Telit Wireless Solutions UL865N3G Installation manual

UL865-N3G V2 Hardware User
Guide
1VV0301177 Rev 2– 2015-04-20

UL865-N3G Hardware User Guide
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APPLICABILITY TABLE
PRODUCT
UL865-N3G V2

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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.

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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. 2014

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Contents
1. Introduction ................................................. 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
2. Overview .................................................... 12
3. UL865-N3G V2 Mechanical Dimensions .......................... 13
4. UL865-N3G V2 module connections ............................. 14
4.1. PIN-OUT .................................................. 14
4.2. Debug in Production ...................................... 16
4.3. Pin Layout ............................................... 17
5. Hardware Commands ........................................... 18
5.1. Auto-Turning ON the UL865-N3G V2 ......................... 18
5.2. Turning OFF the UL865-N3G V2 ............................. 21
5.3. Resetting the UL865-N3G V2 ............................... 22
5.3.1. Hardware Unconditional restart ............................. 22
6. Power Supply ................................................ 25
6.1. Power Supply Requirements ................................ 25
6.2. Power Consumption ........................................ 26
6.3. General Design Rules ..................................... 26
6.3.1. Electrical Design Guidelines ............................... 26
6.3.2. Thermal Design Guidelines .................................. 30
6.3.3. Power Supply PCB layout Guidelines ......................... 31
7. Radio Section ............................................... 33
7.5. TX Output Power .......................................... 33
7.6. Sensitivity .............................................. 33

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7.7. Antenna Requirements ..................................... 33
7.7.1. UL865-N3G V2 Antenna – PCB line Guidelines ................. 34
7.8. PCB Guidelines in case of FCC certification .............. 35
7.8.1. Transmission line design ................................... 35
7.8.2. Transmission line measurements ............................. 36
7.9. Antenna - Installation Guidelines ........................ 38
8. Logic level specifications .................................. 39
8.5. Reset signal ............................................. 40
9. USB Port .................................................... 41
9.1. USB 2.0 HS ............................................... 41
10. SPI Port .................................................... 42
10.5. SPI Connections ........................................ 42
11. Serial Ports ................................................ 43
11.1. MODEM SERIAL PORT 1 .................................... 43
11.2. MODEM SERIAL PORT 2 .................................... 45
11.3. RS232 level translation ................................ 46
12. Audio Section Overview ...................................... 48
13. General Purpose I/O ......................................... 48
13.1. GPIO Logic levels ...................................... 50
13.2. Using a GPIO Pad as INPUT .............................. 51
13.3. Using a GPIO Pad as OUTPUT ............................. 51
13.4. Indication of network service availability ............. 52
13.5. SIMIN detect function .................................. 53
13.6. RTC Bypass out ......................................... 53
13.7. SIM Holder Implementation .............................. 53
14. DAC and ADC section ......................................... 54
14.1. DAC Converter .......................................... 54
14.1.1. Description .............................................. 54
14.1.2. Enabling DAC ............................................. 55
14.1.3. Low Pass Filter Example .................................. 55
14.2. ADC Converter .......................................... 56

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14.2.1. Description .............................................. 56
14.2.2. Using ADC Converter ...................................... 56
14.3. VAUX Power Output ...................................... 57
15. Mounting the UL865-N3G V2 on your Board ..................... 58
15.1. General ................................................ 58
15.2. Module finishing & dimensions .......................... 58
15.3. Recommended foot print for the application ............. 59
15.4. Stencil ................................................ 60
15.5. PCB pad design ......................................... 60
15.6. Recommendations for PCB pad dimensions (mm): ........... 61
15.7. Solder paste ........................................... 62
15.8. UL865-N3G V2 Solder reflow ............................. 62
16. Packing system .............................................. 64
16.1. Packing on tray ........................................ 64
16.2. Packing in Reel ........................................ 66
16.3. Moisture sensitivity ................................... 67
17. SAFETY RECOMMANDATIONS ...................................... 68
18. FCC/IC REGULATORY NOTICES ................................... 69

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1. Introduction
1.1. Scope
The aim of this document is the description of some hardware solutions useful for developing
a product with the Telit UL865-N3G V2 module.
1.2. Audience
This document is intended for Telit customers, who are integrators, about to implement their
applications using our UL865-N3G V2 modules.
1.3. Contact Information, Support
For general contact, technical support, to report documentation errors and to order manuals,
contact Telit Technical Support Center (TTSC) at:
[e-mail]
[e-mail]
TS-LATI[email protected]
[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
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.
Chapter 3: “UL865-N3G V2 Mechanical Dimensions”
Chapter 4: “UL865-N3G V2 Module Connections” deals with the pin out configuration and layout.
Chapter 5: “Hardware Commands” How to operate on the module via hardware.
Chapter 6: “Power supply” Power supply requirements and general design rules.
Chapter 7: “GSM/WCDMA Radio Section” The antenna connection and board layout design are the
most important parts in the full product design.
Chapter 8: “Logic Level specifications” Specific values adopted in the implementation of logic levels
for this module.
Chapter 9: “USB ports” The serial port on the Telit UL865-N3G V2 is the core of the interface between
the module and OEM hardware
Chapter 10: “Serial ports” The serial port on the Telit UL865-N3G V2 is the core of the interface
between the module and OEM hardware
Chapter 11: “Audio Section overview”
Chapter 12: “General Purpose I/O” How the general purpose I/O pads can be configured.
Chapter 13 “DAC and ADC Section” Deals with these two kind of converters.
Chapter 14: “Mounting the UL865-N3G V2 on the application board” Recommendations and specifics
on how to mount the module on the user’s board.
Chapter 15: “Packaging system” Recommendations and specifics on how the system is packaged.
Chapter 16: “Conformity Assessment Issues”
Chapter 17: “Safety Recommendations”

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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
 SIM Holder Design Guides 80000NT10001a
 AT Commands Reference Guide 80378ST10091A
 Telit EVK2 User Guide 1vv0300704

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1.7. Document History
Revision Date Changes
Rev 0 2014-10-13 Preliminary Version
Rev.1 2015-04-01 Added par. 17/18
Rev.2 2015-04-20 Updated chapter 12

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2. Overview
The aim of this document is the description of some hardware solutions useful for developing
a product with the Telit UL865-N3G V2 module.
In this document all the basic functions of a mobile phone will be taken into account; for each
one of them a proper hardware solution will be suggested and eventually the wrong solutions
and common errors to be avoided will be evidenced. Obviously this document cannot
embrace all hardware solutions and products that may be designed. Avoiding the wrong
solutions shall be considered as mandatory. While the suggested hardware configurations
shall not be considered mandatory, the information given shall be used as a guide and a
starting point for properly developing your product with the Telit UL865-N3G V2 module.
For further hardware details that may not be explained in this document refer to the Telit
UL865-N3G V2 Product Description document where all the hardware information is
reported.
NOTICE:
(EN) The integration of the GSM/GPRS/WCDMA UL865-N3G V2 cellular module within user
application shall be done according to the design rules described in this manual.
(IT) L’integrazione del modulo cellulare GSM/GPRS/WCDMA UL865-N3G V2 all’interno
dell’applicazione dell’utente dovrà rispettare le indicazioni progettuali descritte in questo manuale.
(DE) Die Integration des UL865-N3G V2 GSM/GPRS/WCDMA Mobilfunk-Moduls in ein Gerät muß
gemäß der in diesem Dokument beschriebenen Kunstruktionsregeln erfolgen.
(SL) Integracija GSM/GPRS/WCDMA UL865-N3G V2 modula v uporabniški aplikaciji bo morala
upoštevati projektna navodila, opisana v tem priročniku.
(SP) La utilización del modulo GSM/GPRS/WCDMA UL865-N3G V2 debe ser conforme a los usos
para los cuales ha sido deseñado descritos en este manual del usuario.
(FR) L’intégration du module cellulaire GSM/GPRS/WCDMA UL865-N3G V2 dans l’application de
l’utilisateur sera faite selon les règles de conception décrites dans ce manuel.
(HE)
The information presented in this document is believed to be accurate and reliable. However,
no responsibility is assumed by Telit Communications S.p.A. for its use, nor any infringement
of patents or other rights of third parties which may result from its use. No license is granted
by implication or otherwise under any patent rights of Telit Communications S.p.A. other
than for circuitry embodied in Telit products. This document is subject to change without
notice.
UL865-N3G V2

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3. UL865-N3G V2 Mechanical Dimensions
The UL865-N3G V2 overall dimensions are:
Length: 24.4 mm
Width: 24.4 mm
Thickness: 2.6 mm
Weight 4 g

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4. UL865-N3G V2 module connections
4.1. PIN-OUT
Pad Signal I/O
Function Note Type
Audio
18 USB_D+ I/O USB differential Data (+)
17 USB_D- I/O USB differential Data (-)
16 USB_VBUS AI Power sense for the internal USB transceiver.
SIM card interface
9 SIMVCC - External SIM signal – Power supply for the SIM 1,8 / 3V
10 SIMRST O External SIM signal – Reset 1,8 / 3V
11 SIMCLK O External SIM signal – Clock 1,8 / 3V
12 SIMIO I/O External SIM signal – Data I/O 4.7k Pull up
1,8 / 3V
X
All GPI0
can be
program
med
SIMIN I Presence SIM input CMOS 1.8V
Auxiliary
44 RXD_AUX
/SPI_MISO
I
O
Auxiliary UART (RX Data)
SPI_MISO CMOS 1.8V
45 TXD_AUX /
SPI_MOSI
O
I
Auxiliary UART (TX Data)
SPI_MOSI CMOS 1.8V
Prog. / Data + HW Flow Control
1 C109/DCD/GPO O Output for Data carrier detect signal (DCD) to DTE
/ GP output CMOS 1.8V
2 C125/RING/GPO O Output for Ring indicator signal (RI) to DTE
/ GP output CMOS 1.8V
3 C107/DSR/GPO O Output for Data set ready signal (DSR) to DTE
/ GP output CMOS 1.8V
4 C108/DTR/GPI I Input for Data terminal ready signal (DTR) from DTE
/ GP input CMOS 1.8V
5 C105/RTS/GPI I Input for Request to send signal (RTS) from DTE
/ GP input CMOS 1.8V
6 C106/CTS/GPO O Output for Clear to send signal (CTS) to DTE
/ GP output CMOS 1.8V
7 C103/TXD I Serial data input (TXD) from DTE CMOS 1.8V
8 C104/RXD O Serial data output to DTE CMOS 1.8V
DAC and ADC
13 ADC_IN1 AI Analog/Digital converter input
Accepted
values 0 to
1.2V DC
A/D
14 ADC_IN2 AI Analog/Digital converter input
Accepted
values 0 to
1.2V DC
A/D
15 DAC_OUT AO
Digital/Analog converter output D/A
Miscellaneous Functions
30 VRTC AO
backup for the embedded RTC supply (1.8V) Power
47 RESET* I Reset Input CMOS 1.8V
43 V_AUX / PWRMON O 1.8V stabilized output Imax=100mA
/ Power ON monitor Power Out 1.8V

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Pad Signal I/O
Function Note Type
34 Antenna I/O Antenna pad – 50 Ω RF
GPIO
42 GPIO_01 / DVI_WA0 I/O GPIO01 Configurable GPIO
/ Digital Audio Interface (WA0) CMOS 1.8V
41 GPIO_02 / JDR /
DVI_RX I/O
GPIO02 I/O pin
/ Jammer Detect Report
/ Digital Audio Interface (RX)
CMOS 1.8V
40 GPIO_03 / DVI_TX I/O GPIO03 GPIO I/O pin
/ Digital Audio Interface (TX) CMOS 1.8V
39 GPIO_04 / DVI_CLK I/O GPIO04 Configurable GPIO
Digital Audio Interface (CLK) CMOS 1.8V
29 GPIO_05 I/O GPIO05 Configurable GPIO CMOS 1.8V
28 GPIO_06 / SPI_SRDY I/O GPIO06 Configurable GPIO
/ ALARM / SPI_SRDY CMOS 1.8V
27 GPIO_07 / SPI_MRDY
I/O GPIO07 Configurable GPIO
/ Buzzer / SPI_MRDY CMOS 1.8V
26 GPIO_08 / STAT_LED
I/O GPIO08 Configurable GPIO
/ Digital Audio Interface (CLK) CMOS 1.8V
25 SPI_CLK I/O SPI_CLK CMOS 1.8V
Power Supply
38 VBATT - Main power supply (Baseband) Power
37 VBATT_PA - Main power supply (Radio PA) Power
23 AGND - AF Signal Ground (see audio section) AF Signal
32 GND - Ground Power
33 GND - Ground Power
35 GND - Ground Power
36 GND - Ground Power
46 GND - Ground Power
23 GND - Ground -
RESERVED
19 -
20 -
21 -
22 -
24 -
31 -
48 -
WARNING:
Reserved pins must not be connected.

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NOTE:
If not used, almost all pins should be left disconnected. The only exceptions are the
following pins:
4.2. Debug in Production
To test and debug the assembled UL865-N3G V2, we strongly recommend foreseeing test
pads on the host PCB, in order to check the connection between the UL865-N3G V2 itself and
the application and to test the performance of the module connecting it with an external
computer. Depending by the customer application, these pads include, but are not limited to
the following signals:
TXD
RXD
RESET*
GND
VBATT
VBATT_PA
TX_AUX
RX_AUX
PWRMON
Pin signal
38, 37 VBATT & VBATT_PA
32, 33, 35, 36, 46 GND
23 AGND
7 C103/TXD If not used should be connected to a Test Point
8 C104/RXD If not used should be connected to a Test Point
5 C105/RTS If not used should be connected to a Test Point
6 C106/CTS If not used should be connected to a Test Point
43 V_AUX / PWRMON
47 RESET*
45 TXD_AUX If not used should be connected to a Test Point
44 RXD_AUX If not used should be connected to a Test Point
18 USB D+ If not used should be connected to a Test Point or
an USB connector
17 USB D- If not used should be connected to a Test Point or
an USB connector
16 USB_VBUS If not used should be connected to a Test Point or
an USB connector

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4.3. Pin Layout
TOP VIEW
NOTE:
The pins defined as NC/RFU shall be considered RESERVED and must not be connected
to any pin in the application.

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5. Hardware Commands
5.1. Auto-Turning ON the UL865-N3G V2
The UL865-N3G V2 will automatically power on itself when VBATT & VBATT_PA are
applied to the module.
V_AUX / PWRMON pin will be at the high logic level and the module can be considered
fully operating after 5 seconds.
The following flow chart shows the proper turn on procedure:
Modem ON Proc.
PWR supply ON
and >3.22V?
Y
Delay 1s - 5s for Low
Voltage Operating
Y
Modem Reset Proc.
AT init sequence.
N
Start AT CMD.
N
PWMON = ON?
Y
PWMON = ON?
Delay 300mS
Enter AT<CR>
AT answer in
1second ?
N
Y
N
Delay 1s

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NOTE:
The power supply must be applied either at the same time on pins VBATT and
VBATT_PA.
NOTE:
To guarantee a correct module’s start-up please check that the Power Supply is with a
level >3.22V within 21mS.
NOTE:
In order to prevent a back powering effect it is recommended to avoid having any HIGH
logic level signal applied to the digital pins of the UL865-N3G V2 when the module is
powered OFF or during an ON/OFF transition.

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A flow chart showing the AT commands managing procedure is displayed below:
Modem ON Proc.
Disconnect PWR supply
AT init sequence.
Delay 300mS
Enter AT<CR>
AT answer in
1second?
Y
N
Start AT CMD.