Telit Wireless Solutions UE866-N3G, UE866-EU Hardware User's Manual

UE866 HARDWARE USER GUIDE 1vv0301157 Rev.12 • 2017-02-10 1 of 70

UE866 HARDWARE USER GUIDE

UE866 HARDWARE USER GUIDE 1vv0301157 Rev.12 • 2017-02-10 2 of 70

APPLICABILITY TAB L E

PRODUCTS

UE866-N3G

UE866-EU

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DISCLAIMER

LEGAL NOTICE

These Specifications are general guidelines pertaining to product selection and application and may not be appropriate for your particular project. Telit (which hereinafter shall include, its agents, licensors and affiliated companies) makes no representation as to the particular products identified in this document and makes no endorsement of any product. Telit disclaims any warranties, expressed or implied, relating to these specifications, including without limitation, warranties or merchantability, fitness for a particular purpose or satisfactory quality. Without limitation, Telit reserves the right to make changes to any products described herein and to remove any product, without notice. It is possible that this document may contain references to, or information about Telit products, services and programs, that are not available in your region. Such references or information must not be construed to mean that Telit intends to make available such products, services and programs in your area.

USE AND INTELLECTUAL PROPERTY RIGHTS

These Specifications (and the products and services contained herein) are proprietary to Telit and its licensors and constitute the intellectual property of Telit (and its licensors). All title and intellectual property rights in and to the Specifications (and the products and services contained herein) is owned exclusively by Telit and its licensors. Other than as expressly set forth herein, no license or other rights in or to the Specifications and intellectual property rights related thereto are granted to you. Nothing in these Specifications shall, or shall be deemed to, convey license or any other right under Telit’s patents, copyright, mask work or other intellectual property rights or the rights of others.

You may not, without the express written permission of Telit: (i) copy, reproduce, create derivative works of, reverse engineer, disassemble, decompile, distribute, merge or modify in any manner these Specifications or the products and components described herein; (ii) separate any component part of the products described herein, or separately use any component part thereof on any equipment, machinery, hardware or system; (iii) remove or destroy any proprietary marking or legends placed upon or contained within the products or their components or these Specifications; (iv) develop methods to enable unauthorized parties to use the products or their components; and (v) attempt to reconstruct or discover any source code, underlying ideas, algorithms, file formats or programming or interoperability interfaces of the products or their components by any means whatsoever. No part of these Specifications or any products or components described herein 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 the prior express written permission of Telit.

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HIGH RISK MATERIALS

Components, units, or third-party products contained or used with the products 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, its licensors and its supplier(s) specifically disclaim any expressed or implied warranty of fitness for such High Risk Activities.

TRADEMARKS

You may not and may not allow others to use Telit or its third party licensors’ trademarks. To the extent that any portion of the products, components and any accompanying documents contain proprietary and confidential notices or legends, you will not remove such notices or legends.

THIRD PARTY RIGHTS

The software may include Third Party Right software. In this case you agree to comply with all terms and conditions imposed on you in respect of such separate software. In addition to Third Party Terms, the disclaimer of warranty and limitation of liability provisions in this License shall apply to the Third Party Right software.

TELIT HEREBY DISCLAIMS ANY AND ALL WARRANTIES EXPRESS OR IMPLIED FROM ANY THIRD PARTIES REGARDING ANY SEPARATE FILES, ANY THIRD PARTY MATERIALS INCLUDED IN THE SOFTWARE, ANY THIRD PARTY MATERIALS FROM WHICH THE SOFTWARE IS DERIVED (COLLECTIVELY “OTHER CODE”), AND THE USE OF ANY OR ALL THE OTHER CODE IN CONNECTION WITH THE SOFTWARE, INCLUDING (WITHOUT LIMITATION) ANY WARRANTIES OF SATISFACTORY QUALITY OR FITNESS FOR A PARTICULAR PURPOSE.

NO THIRD PARTY LICENSORS OF OTHER CODE SHALL HAVE ANY LIABILITY FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND WHETHER MADE UNDER CONTRACT, TORT OR OTHER LEGAL THEORY, ARISING IN ANY WAY OUT OF THE USE OR DISTRIBUTION OF THE OTHER CODE OR THE EXERCISE OF ANY RIGHTS GRANTED UNDER EITHER OR BOTH THIS LICENSE AND THE LEGAL TERMS APPLICABLE TO ANY SEPARATE FILES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

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CONTENTS

1 Introduction 8

1.1 Scope 8

1.2 Audience 8

1.3 Contact Information, Support 8

1.4 List of acronyms 9

1.5 Text Conventions 10

1.6. Related Documents 10

2 Overview 11 3 Pins Allocation 12

3.1 Pin-out 12

LGA Pads Layout 16

4 Power Supply 17

4.1 Power Su pp l y Requirements 17

4.2 Power Consumption 18

4.3 General Design Rules 19

Electrical Design Guidelines 19

+5V Source Power Supply Design Guidelines 19 + 12V input Source Power Supply Design Guidelines 20 Battery Source Power Supply Design Guidelines 21 Thermal Design Guidelines 22 Power Supply PCB layout Guidelines 23

4.4 RTC Bypass out 24

4.5 VAUX Power Output 24

5 Digital Section 25

5.1 Logic Levels Specification 25

5.2 Power on 26

5.3 Power off 29

5.4 Reset 30

5.5 Communication ports 33

USB 2.0 HS 33 SPI 34

SPI Connections 34

Serial Ports 35

MODEM SERIAL PORT 1 (USIF0) 35

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MODEM SERIAL PORT 2 (USIF1) 37 RS232 LEVEL TRANSLATION 38

5.6 General Purpose I/O 39

Using a GPIO as INPUT 40 Using a GPIO as OUTPUT 40 Indication of network service availability 41 SIMIN Detection 42

5.7 External SIM Holder 42

5.8 ADC Converter 43

5.9 DAC Converter 44

Enabling DAC 44 LOW Pass filter Example 45

6 RF Section 46

6.1 Bands Variants 46

6.2 TX Output Power 46

6.3 RX Sensitivity 47

6.4 Antenna Requirements 48

PCB design guidelines 48 PCB Guidelines in case of FCC Certification 50

Transmission line design 50 Transmission Line Measurements 51 Antenna Installation Guidelines 54

7 Audio Section 55

7.1 Overview 55

7.2 Digital Voice Inter f ac e 55

CODEC Examples 55

8 Mechanical Design 56

8.1 Drawing 56

9 Application Design 57

9.1 Footprint 57

9.2 PCB pad design 58

9.3 PCB pad dimensions 58

9.4 Stencil 60

9.5 Solder paste 60

9.6 Solder reflow 60

10 Packaging 62

10.1 Tray 62

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10.2 Moisture sensitivity 64

11 SAFETY RECOMMANDATIONS 65 12 FCC/IC Regulatory notices 66 13 Document History 69

13.1 Revisions 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 UE866 module.

1.2 Audience

This document is intended for Telit customers, who are integrators, about to implement their applications using our UE866 modules.

1.3 C ontact Informat ion, Support

For general contact, technical support services, technical questions and report documentation errors contact Telit Technical Support at:

TS-EMEA@telit.com TS-AMERICAS@telit.com TS-APAC@telit.com

Alternatively, use:

http://www.telit.com/support

For detailed information about where you can buy the Telit modules or for recommendations on accessories and components visit:

http://www.telit.com

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 Li s t of acronyms

Acronym

Description

TTSC

Telit Technical Support Centre

USB

Universal Serial Bus

HS

High Speed

DTE

Data Terminal Equipment

UMTS

Universal Mobile Telec ommunication System

WCDMA

Wideband Code Division Multiple Access

HSDPA

High Speed Downlink Packet Access

HSUPA

High Speed Uplink Packet Access

UART

Universal Asynchronous Receiver Transmitter

HSIC

High Speed Inter Chip

SIM

Subscriber Identification Module

SPI

Serial Peripheral Interface

ADC

Analog – Digital Converter

DAC

Digital – Analog Converter

I/O

Input Output

GPIO

General Purpose Input Output

CMOS

Complementary Metal – Oxide Semiconductor

MOSI

Master Output – Slave Input

MISO

Master Input – Slave Output

CLK

Clock

MRDY

Master Ready

SRDY

Slave Ready

CS

Chip Select

RTC

Real Time Clock

PCB

Printed Circuit Board

ESR

Equivalent Series Resistance

VSWR

Voltage Standing Wave Radio

VNA

Vector Network Analyzer

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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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2 OVERVIEW

The aim of this document is the description of some hardware solutions useful for developing a product with the Telit UE866 module. In this document all the bas ic functions of a mobile phone will be taken into account; for each one of them a proper hardware s olution will be suggested a nd eventually the wrong solut ions and common errors to be avoided wil l be evidenc ed. Obviousl y this docum ent cannot em brace the whole h ardware solutions and products that may be designed. T he wrong solutions to be avoided shall be consi dered as mandatory, while the suggested hardware configurations shall not be considered mandatory, instead the information given shall be used as a guide and a starting point for properly developing your product with the Telit UE866 module. F or further hard ware details that m ay not be explai ned in this docum ent refer to the Telit UE866 Product Description document where all the hardware information is reported.

NOTICE:

(EN) The integration of the WCDMA UE866 cellular m odu le with in user application shall be done according to the design rules described in this manual.

(IT) L’integrazione del modulo cellulare WCDMA UE866 all’interno dell’applicazione dell’utente dovrà rispettare le indicazioni progettuali descritte in questo manuale.

(DE) Die Integration des UE866 WCDMA Mobilfunk-Moduls in ein Gerät muß gemäß der in diesem Dokument beschriebenen Kunstruktionsregeln erfolgen.

(SL) Integracija WCDMA UE866 modula v uporabniški aplikaciji bo morala upoštevati projektna navodila, opisana v tem priročniku.

(SP) La utilización del modulo WCDMA UE866 debe ser conforme a los usos para los cuales ha sido deseñado descritos en este manual del usuario.

(FR) L’intégration du module cellulaire WCDMA UE866 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 an y patent rights of Telit Comm unications S.p.A. ot her than for c ircuitry embodi ed in Telit products. This document is subject to change without notice.

UE866

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3 PINS ALLOCATION

3.1 Pin-out

Signal

I/O

Function

Type

Comment

USB HS 2.0 COMMUNICATION PORT

E5

USB_D+

I/O

USB differential Data (+)

-

E6

USB_D-

I/O

USB differential Data (-)

-

D4

USB_VBUS AI

Power sense for the internal USB transceiver.

-

Asynchronous Serial Port (USIF0) - Prog. / Data + HW Flow Control

B2

C109/DCD O

Output for Data carrier detect signal (DCD) to DTE

CMOS 1.8V

B3

C125/RING O

Output for Ring indicator signal (RI) to DTE

CMOS 1.8V

A3

C107/DSR O

Output for Data set ready signal (DSR) to DTE

CMOS 1.8V

A2

C108/DTR I

Input for Data terminal ready signal (DTR) from DTE

CMOS 1.8V

A1

C105/RTS I

Input for Request to send signal (RTS) from DTE

CMOS 1.8V

B1

C106/CTS O

Output for Clear to send signal (CTS) to DTE

CMOS 1.8V

A4

C103/TXD I

Serial data input (TXD) from DTE

CMOS 1.8V

A5

C104/RXD

O

Serial data output to DTE

CMOS 1.8V

Asynchronous Auxiliary Serial Port (USIF1)

C2

RXD_AUX /SPI_MISO

I O Auxiliary UART (RX Data)

SPI_MISO

CMOS 1.8V

C1

TXD_AUX / SPI_MOSI

O I Auxiliary UART (TX Data)

SPI_MOSI

CMOS 1.8V

SIM card interface

C7

SIMVCC -

External SIM signal – Power supply for the SIM

1.8 / 3V

B7

SIMRST

O

External SIM signal – Reset

1.8 / 3V

A7

SIMCLK

O

External SIM signal – Clock

1.8 / 3V

A6

SIMIO

I/O

External SIM signal – Data I/O

CMOS 1.8

X

SIMIN

I

Presence SIM input

1.8 / 3V

All GPI0 can be used

DIGITAL IO

C5

GPIO_01 / DVI_WA0

I/O

GPIO01 Configurable GPIO

CMOS 1.8V

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/ Digital Audio Interface (WA0)

C6

GPIO_02 / JDR / DVI_ R X I/O

GPIO02 I/O pin

/ Jammer Detect Report

/ Digital Audio Interface (RX)

CMOS 1.8V

D6

GPIO_03 / DVI_TX I/O

GPIO03 GPIO I/O pin / Digital Audio Interface (TX)

CMOS 1.8V

D5

GPIO_04 / DVI_CLK I/O

GPIO04 Configurable GPIO

Digital Audio Interface (CLK)

CMOS 1.8V

B5

GPIO_05

I/O

GPIO05 Configurable GPIO

CMOS 1.8V

B4

GPIO_06 I/O

GPIO06 Configurable GPIO / ALARM

CMOS 1.8V

C4

GPIO_07 I/O

GPIO07 Configurable GPIO / STATLED

CMOS 1.8V

Alternate Function STAT LED

F11

SPI_CLK

I/O

SPI_CLK

CMOS 1.8V

E11

SPI_SRDY

I/O

SPI_SRDY

CMOS 1.8V

D11

SPI_MRDY

I/O

SPI_MRDY

CMOS 1.8V

ADC and DAC

F4

ADC_IN1 AI Analog/Digital converter input A/D

Accepted values 0 to 1.2V DC

E4

DAC_OUT AO

Digital/Analog converter output

D/A

RF SECTION

G2

Antenna

I/O

Antenna pad – 50 Ω

RF

Miscellaneous Functions

F5

VRTC AO

backup for the embedded RTC supply (1.8V)

-

G4

RESET*

I

Reset Input

CMOS 1.8V

G6

VAUX / PWR MON O

1.8V stabilized output

Imax=100mA

/ Power ON monitor

Power

Power Supply

E2

VBATT -

Main power supply (Baseband)

Power

E1

VBATT_PA

-

Main power supply (Radio PA)

Power

D1

GND

-

Ground

Power

F1

GND

-

Ground

Power

G1

GND

-

Ground

Power

D2

GND

-

Ground

Power

F2

GND

-

Ground

Power

C3

GND

-

Ground

Power

E3

GND

-

Ground

Power

F3

GND

-

Ground

Power

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G3

GND

-

Ground

Power

F6

GND

-

Ground

Power

A8

GND

-

Ground

Power

G8

GND

-

Ground

Power

A11

GND

-

Ground

Power

G11

GND

-

Ground

Power

RESERVED

D3

RESERVED

-

RESERVED

G5

RESERVED

-

RESERVED

B6

RESERVED

-

RESERVED

D7

RESERVED

-

RESERVED

E7

RESERVED

-

RESERVED

F7

RESERVED

-

RESERVED

G7

RESERVED

-

RESERVED

B8

RESERVED

-

RESERVED

C8

RESERVED

-

RESERVED

D8

RESERVED

-

RESERVED

E8

RESERVED

-

RESERVED

F8

RESERVED

-

RESERVED

A9

RESERVED

-

RESERVED

B9

RESERVED

-

RESERVED

C9

RESERVED

-

RESERVED

D9

RESERVED

-

RESERVED

E9

RESERVED

-

RESERVED

F9

RESERVED

-

RESERVED

G9

RESERVED

-

RESERVED

A10

RESERVED

-

RESERVED

B10

RESERVED

-

RESERVED

C10

RESERVED

-

RESERVED

D10

RESERVED

-

RESERVED

E10

RESERVED

-

RESERVED

F10

RESERVED

-

RESERVED

G10

RESERVED

-

RESERVED

B11

RESERVED

-

RESERVED

C11

RESERVED

-

RESERVED

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WARNING: Reserved pins must not be connected

If not used, almost all pins should be left disconnected. The only exceptions are the following pins:

PAD

Signal

Note

E2

VBATT

E1

VBATT_PA

D1, F1, G1, D2, F2, C3, E3,

F3, G3, F6, A8, G8, A11,

G11

GND

G2

Antenna

A4

C103/TXD

If not used should be connected to a Test Point

A5

C104/RXD If not used should be connected to a Test Point

A1

C105/RTS

If not used should be connected to a Test Point

B1

C106/CTS

If not used should be connected to a Test Point

G6

VAUX / PWR MON

G4

RESET*

C1

TXD_AUX

If not used should be connected to a Test Point

C2

RXD_AUX

If not used should be connected to a Test Point

E5

USB D+

If not used should be connected to a Test Point or an USB connector

E6

USB D-

If not used should be connected to a Test Point or an USB connector

D4

USB_VBUS

If not used should be connected to a Test Point or an USB connector

C7

SIMVCC

B7

SIMRST

A7

SIMCLK

A6

SIMIO

RTS pin should be connected to the GND (on the module side) if flow control is not used. The above pins are also necessary to debug the application when the module is assembled on it so we recommend connecting them also to dedicated test point.

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LGA Pads Layout

TOP VIEW

A B C D E F G

1

C105/RTS C106/CTS TX AUX GND VBATT_PA GND GND

2

C108/DTR C109/DCD RX AUX GND VBATT GND ANT

3

C107/DSR C125/RING GND RFU GND GND GND

4

C103/TXD GPIO_06 GPIO_07 USB_VBUS DAC_OUT ADC_IN1 RESET*

5

C104/RXD GPIO_05 GPIO_01 GPIO_04 USB_D+ VRTC

RESERVED

6

SIMIO

RESERVED

GPIO_02 GPIO_03 USB_D- GND

VAUX/PWR

MON

7

SIMCLK SIMRST SIMVCC

RESERVED RESERVED RESERVED RESERVED

8

GND

RESERVED

RFU RFU RFU RFU GND

9 RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED

10 RESERVED RESERVED RESERVED RESERVED

RFU

RESERVED RESERVED

11

GND

RESERVED RESERVED

SPI_MRDY SPI_SRDY SPI_CLK GND

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4 POWER SUPPLY

The power supply circuitry and board layout are a very important part in the full product design and they strongly reflect on the product overall performances, hence read carefully the requirements and the guidelines that will follow for a proper design.

4.1 Power Supply Requir ements

The external power supply must be connected to VBATT & VBATT_PA signals and must fulfil the following requirements:

Power Supply

Value

Nominal Supply Voltage

3.8V

Normal Operating Voltage Range

3.40 V÷ 4.20 V

Extended Operating Voltage Range

3.10 V÷ 4.50 V

NOTE: The Operating Voltage Range MUST never be exceeded; care must be taken when designing the application’s power supply section to avoid having an excessive voltage drop. If the voltage drop is exceeding the limits it could cause a Power Off of the module. The Power supply must be higher than 3.22 V to power on the module

Overshoot voltage (regarding MAX Extended Operating Voltage) and drop in voltage (regarding MIN Extended Operating Voltage) MUST never be exceeded; The “Extended Operating Voltage Range” can be used only with completely assumption and application of the HW User guide suggestions.

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4.2 Power Consumpti on

Mode

Average (mA)

Mode Description

Switched OFF

180uA

Module supplied but Switched Off

Idle mode (GSM/EDGE)

AT+CFUN=1

19

Normal mode: full functionality of the module

AT+CFUN=4

16.5

Module is not registered on the network

AT+CFUN=5

1.2

Full functionality with power saving; DRX9 (1.3mA in case of DRX5).

Operative mode (GSM)

CSD TX and RX Mode

GSM Voice Call

GSM 850/900 CSD PL5

220

DCS1800/ PCS1900 CSD PL0

167

GPRS 4TX+ 1RX

GPRS Sending Data Mode

GSM 850/900 PL5

580

DCS1800/ PCS1900 PL0

438

Idle mode (WCDMA)

AT+CFUN=1

19

Normal mode: full functionality of the module

AT+CFUN=5

1.6 mA

Disabled TX and RX; DRX7

Operative mode (WCDMA)

WCDMA Voice

175

WCDMA voice call (TX = 10dBm)

WCDMA HSDPA (22dBm)

490

WCDMA data call (Cat 8, TX = 22dBm)

NOTE: The electrical design for the Power supply should be made ensuring it will be capable of a peak current output of at least 1 A.

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4.3 General Design Rules

The principal guidelines for the Power Supply Design embrace three different design steps:

• the electrical design

• the thermal design

• the PCB layout.

Ele c trical Design Guidelines

The electrical des ign of th e po w er s u pply depends str ong l y from the power so urc e wher e th is p o wer is drained. We will distinguish them into three categories:

• +5V input (typically PC internal regulator output)

• +12V input (typically automoti ve)

• Battery

+5V Source Power Supply Design Guidelines

• The desired output for the power supply is 3.8V, hence there's not a big difference between the input source and the d esired output and a linear reg ulator can be used. A switching po wer supply will not be suited because of the low drop out requirements.

• When using a linear regulator, a proper heat sink shall be prov ided in order to diss ipate the power generated.

• A Bypass low ESR capac it or of adeq uate c a pac i t y m ust be pro vi ded in order t o c ut the c urr ent absorption peaks close to the Module, a 100μF capacitor is usually suited.

• Make sure the low ESR capacitor on the power supply output rated at least 10V.

• A protection diode sh ould be inserted close to the p ower input, in order to save th e UE866

from power polarity inversion. This can be the same diode as for spike protection.

An example of linear regulator with 5V input is:

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+ 12V input Source Power Supply Design

Guidelines

• The desired output for the power su pply is 3.8V, hence due to the big diff erence between t he input source and the des ired output, a linear regula tor is not suited and shal l not be used. A switching power supply will be preferable because of its better efficiency.

• When using a switching regulator, a 500kHz or more switching frequency regulator is preferable because of its smaller ind uc tor si ze and its f aster transient res pons e. This allows the regu lator to respond quickly to the current peaks absorption.

• In any case the f requency and Switching des ign selection is related to the application to be developed due to the fact the switching frequency could also generate EMC interferences.

• For car PB battery the input voltage c an r ise u p to 15 ,8V and this should be kept i n m ind when choosing components: all components in the power supply must withstand this voltage.

• A Bypass low ESR capac it or of adeq uate c a pac i t y m ust be pro vi ded in order t o c ut the c urr ent absorption peaks, a 100μF capacitor is usually suited.

• Make sure the low ESR capacitor on the power supply output is rated at least 10V.

• For Car applications a spike protection diode should be inser ted close to the power input, in

order to clean the supply from spikes.

• A protection diode sh ould be inserted close to the p ower input, in order to save th e UE866 from power polarity inversion. This can be the same diode as for spike protection.

An example of switching regulator with 12V input is in the below schematic:

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Battery Source Power Supply Design Guidelines

The desired nom inal output for the po wer supply is 3.8V an d the maximum voltage allowed is 4.2V , hence a single 3.7V Li-Ion cell battery type is suited for supplying the power to the Telit UE866 module.

• A Bypass low ESR capacitor of adequate capacity must be provided in order to cut the current absorption peaks, a 100μF tantalum capacitor is usually suited.

• Make sure the low ESR capacitor (usually a tantalum one) is rated at least 10V.

• A protection diode should be inserted close to the power input, in order to save the UE866 from

power polarity invers ion. Otherwise the battery connec tor should be done in a way to avo id polarity inversions when connecting the battery.

• The battery capac ity must be at least 500mAh in order to withstand the cur rent peaks of 2A; the suggested capacity is from 500mAh to 1000mAh.

WARNING: The three cells Ni/Cd or Ni/MH 3,6 V Nom. battery types or 4V PB types MUST NOT BE USED DIRECTLY since their maximum voltage can rise over the absolute maximum voltage for the UE866 and damage it.

NOTE: DON'T USE any Ni-Cd, Ni-MH, and Pb battery types directly connected with UE866. Their use can lead to overvoltage on the UE866 and damage it. USE ONLY Li-Ion battery types.

Telit Wireless Solutions UE866-N3G, UE866-EU Hardware User's Manual

Specifications and Main Features

Frequently Asked Questions

User Manual