelerometers and gyroscopes. The various products

are evaluated by means of separate graphical user interfaces

(GUIs) that are customized for performance and characterization

measurements relevant to the inertial sensor being evaluated.

There are two types of motherboards, one named –M and the

other named –MLP. The differences between –M and –MLP are

the shunt resistor, R13, and the gain resistor, R17, which detect

the power consumption of the device under test (DUT). The

E VA L-ADXL372Z-M uses the –M motherboard. The EVAL-

ADXL372Z-M is a system solution that includes the motherboard,

satellite board, cables, and software.

Because the ADXL372 is pin-to-pin compatible with ADXL362,

the ADXL372 and ADXL362 satellite boards are interchangeable.

The EVAL-ADXL372Z-M system contains the ISEB and the EVAL-

ADXL372Z-S satellite. Also included is a USB A to Mini-B cable

to connect the ISEB to a PC, and an 18-inch, 20-pin ribbon cable

to connect the ISEB to the satellite board.

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TABLE OF CONTENTS

Features .............................................................................................. 1

Online Resources .............................................................................. 1

Equipment Needed ........................................................................... 1

General Description ......................................................................... 1

Revision History ............................................................................... 2

Evaluation Board Photographs ....................................................... 3

Getting Started .................................................................................. 4

Software Installation Procedures ................................................ 4

Evaluation Board Setup Procedures ........................................... 6

Evaluation Board Hardware .............................................................8

Evaluation Purposes......................................................................8

Power Supplies ...............................................................................8

Jumper Settings ..............................................................................8

Evaluation Board Circuitry ..........................................................8

Software for Testing...........................................................................9

Real-Time Data Tab ......................................................................9

Power Consumption Tab ........................................................... 10

Configuration Tab ...................................................................... 12

REVISION HISTORY

2/2018—Revision 0: Initial Version

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EVALUATION BOARD PHOTOGRAPHS

Figure 1. EVAL-ADXL372Z-M ISEB (ADXL362Z Satellite Board Pictured)

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GETTING STARTED

This section provides quick start procedures for using the

E VA L-ADXL372Z-M evaluation system, describing both the

default and optional settings. Take the following steps to ensure

proper set up and operation of the EVAL-ADXL372Z-M

evaluation system:

1. Install the USB drivers for the inertial sensor evaluation

system (ISEB).

2. Connect the ISEB hardware to the PC.

3. Install the latest firmware revision (located at analog.com)

into the ISEB hardware. Note that if the default firmware

matches the default GUI, Step 3 is unnecessary. However, if

the microcontroller unit (MCU) has been reprogrammed

for other applications, or the firmware or GUI have been

updated by Analog Devices, the corresponding firmware

for evaluation ADXL372 must be downloaded. The firmware

and GUI installer on analog.com are always a match to

each other.

4. Install the run-time engine and the ADXL372 evaluation

GUI.

5. Configure the ISEB hardware.

6. Launch the ADXL372 evaluation GUI and test devices.

SOFTWARE INSTALLATION PROCEDURES

Install USB Drivers

To install the USB drivers, follow these steps:

1. Execute the CP210xVCPInstaller_x64.exe file located in

/ISEB_USB_Driver/. Choose the corresponding driver

according to your specific operating system.

2. Follow the on-screen instructions to install the drivers.

3. If prompted with a message that the drivers are not tested,

click Continue Anyway.

4. After completing Step 1 to Step 3, connect the ISEB mother-

board to the computer via the USB cable that is included in

the kit.

5. The Device Manager detects the ISEB automatically in the

Silicon Labs CP210x USB to UART Bridge under the Ports

(COM & LPT) selection. Open the Device Manager to

verify hardware detection and to record the communication

port associated with the ISEB for use in the GUI.

COM Port Verification

Installing the latest firmware revision, as well as operating the

ADXL372 evaluation GUI, requires knowing which commu-

nications port is assigned to the ISEB motherboard. After

connecting the ISEB motherboard to the PC, perform the

following steps to determine the assigned COM port number:

1. From the Start menu, right-click My Computer and select

Properties.

2. Select Device Manager.

a. Click OK.

3. Expand the Ports (COM & LTP) menu item, as shown in

Figure 2. Silicon Labs CP210x USB to UART Bridge should

be listed with an assigned COM port number in

parentheses.

a. If the Silicon Labs CP210x USB to UART Bridge is

not listed, repeat the Install USB Drivers process or

change the PC and retry.

4. Note the COM port number for future use.

Figure 2. Device Manager Showing the COM Port Number

Installing the Latest ISEB Firmware

The latest ISEB firmware is available on the Analog Devices

website, analog.com. To use the ISEB evaluation hardware, the

ISEB firmware must be flashed to the ISEB controller. The

Analog Devices website contains the firmware and the utility

that allows you to flash a new version of the firmware onto the

ISEB microcontroller. In addition, as new firmware becomes

available, it can be downloaded from analog.com.

To flash the ISEB microcontroller, follow these steps:

1. Ensure that the ISEB is connected to, and detected by, the

PC. The COM port on which the device is recognized must

be obtained, as instructed in the COM Port Verification

section.

2. Run the ARMWSD.exe program located in the

/ISEB_USB/FW/ folder. It displays information about the

downloader, as shown in Figure 3.

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Figure 3. ISEB ARMWSD Firmware Downloader

3. Click Browse… and select the ADI_ISEB_FW_XL372.hex

file located in the /ISEB_USB/FW/ folder or the most

recent firmware obtained from analog.com.

4. Click Configure to display the configuration box (see

Figure 4).

5. Configure the downloader file for the ADuC7026

microcontroller on the ISEB. The only option that may

require a change is the COM port.

a. Select the correct port from the Serial Port menu on

the Comms tab (see Figure 4).

b. If the .hex file does not download correctly, lower the

baud rate (see the Baudrate dropdown box in Figure 4)

and retry.

6. After selecting the COM port, click OK to accept the

changes and return to the ARMWSD dialog box (see

Figure 3).

Figure 4. Selecting the Correct COM Port for the Downloader

After connecting the ISEB, selecting the correct firmware, and

fully configuring the downloader, follow these steps to flash the

firmware:

1. Click Start in the ARMWSD dialog box (see Figure 3) to

initiate the flashing.

2. Click the two buttons, SW1 and SW2 (shown in Figure 5)

on the ISEB, in the following sequence to flash the firmware

(see Figure 6):

a. Press and hold SW1.

b. While holding SW1, press and release SW2.

c. Release SW1.

The download begins and is verified automatically by the

downloader.

Figure 5. ISEB Switch Locations for Flashing the Microcontroller

Figure 6. Method to Press, Hold, and Release SW1 and SW2

3. If the downloading process fails, which is indicated in the

Monitor Status box (see Figure 3), attempt the download

again by clicking Start and then pressing the appropriate

switch combination. It may require a few attempts to

reprogram the board.

4. After the download has completed, click Reset (as shown

in Figure 3) to reset the ISEB and to begin running the new

firmware. When this step is complete, the board is updated

correctly.

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ADuC7026

CONNECTOR

SW1 SW2

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(A)

SW2 AND SW1 REL E AS E D (B)

PUSH SW1

SW2

(RESET = 1) SW1

(SERIAL DOWNLOAD = 1) SW2

(RESET = 1) SW1

(SERIAL DO WNLOAD = 0)

(C)

PUSH SW2 (D)

RELEASE SW2

SW2

(RESET = 0) SW1

(SERIAL DOWNLOAD = 0) SW2

(RESET = 1) SW1

(SERIAL DO WNLOAD = 0)

(E)

RELEASE SW1

SW2

(RESET = 1) SW1

(SERIAL DOWNLOAD = 1)

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Updating the firmware may require that a new evaluation GUI

be obtained. If the firmware on the website is used to flash the

ISEB, the evaluation GUI on the corresponding website is

sufficient. If the firmware used is obtained from the Analog

Devices website, use the most recent version of the evaluation

GUI, which is also located on analog.com.

Installing the ADXL372 Software Evaluation GUI

For proper operation, additional drivers and run-time engines

are necessary. The software GUI installation did not include the

requisite National Instruments drivers and run-time engines or

VIA. If there are no such run-time engines on your computer,

these must be installed before installing the ADXL372 software

evaluation GUI. The run-time engine installer is found in the

/Run Time Engine/ folder on analog.com. To run the software

GUI installation routine, double-click the setup.exe file located

in the /ADXL372 Evaluation Software/ folder on the website.

Complete the following steps to install the evaluation software:

1. Select the destination directory. The installer autopopulates

the names of the directories in which to store the software

GUI and required National Instruments products (see

Figure 7). You can change these directories; however, most

installations can proceed with the default values.

2. After selecting a directory, click Next. The National

Instruments Software License Agreement is displayed.

3. Read the license agreement before accepting it. Click Next.

The installer lists the required components to install on

your PC (see Figure 8).

4. Click Next to start the installation. The installer completes

installation of the software evaluation GUI and all required

National Instruments drivers and run-time engines. After

the installation is complete, the dialog box (see Figure 9) is

displayed.

5. Click Finish to complete the installation.

Figure 7. ADXL372 Evaluation Board GUI Destination Director Selection

Figure 8. ADXL372 Evaluation Board GUI Start Installation

(Listing Varies Based on PC Requirements)

Figure 9. ADXL372 Evaluation Board GUI Installation Complete

EVALUATION BOARD SETUP PROCEDURES

Before using the software for testing, configure the evaluation

board as follows:

1. Place the ADXL372 accelerometer into the socket on the

satellite board. The Socket Pin 1 indicator is located inside

the socket near the hinge, as shown in Figure 10. Ensure

that this pin indicator aligns with the Pin 1 indicator on the

ADXL372.

Figure 10. Location of Pin 1 Indicator for the ADXL372 Accelerometer and

Socket

2. After positioning the ADXL372 in the socket, firmly close

the socket until it latches.

3. Connect the ISEB to the ADXL372 satellite using the

18-inch, 20-pin ribbon cable. The ribbon cable is keyed to

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ADXL 372 SOCKET

PI N 1 I NDICAT OR ADXL372A

ACCELEROMETER

PI N 1 I NDICAT OR

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prevent inserting it backwards and causing damage to the

system.

4. Connect the ADXL372 satellite to the opposite end of the

ribbon cable.

5. Connect the ISEB to the USB cable.

6. Plug the USB A to Mini-B cable into the PC. If prompted

to install the device, see the Install USB Drivers section for

details regarding how to install and select the correct driver.

The ADXL372 evaluation system is set up and ready to use.

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EVALUATION BOARD HARDWARE

The EVAL-ADXL372Z-M provides all of the support circuitry

required to operate the ADXL372 in its various modes and

configurations. Figure 1 shows a typical bench characterization

setup to evaluate the ADXL372.

EVALUATION PURPOSES

There are two purposes for using the EVAL-ADXL372Z-M: to

study the ADXL372 or for secondary development.

Study the ADXL372

The EVAL-ADXL372Z-M is useful to study and evaluate the

ADXL372. The user can view and save the real-time output of

ADXL372 on a PC for the following purposes:

•Algorithm development

•Power consumption under various work modes

•Power supply changes

•Power supply performance using various supplies

Secondary Development

The EVAL-ADXL372Z-M can be used for secondary

development. The user can experiment and realize various

reference designs, such as a shock detection demonstration.

POWER SUPPLIES

Many of the EVAL-ADXL372Z-M functions are supported by

the USB directly, requiring no other power supply to run the

board. There are on-board dc-to-dc, low dropout (LDO), and

voltage references to adjust the supply for each product on the

evaluation board.

JUMPER SETTINGS

Before powering the board, set the jumper settings/link options

on the evaluation board for the required operating modes. The

functions of the jumpers are described in Table 1.

Table 1. Jumper Settings

Jumper Description

P1 Interface for connecting motherboard and satellite

board.

J1 Interface for sync trigger input. For applications that

require a precisely timed acceleration measurement, the

ADXL372 features an option to synchronize acceleration

sampling to an external trigger. To evaluate this function,

customers need to provide an external trigger signal and

reprogram the ADXL372 themselves.

J2 Interface for external clock input. ADXL372 has a built-in

clock that, by default, is used for clocked internal

operations. To use an external clock, customers need to

provide an external clock and reprogram the ADXL372

themselves.

JP1 This jumper controls whether to show the INT2 pin status

of the ADXL372 with an LED.

JP2 This jumper controls whether to show the INT1 pin status

of the ADXL372 with an LED.

EVALUATION BOARD CIRCUITRY

The two key products on the EVAL-ADXL372Z-M are the

accelerometer and the microcontroller.

Accelerometer

The ADXL372 is an ultra low power, 3-axis, ±200 g MEMS

accelerometer that consumes 22 μA at a 3200 Hz output data

rate. The ADXL372 does not power cycle its front end to

achieve its low power operation, thereby eliminating the risk of

aliasing the sensor output.

In addition to its ultra low power consumption, the ADXL372

has many features to enable impact detection while providing

system level power reduction. The device includes a deep multi-

mode output FIFO, several activity detection modes, and a

method for capturing only the peak acceleration of overthreshold

events.

Microcontroller

The microcontroller on the EVAL-ADXL372Z-M is the

ADuC7026. It is a fully integrated, 1 MSPS, 12-bit data

acquisition system that incorporates

•High performance, 12-channel, analog-to-digital

converters (ADCs)

•32-bit MCU

•Flash®/EE memory on a single chip

•Four digital-to-analog converter (DAC) outputs to control

the power supply of the ADXL372

The development tools, such as the ARMWSD serial

downloader, evaluation version IAR, and evaluation version

Keil, are available online from the MicroConverter®

Development Tools page on analog.com.

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SOFTWARE FOR TESTING

Figure 11. ADXL372 Evaluation GUI Startup

Before running the software evaluation GUI, reset the ISEB by

pressing the SW2 button described in the Installing the Latest

ISEB Firmware section. Pressing SW2 removes any errors that

may be lingering due to an improper shutdown or disconnection

from the PC.

After completion of the software GUI installation routine, a

shortcut to launch the executable is added to the Program

Menu->Analog Devices – Inertial Sensor Eval. To launch the

evaluation GUI, click ADXL372 EVB GUI. A window similar

to the one shown in Figure 11 displays.

At this point, the functionality of the GUI deactivates completely.

Before testing any devices, the software GUI must be associated

with the previously installed hardware through the COM port.

See the PC Device Manager under the Ports (COM & LTP)

submenu to determine which COM port is assigned to the

Analog Devices inertial sensor evaluation system. Select this

COM port from the dropdown menu, and click Connect to

begin using the GUI.

After the COM port is connected, the full functionality of the

software evaluation GUI is available for use. The following

sections describe the purpose of each tab of the GUI. Exit the

GUI at any time by clicking Quit Program located in the lower

right side of the startup window.

Note: do not press the reset button (SW2) while the GUI is

running because it causes the ISEB and the software GUI to lose

sync and the evaluation system to malfunction. Additionally, if

for any reason, the ISEB board and the software evaluation GUI

do not appear to be properly communicating, perform the

following reset routine:

1. Close the software GUI by clicking Quit Program or by

selecting File/Exit.

2. When the software GUI is closed, reset the ISEB evaluation

board by pressing the reset button (SW2).

3. Restart the software GUI.

REAL-TIME DATA TAB

Figure 12. Real-Time Data Tab

The Real Time Data tab configures the inertial sensor

evaluation system and the ADXL372 for real-time acceleration

monitoring. The tab contains an oscilloscope-like interface to

view the output of the accelerometer and adjust the relevant

parameters, such as output data rate, bandwidth, filter, and

offset (see Figure 12).

The Low Noise checkbox toggles the LOW_NOISE bit of the

ADXL372. When low noise is activated, the device operates at

approximately 1/3 the normal noise level.

The LFP_DISABLE and HPF_DISABLE checkboxes toggle the

digital low-pass filter and digital high-pass filter bits of the

ADXL372. Activating the high- and low-pass filters disables the

internal digital filter of the ADXL372.

After configuration, begin real-time measurements by clicking

View Meas. To prevent software conflicts, clicking View Meas

causes many of the options and tabs to gray out or to disappear

until the Stop Meas button is clicked. The accelerometer output

data then begins to flow across the screen at the selected output

data rate.

Clicking View & Save Meas performs the same basic function

as View Meas except that it allows continuous data streaming to

the eleven .txt files. View & Save Meas is useful for recording

the response of the ADXL372 even during long-term events.

The first .txt file is named and located by the user, and the other

ten .txt files are named based on the first .txt file and located in

the same folder.

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For example, if a user named a file XL372Test.txt in the pop-up

dialog box and saved it onto his or her desktop, then ten additional

.txt files are built automatically on the desktop and named as

XL372Test_1.txt, XL372Test_2.txt, … XL372Test_10.txt.

A single .txt file can save up to 64,000 samples. For test runs

that generate more than 64,000 samples, each .txt file fills

sequentially with 64,000 samples per file until the test run

completes. Thus, in this example, the first .txt file, XL372Test.txt,

saves the first 64,000 samples. The next 64,000 samples gener-

ated by the test are saved to XL372Test_1.txt, and so forth until

the test completes.

For a large test where there are more than 64,000 samples to be

saved in the tenth .txt file, the tenth .txt file possesses unlimited

storage potential. Therefore, the data marked for storage in the

tenth .txt file is saved continuously, even when its size exceeds

64,000 samples. In this way, no data is lost and all data is organized

uniformly across all .txt files until the tenth .txt file.

For tests of the sensor that are of a short duration and the

samples do not fill all ten .txt files, the empty .txt files are

deleted automatically when the Stop Meas button is clicked. In

this way, the program saves only those files that contain data.

Each .txt file created contains a header with the date and time.

In addition, the acceleration data for the X-, Y-, and Z-axes, in

gravity, align in tab-delimited columns.

To examine the details of a shock waveform, click the Zoom In

button and use this function, as shown in the callout box in

Figure 13. After clicking the Zoom In link (outlined in the

callout in Figure 13), choose the area of interest. Alternatively,

analyze the waveform in Excel® or MATLAB based on the saved

.txt files.

Figure 13. Zoom In Function

To display the entire waveform again after zooming into a

particular section of the waveform, use the icon (circled in

Figure 14).

Figure 14. Display Whole Waveform Function

POWER CONSUMPTION TAB

Figure 15. Power Consumption Tab

When used properly, the ADXL372 offers extremely low system

level power consumption. The innovative instant on and autosleep

functionality allow the device to sleep and wake up based on exter-

nally applied acceleration. Additionally, ADXL372 provides a lower

noise operating mode at the expense of only a small increase in

current consumption.

The following functionality is available within the Power

Consumption tab:

•Mode of Operation configures the device for full band-

width measurement, instant on, wake-up, or autosleep

mode. Each of these options corresponds to different

device behaviors and different power consumption levels.

•Activity and Inactivity Configuration options are enabled

when autosleep mode and full bandwidth mode are

selected. In autosleep mode, the Activity Interrupt

Configuration options (shown in Figure 15) adjust the

settings that determine the level of activity and the length

of time required to wake the device from sleep mode. The

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Inactivity Interrupt Configuration options (shown in

Figure 15) adjust the settings that control the level of

inactivity and how much time is required to put the device

into sleep mode. For example, the ADXL372 transitions

from activity to inactivity mode when the ADXL372

remains stable for a long enough time. When the ADXL372

enters inactivity mode, the ADXL372 continues to operate

while in sleep mode or while in the low speed sampling

rate mode.

Power Consumption Tab, Common Uses

Two commonly used power consumption conditions can be

applied to the ADXL372 evaluation system: instant on behavior

and autosleep behavior.

Instant-On Behavior

The ADXL372 instant-on mode is an ultra low power mode

that continuously monitors the environment for impact events

that exceed a built-in threshold. When detecting an impact, the

device switches into full measurement mode and captures the

impact profile.

In Figure 16, when the acceleration is lower than the built-in

threshold, there is no digitized acceleration output and the

power consumption is lower than 2 μA. Adding a shock event

on the board to make the acceleration exceed the built-in

threshold causes the ADXL372 to switch immediately into full

bandwidth measurement mode and captures the impact profile.

Figure 16. Instant-On Mode

The built-in threshold is either 10 g to 15 g or 30 g to 40 g. A

user can choose the threshold by disabling or enabling the High

Instant On Threshold checkbox. Checking High Instant On

Threshold sets the threshold at 30 g to 40 g. Unchecking High

Instant On Threshold sets the threshold at 10 g to 15 g. To use

the other threshold and still monitor the shock or vibration

event with just several μA, use the autosleep mode.

Upon the accelerometer entering full bandwidth measurement

mode, it must be set back into instant-on mode manually by

clicking the Stop Meas button and then clicking the View Meas

button again. It cannot return to instant-on mode automatically.

Autosleep Behavior

To observe the behavior of the device when in autosleep mode,

apply the settings listed in Table 2.

Table 2. Recommended Settings for Autosleep Operation

Parameter Setting

Mode of Operation Autosleep

Data Rate in Full Bandwidth

Measurement Mode

3200 Hz

Bandwidth 1600 Hz

Wake-Up Rate 512 ms

Low Noise Mode

Normal operation

Low-Pass Filter Enable

High-Pass Filter Disable

Activity Configuration

Activity Interrupt On

Activity Threshold

2 g

Activity Time 3.3 ms

Coupling AC

Inactivity Configuration

Inactivity Interrupt On

Inactivity Threshold 2 g

Inactivity Time 3016 ms

Coupling AC

After the settings are applied, click View Meas. As shown in

Figure 17, when there is no motion to trigger the activity

interrupt the ADXL372 works in wake-up mode. The device

powers down for a duration of time equal to the Wakeup

Rate (ms) setting and then turns on to sample the front end.

Figure 17. Wake-Up Mode

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If sustained motion is detected (for example, continuous

shaking of the board), the ADXL372 recognizes the activity

event and switches automatically to full bandwidth

measurement mode, as shown in Figure 18.

Figure 18. Sustained Motion Trigger Activity Interrupt

Following this sustained motion event, if the board remains

stable for more than its specified time (it is 3016 ms in the

example), the device returns to wake-up mode automatically, as

shown in Figure 19.

Figure 19. Autosleep Operation

CONFIGURATION TAB

The Configuration tab allows the user to set the operating

conditions for the ADXL372, as well as read/write the contents

of the memory map. Figure 20 shows the Configuration tab

after the COM port verification step has been completed.

Figure 20. Configuration Tab

The following actions are available in the Configuration tab:

•Set VS sets the main voltage of the ADXL372. The default

value is 2.5 V. When the Set VS button is clicked, the ISEB

applies the desired supply voltage and then reads back the

ADXL372 operating voltage, interface voltage, and current

consumption.

•Set VDD I/O sets the interface voltage of the ADXL372.

The default value is 2.4 V. When the Set VDD I/O button

is clicked, the ISEB applies the desired interface voltage,

and then reads back the ADXL372 operating voltage,

interface voltage, and current consumption.

•Write Target Register performs a write to a register. To

write a value to a register, select the register from the Write

Target Register menu and click the D7 through D0

indicators to set the value. When an indicator is lit, the

value written to that bit is Logic 1. When the indicator is

unlit, the value written to that bit is Logic 0. When the

that the D7 through D0 indicators in the Write Target

•Read Target Register performs as a read from a register.

To read a value from a register, select the register from the

Read Target Register menu and click the Read Target

refresh to reflect the target register content.

•Read All Registers performs a readback of the entire

ADXL372 memory map. Clicking Read All Registers

updates all register values and indicators on the right side

of the screen.

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NOTES

ESD Caution

ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection

circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality.

Legal Terms and Conditions

By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and conditions

set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation Board until you

have read and agreed to the Agreement. Your use of the Evaluation Board shall signify your acceptance of the Agreement. This Agreement is made by and between you (“Customer”) and Analog Devices, Inc.

(“ADI”), with its principal place of business at One Technology Way, Norwood, MA 02062, USA. Subject to the terms and conditions of the Agreement, ADI hereby grants to Customer a free, limited, personal,

temporary, non-exclusive, non-sublicensable, non-transferable license to use the Evaluation Board FOR EVALUATION PURPOSES ONLY. Customer understands and agrees that the Evaluation Board is provided

for the sole and exclusive purpose referenced above, and agrees not to use the Evaluation Board for any other purpose. Furthermore, the license granted is expressly made subject to the following additional

limitations: Customer shall not (i) rent, lease, display, sell, transfer, assign, sublicense, or distribute the Evaluation Board; and (ii) permit any Third Party to access the Evaluation Board. As used herein, the term

“Third Party” includes any entity other than ADI, Customer, their employees, affiliates and in-house consultants. The Evaluation Board is NOT sold to Customer; all rights not expressly granted herein, including

ownership of the Evaluation Board, are reserved by ADI. CONFIDENTIALITY. This Agreement and the Evaluation Board shall all be considered the confidential and proprietary information of ADI. Customer may

not disclose or transfer any portion of the Evaluation Board to any other party for any reason. Upon discontinuation of use of the Evaluation Board or termination of this Agreement, Customer agrees to

promptly return the Evaluation Board to ADI. ADDITIONAL RESTRICTIONS. Customer may not disassemble, decompile or reverse engineer chips on the Evaluation Board. Customer shall inform ADI of any

occurred damages or any modifications or alterations it makes to the Evaluation Board, including but not limited to soldering or any other activity that affects the material content of the Evaluation Board.

Modifications to the Evaluation Board must comply with applicable law, including but not limited to the RoHS Directive. TERMINATION. ADI may terminate this Agreement at any time upon giving written notice

to Customer. Customer agrees to return to ADI the Evaluation Board at that time. LIMITATION OF LIABILITY. THE EVALUATION BOARD PROVIDED HEREUNDER IS PROVIDED “AS IS” AND ADI MAKES NO

WARRANTIES OR REPRESENTATIONS OF ANY KIND WITH RESPECT TO IT. ADI SPECIFICALLY DISCLAIMS ANY REPRESENTATIONS, ENDORSEMENTS, GUARANTEES, OR WARRANTIES, EXPRESS OR IMPLIED, RELATED

TO THE EVALUATION BOARD INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, TITLE, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF INTELLECTUAL

PROPERTY RIGHTS. IN NO EVENT WILL ADI AND ITS LICENSORS BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES RESULTING FROM CUSTOMER’S POSSESSION OR USE OF

THE EVALUATION BOARD, INCLUDING BUT NOT LIMITED TO LOST PROFITS, DELAY COSTS, LABOR COSTS OR LOSS OF GOODWILL. ADI’S TOTAL LIABILITY FROM ANY AND ALL CAUSES SHALL BE LIMITED TO THE

AMOUNT OF ONE HUNDRED US DOLLARS ($100.00). EXPORT. Customer agrees that it will not directly or indirectly export the Evaluation Board to another country, and that it will comply with all applicable

United States federal laws and regulations relating to exports. GOVERNING LAW. This Agreement shall be governed by and construed in accordance with the substantive laws of the Commonwealth of

Massachusetts (excluding conflict of law rules). Any legal action regarding this Agreement will be heard in the state or federal courts having jurisdiction in Suffolk County, Massachusetts, and Customer hereby

submits to the personal jurisdiction and venue of such courts. The United Nations Convention on Contracts for the International Sale of Goods shall not apply to this Agreement and is expressly disclaimed.

registered trademarks are the property of their respective owners.

UG16492-0-2/18(0)