Telit Wireless Solutions HE910 Installation manual

HE910 Hardware User Guide
1vv03700925 Rev.27 – 2015-05-25

HE910 Hardware User Guide
1vv0300925 Rev.27 – 2015-05-25
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 2 of 98
Applicability Table
PRODUCT
HE910 (*)
HE910-D
HE910-GL
HE910-EUR
HE910-EUD
HE910-EUG
HE910-NAR
HE910-NAD
HE910-NAG
(*) HE910 is the “type name” of the products marketed as HE910-G & HE910-DG

HE910 Hardware User Guide
1vv0300925 Rev.27 – 2015-05-25
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 3 of 98
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
Notice
While reasonable efforts have been made to assure the accuracy of this document, Telit assumes
no liability resulting from any inaccuracies or omissions in this document, or from use of the
information obtained herein. The information in this document has been carefully checked and is
believed to be entirely reliable. However, no responsibility is assumed for inaccuracies or
omissions. Telit reserves the right to make changes to any products described herein and
reserves the right to revise this document and to make changes from time to time in content
hereof with no obligation to notify any person of revisions or changes. Telit does not assume
any liability arising out of the application or use of any product, software, or circuit described
herein; neither does it convey license under its patent rights or the rights of others.
It is possible that this publication may contain references to, or information about Telit products
(machines and programs), programming, or services that are not announced in your country.
Such references or information must not be construed to mean that Telit intends to announce
such Telit products, programming, or services in your country.
Copyrights
This instruction manual and the Telit products described in this instruction manual may be,
include or describe copyrighted Telit material, such as computer programs stored in
semiconductor memories or other media. Laws in the Italy and other countries preserve for Telit
and its licensors certain exclusive rights for copyrighted material, including the exclusive right
to copy, reproduce in any form, distribute and make derivative works of the copyrighted
material. Accordingly, any copyrighted material of Telit and its licensors contained herein or in
the Telit products described in this instruction manual may not be copied, reproduced,
distributed, merged or modified in any manner without the express written permission of Telit.
Furthermore, the purchase of Telit products shall not be deemed to grant either directly or by
implication, estoppel, or otherwise, any license under the copyrights, patents or patent
applications of Telit, as arises by operation of law in the sale of a product.
Computer Software Copyrights
The Telit and 3rd Party supplied Software (SW) products described in this instruction manual
may include copyrighted Telit and other 3rd Party supplied computer programs stored in
semiconductor memories or other media. Laws in the Italy and other countries preserve for Telit
and other 3rd Party supplied SW certain exclusive rights for copyrighted computer programs,
including the exclusive right to copy or reproduce in any form the copyrighted computer
program. Accordingly, any copyrighted Telit or other 3rd Party supplied SW computer programs
contained in the Telit products described in this instruction manual may not be copied (reverse
engineered) or reproduced in any manner without the express written permission of Telit or the
3rd Party SW supplier. Furthermore, the purchase of Telit products shall not be deemed to grant
either directly or by implication, estoppel, or otherwise, any license under the copyrights,
patents or patent applications of Telit or other 3rd Party supplied SW, except for the normal
non-exclusive, royalty free license to use that arises by operation of law in the sale of a product.

HE910 Hardware User Guide
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Usage and Disclosure Restrictions
License Agreements
The software described in this document is the property of Telit and its licensors. It is furnished
by express license agreement only and may be used only in accordance with the terms of such
an agreement.
Copyrighted Materials
Software and documentation are copyrighted materials. Making unauthorized copies is
prohibited by law. No part of the software or documentation may be reproduced, transmitted,
transcribed, stored in a retrieval system, or translated into any language or computer language,
in any form or by any means, without prior written permission of Telit
High Risk Materials
Components, units, or third-party products used in the product described herein are NOT fault-
tolerant and are NOT designed, manufactured, or intended for use as on-line control equipment
in the following hazardous environments requiring fail-safe controls: the operation of Nuclear
Facilities, Aircraft Navigation or Aircraft Communication Systems, Air Traffic Control, Life
Support, or Weapons Systems (High Risk Activities"). Telit and its supplier(s) specifically
disclaim any expressed or implied warranty of fitness for such High Risk Activities.
Trademarks
TELIT and the Stylized T Logo are registered in Trademark Office. All other product or service
names are the property of their respective owners.
Copyright © Telit Communications S.p.A. 2011, 2013

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Contents
1INTRODUCTION .........................................................................................................................................................8
1.1 SCOPE ................................................................................................................................................................................8
1.2 AUDIENCE ...........................................................................................................................................................................8
1.3 CONTACT INFORMATION,SUPPORT..........................................................................................................................................8
1.4 DOCUMENT ORGANIZATION ...................................................................................................................................................9
1.5 TEXT CONVENTIONS ............................................................................................................................................................10
1.6 RELATED DOCUMENTS.........................................................................................................................................................10
1.7 DOCUMENT HISTORY ..........................................................................................................................................................11
2OVERVIEW .............................................................................................................................................................. 13
3HE910 MODULE CONNECTIONS...............................................................................................................................14
3.1 PIN-OUT .........................................................................................................................................................................14
3.1.1 LGA Pads Layout (HE910).......................................................................................................................................20
3.1.2 LGA Pads Layout (HE910-D) ...................................................................................................................................21
3.1.3 LGA Pads Layout (HE910-EUD/EUR, HE910-NAD/NAR and HE910-GL) ................................................................22
3.1.4 LGA Pads Layout (HE910-EUG and HE910-NAG)....................................................................................................23
4HARDWARE COMMANDS........................................................................................................................................24
4.1 TURNING ON THE HE910 ...................................................................................................................................................24
4.2 TURNING OFF THE HE910 ..................................................................................................................................................29
4.3 HE910 UNCONDITIONAL SHUTDOWN ....................................................................................................................................31
5POWER SUPPLY .......................................................................................................................................................34
5.1 POWER SUPPLY REQUIREMENTS ............................................................................................................................................34
5.2 POWER CONSUMPTION .......................................................................................................................................................35
5.3 GENERAL DESIGN RULES ......................................................................................................................................................36
5.3.1 Electrical Design Guidelines ...................................................................................................................................36
5.3.2 Thermal Design Guidelines.....................................................................................................................................40
5.3.3 Power Supply PCB layout Guidelines......................................................................................................................41
6GSM/WCDMA RADIO SECTION ............................................................................................................................... 43
6.1 HE910 PRODUCT VARIANTS ................................................................................................................................................43
6.2 TX OUTPUT POWER ............................................................................................................................................................43
6.3 SENSITIVITY .......................................................................................................................................................................44
6.4 GSM/WCDMA ANTENNA REQUIREMENTS............................................................................................................................44
6.5 GSM/WCDMA -PCB LINE GUIDELINES................................................................................................................................45
6.6 PCB GUIDELINES IN CASE OF FCC CERTIFICATION......................................................................................................................47
6.6.1 Transmission line design........................................................................................................................................47
6.6.2 Transmission line measurements ...........................................................................................................................48
6.7 GSM/WCDMA ANTENNA -INSTALLATION GUIDELINES ...........................................................................................................50
6.8 ANTENNA DIVERSITY REQUIREMENTS .....................................................................................................................................51
7GPS RECEIVER.......................................................................................................................................................... 52
7.1 GPS PERFORMANCES..........................................................................................................................................................52
7.2 GPS SIGNALS PINOUT .........................................................................................................................................................53
7.3 RF FRONT END DESIGN .......................................................................................................................................................53

HE910 Hardware User Guide
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7.3.1 RF Signal Requirements..........................................................................................................................................53
7.3.2 GPS Antenna Polarization ......................................................................................................................................54
7.3.3 GPS Antenna Gain ..................................................................................................................................................55
7.3.4 Active versus Passive Antenna ...............................................................................................................................55
7.3.5 GPS Antenna - PCB Line Guidelines ........................................................................................................................56
7.3.6 RF Trace Losses.......................................................................................................................................................56
7.3.7 Implications of the Pre-select SAW Filter ...............................................................................................................57
7.3.8 External LNA Gain and Noise Figure.......................................................................................................................57
7.3.9 Powering the External LNA (active antenna) .........................................................................................................57
7.3.10 External LNA Enable .............................................................................................................................................58
7.3.11 Shielding...............................................................................................................................................................59
7.3.12 GPS Antenna - Installation ...................................................................................................................................59
8LOGIC LEVEL SPECIFICATIONS..................................................................................................................................60
8.1 UNCONDITIONAL SHUTDOWN ...............................................................................................................................................61
9USB PORT ................................................................................................................................................................62
9.1 USB 2.0 HS DESCRIPTION ...................................................................................................................................................62
10 SPI PORT .................................................................................................................................................................63
10.1 SPI CONNECTIONS............................................................................................................................................................64
11 USB HSIC .................................................................................................................................................................65
12 SERIAL PORTS..........................................................................................................................................................66
12.1 MODEM SERIAL PORT 1(USIF0) ...................................................................................................................................67
12.2 MODEM SERIAL PORT 2(USIF1) ...................................................................................................................................69
12.3 RS232 LEVEL TRANSLATION................................................................................................................................................70
13 AUDIO SECTION OVERVIEW ....................................................................................................................................72
13.1 ELECTRICAL CHARACTERISTICS .............................................................................................................................................72
13.1.1 CODEC Examples ..................................................................................................................................................72
14 GENERAL PURPOSE I/O ...........................................................................................................................................73
14.1 GPIO LOGIC LEVELS ..........................................................................................................................................................74
14.2 USING A GPIO PAD AS INPUT ...........................................................................................................................................75
14.3 USING A GPIO PAD AS OUTPUT........................................................................................................................................75
14.4 INDICATION OF NETWORK SERVICE AVAILABILITY .....................................................................................................................76
14.5 RTC BYPASS OUT .............................................................................................................................................................77
14.6 EXTERNAL SIM HOLDER IMPLEMENTATION ...........................................................................................................................77
14.7 VAUX POWER OUTPUT.....................................................................................................................................................77
14.8 ADC CONVERTER .............................................................................................................................................................78
14.8.1 Description ...........................................................................................................................................................78
14.8.2 Using ADC Converter ............................................................................................................................................78
15 MOUNTING THE HE910 ON THE APPLICATION ........................................................................................................ 79
15.1 GENERAL ........................................................................................................................................................................79
15.2 MODULE FINISHING &DIMENSIONS .....................................................................................................................................79
15.3 RECOMMENDED FOOT PRINT FOR THE APPLICATION.................................................................................................................81
15.4 STENCIL ..........................................................................................................................................................................82

HE910 Hardware User Guide
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15.5 PCB PAD DESIGN..............................................................................................................................................................82
15.6 PCB PAD DIMENSIONS.......................................................................................................................................................83
15.7 SOLDER PASTE..................................................................................................................................................................85
15.7.1 HE910 Solder reflow .............................................................................................................................................85
15.8 PACKING SYSTEM (TRAY)....................................................................................................................................................87
15.9 PACKING SYSTEM (REEL)....................................................................................................................................................89
15.9.1 Carrier Tape Detail ...............................................................................................................................................89
15.9.2 Reel Detail ............................................................................................................................................................90
15.9.3 Packaging Detail ..................................................................................................................................................91
15.10 MOISTURE SENSITIVITY ....................................................................................................................................................91
16 SAFETY RECOMMANDATIONS ................................................................................................................................. 92
17 CONFORMITY ASSESSMENT ISSUES.........................................................................................................................93
17.1 1999/5/EC DIRECTIVE .....................................................................................................................................................93
17.2 FCC/IC REGULATORY NOTICES............................................................................................................................................97

HE910 Hardware User Guide
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1Introduction
1.1 Scope
The aim of this document is the description of some hardware solutions useful for developing a
product with the Telit HE910 module.
1.2 Audience
This document is intended for Telit customers, who are integrators, about to implement their
applications using our HE910 modules.
1.3 Contact Information, Support
For general contact, technical support, to report documentation errors and to order manuals,
contact Telit’s Technical Support Center (TTSC) at:
[e-mail]
[e-mail]
[e-mail]
[e-mail]
Alternatively, use:
http://www.telit.com/en/products/technical-support-center/contact.php
For detailed information about where you can buy the Telit modules or for recommendations on
accessories and components visit:
http://www.telit.com
To register for product news and announcements or for product questions contact Telit’s
Technical Support Center (TTSC).
Our aim is to make this guide as helpful as possible. Keep us informed of your comments and
suggestions for improvements.
Telit appreciates feedback from the users of our information.

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1.4 Document Organization
This document contains the following chapters:
Chapter 1: “Introduction” provides a scope for this document, target audience, contact and
support information, and text conventions.
Chapter 2: “Overview” provides an overview of the document.
Chapter3: “HE910 Module Connections” deals with the pin out configuration and layout.
Chapter 4: “Hardware Commands” How to operate on the module via hardware.
Chapter 5: “Power supply” Power supply requirements and general design rules.
Chapter 6: “GSM/WCDMA Radio” The antenna connection and board layout design are the
most important parts in the full product design.
Chapter 7: “GPS Receiver” This section describes the GPS receiver.
Chapter 8: “Logic Level specifications” Specific values adopted in the implementation of logic
levels for this module.
Chapter 9: “USB Port” The USB port on the Telit HE910 is the core of the interface between the
module and OEM hardware
Chapter 10: “SPI port” Refers to the SPI port of the Telit HE910
Chapter 11: “USB HSIC” Refers to the USB HSIC port of the Telit HE910
Chapter 12: “Serial ports” Refers to the serial ports of the Telit HE910
Chapter 13: “Audio Section overview” Refers to the audio blocks of the Base Band Chip of the
HE910 Telit Modules.
Chapter 14: “General Purpose I/O” How the general purpose I/O pads can be configured.
Chapter 15: “Mounting the HE910 on the application board” Mechanical dimensions and
recommendations on how to mount the module on the user’s board.
Chapter 16: “Safety Recommendations” Information related to the Safety topics.
Chapter 17: “Conformity Assessment Issues” Information related to the Conformity
Assessments.

HE910 Hardware User Guide
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1.5 Text Conventions
Danger – This information MUST be followed or catastrophic equipment failure or bodily
injury may occur.
Caution or Warning – Alerts the user to important points about integrating the module, if
these points are not followed, the module and end user equipment may fail or malfunction.
Tip or Information – Provides advice and suggestions that may be useful when integrating
the module.
All dates are in ISO 8601 format, i.e. YYYY-MM-DD.
1.6 Related Documents
•Digital Voice Interface Application Note 80000NT10050A
•SPI Port Application Note 80000NT10053A
•Product description 80378ST10085A
•SIM Holder Design Guides 80000NT10001A
•USB HSIC Port Application Note 80000NT10071A
•AT Commands Reference Guide 80378ST10091A
•Telit EVK2 User Guide 1vv0300704