Telit Communications S p A UL865NA 2G/3G module User Manual UL865 Hardware User Guide

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Document Title	UL865 Hardware User Guide
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Document Author:	Cristian.Vacchiano@telit.com

UL865 Hardware User Guide
1VV0301050 Rev 2 – 2013-10-09
UL865 Hardware User Guide
1VV0301050 Rev 2 – 2013-10-09
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.
UL865 Hardware User Guide
1VV0301050 Rev 2 – 2013-10-09
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. 2013
UL865 Hardware User Guide
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Contents
UL865 Hardware User Guide
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UL865 Hardware User Guide
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UL865 Hardware User Guide
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The aim of this document is the description of some hardware solutions useful for developing
a product with the Telit UL865 module.
This document is intended for Telit customers, who are integrators, about to implement their
applications using our UL865 modules.
For general contact, technical support, to report documentation errors and to order manuals,
contact Telit Technical Support Center (TTSC) at:
TS-EMEA@telit.com
TS-NORTHAMERICA@telit.com
TS-LATINAMERICA@telit.com
TS-APAC@telit.com
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.
UL865 Hardware User Guide
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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 Mechanical Dimensions”
Chapter 4: “UL865 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 is the core of the interface between the
module and OEM hardware
Chapter 10: “Serial ports” The serial port on the Telit UL865 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 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”
UL865 Hardware User Guide
1VV0301050 Rev 2 – 2013-10-09
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.
Digital Voice Interface Application Note
SPI Port Application Note
SIM Holder Design Guides
AT Commands Reference Guide
Telit EVK2 User Guide
80000NT10050A
80000NT10053A
80000NT10001a
80378ST10091A
1vv0300704
UL865 Hardware User Guide
1VV0301050 Rev 2 – 2013-10-09
Revision
Date
2013-02-21
2013-04-16
2013-08-02
Changes
Preliminary Version
6.2, 7.1, 7.2, 7.2.1, 9.1
2, 3, 5, 6.1, 13.8, 15,6, 15.9, 16.3, added Reel Packaging,
added Conformity Assessment Issues
UL865 Hardware User Guide
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The aim of this document is the description of some hardware solutions useful for developing
a product with the Telit UL865 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 module. For further
hardware details that may not be explained in this document refer to the Telit UL865 Product
Description document where all the hardware information is reported.
NOTICE:
(EN) The integration of the GSM/GPRS/WCDMA UL865 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 all’interno dell’applicazione
dell’utente dovrà rispettare le indicazioni progettuali descritte in questo manuale.
(DE) Die Integration des UL865 GSM/GPRS/WCDMA Mobilfunk-Moduls in ein Gerät muß gemäß
der in diesem Dokument beschriebenen Kunstruktionsregeln erfolgen.
(SL) Integracija GSM/GPRS/WCDMA UL865 modula v uporabniški aplikaciji bo morala upoštevati
projektna navodila, opisana v tem priročniku.
(SP) La utilización del modulo GSM/GPRS/WCDMA UL865 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 dans l’application de
l’utilisateur sera faite selon les règles de conception décrites dans ce manuel.
(HE)
UL865
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 Hardware User Guide
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The UL865 overall dimensions are:
Length:
Width:
Thickness:
Weight
24.4 mm
24.4 mm
2.6 mm
4g
UL865 Hardware User Guide
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Pad
Signal
I/O
Function
Note
Type
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.
SIMVCC
External SIM signal – Power supply for the SIM
1,8 / 3V
10
SIMRST
External SIM signal – Reset
1,8 / 3V
11
SIMCLK
External SIM signal – Clock
12
All GPI0
can be
program
med
SIMIO
I/O
SIMIN
RXD_AUX
/SPI_MISO
TXD_AUX /
SPI_MOSI
C109/DCD/GPO
C125/RING/GPO
C107/DSR/GPO
C108/DTR/GPI
C105/RTS/GPI
C106/CTS/GPO
Audio
SIM card interface
External SIM signal – Data I/O
Presence SIM input
C103/TXD
Auxiliary
Auxiliary UART (RX Data)
SPI_MISO
Auxiliary UART (TX Data)
SPI_MOSI
Prog. / Data + HW Flow Control
Output for Data carrier detect signal (DCD) to DTE
/ GP output
Output for Ring indicator signal (RI) to DTE
/ GP output
Output for Data set ready signal (DSR) to DTE
/ GP output
Input for Data terminal ready signal (DTR) from DTE
/ GP input
Input for Request to send signal (RTS) from DTE
/ GP input
Output for Clear to send signal (CTS) to DTE
/ GP output
Serial data input (TXD) from DTE
C104/RXD
Serial data output to DTE
44
45
1,8 / 3V
4.7k Pull up
1,8 / 3V
CMOS 1.8V
CMOS 1.8V
CMOS 1.8V
CMOS 1.8V
CMOS 1.8V
CMOS 1.8V
CMOS 1.8V
CMOS 1.8V
CMOS 1.8V
CMOS 1.8V
CMOS 1.8V
DAC and ADC
13
ADC_IN1
AI
Analog/Digital converter input
14
ADC_IN2
AI
Analog/Digital converter input
15
DAC_OUT
AO
Digital/Analog converter output
Accepted
values 0 to
1.2V DC
Accepted
values 0 to
1.2V DC
A/D
A/D
D/A
Miscellaneous Functions
30
VRTC
AO
47
RESET*
43
V_AUX / PWRMON
backup for the embedded RTC supply (1.8V)
Reset Input
1.8V stabilized output Imax=100mA
/ Power ON monitor
Power
CMOS 1.8V
Power Out 1.8V
UL865 Hardware User Guide
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Pad
Signal
I/O
Function
34
Antenna
I/O
Antenna pad – 50 Ω
42
GPIO_01 / DVI_WA0
I/O
41
GPIO_02 / JDR /
DVI_RX
I/O
40
GPIO_03 / DVI_TX
I/O
39
GPIO_04 / DVI_CLK
I/O
29
GPIO_05
I/O
28
GPIO_06 / SPI_SRDY
I/O
27
GPIO_07 / SPI_MRDY
I/O
26
GPIO_08 / STAT_LED
I/O
25
SPI_CLK
I/O
GPIO
GPIO01 Configurable GPIO
/ Digital Audio Interface (WA0)
GPIO02 I/O pin
/ Jammer Detect Report
/ Digital Audio Interface (RX)
GPIO03 GPIO I/O pin
/ Digital Audio Interface (TX)
GPIO04 Configurable GPIO
Digital Audio Interface (CLK)
GPIO05 Configurable GPIO
GPIO06 Configurable GPIO
/ ALARM / SPI_SRDY
GPIO07 Configurable GPIO
/ Buzzer / SPI_MRDY
GPIO08 Configurable GPIO
/ Digital Audio Interface (CLK)
SPI_CLK
Note
Type
RF
CMOS 1.8V
CMOS 1.8V
CMOS 1.8V
CMOS 1.8V
CMOS 1.8V
CMOS 1.8V
CMOS 1.8V
CMOS 1.8V
CMOS 1.8V
Power Supply
38
VBATT
Main power supply (Baseband)
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.
Power
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1VV0301050 Rev 2 – 2013-10-09
NOTE:
If not used, almost all pins should be left disconnected. The only exceptions are the
following pins:
Pin
38, 37
32, 33, 35, 36, 46
23
43
47
45
44
signal
VBATT & VBATT_PA
GND
AGND
TXD
RXD
RTS
CTS
V_AUX / PWRMON
RESET*
TXD_AUX
RXD_AUX
To test and debug the assembled UL865, we strongly recommend foreseeing test pads on the
host PCB, in order to check the connection between the UL865 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
UL865 Hardware User Guide
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TOP VIEW
NOTE:
The pins defined as NC/RFU shall be considered RESERVED and must not be connected
to any pin in the application.
UL865 Hardware User Guide
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The UL865 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?
PWMON = ON?
Delay 300mS
Enter AT
AT answer in
1second ?
Delay 1s - 5s for Low
Voltage Operating
PWMON = ON?
Modem Reset Proc.
Delay 1s
Start AT CMD.
AT init sequence.
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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 when the module is powered
OFF or during an ON/OFF transition.
UL865 Hardware User Guide
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A flow chart showing the AT commands managing procedure is displayed below:
Start AT CMD.
Delay 300mS
Enter AT
AT answer in
1second?
Disconnect PWR supply
Modem ON Proc.
AT init sequence.
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The following flow chart shows the proper turnoff procedure:
Modem OFF Proc.
AT#SYSHALT
10s timeout
Disconnect PWR supply
Delay 1.5s
Modem ON Proc.
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 when the module is powered off
or during an ON/OFF transition.
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To unconditionally reboot the UL865, the pad RESET* must be tied low for at least 200
milliseconds and then released.
The maximum current that can be drained from the ON* pad is 0,15 mA.
WARNING:
The hardware unconditional Restart must not be used during normal operation of the
device since it does not detach the device from the network. It shall be kept as an
emergency exit procedure to be done in the rare case that the device gets stuck waiting for
some network or SIM responses.
NOTE:
Do not use any pull up resistor on the RESET* line nor any totem pole digital output.
Using pull up resistor may bring to latch up problems on the UL865 power regulator and
improper functioning of the module.
The line RESET* must be connected only in open collector configuration; the transistor
must be connected as close as possible to the RESET* pin.
TIP:
The unconditional hardware restart must always be implemented on the boards and the
software must use it as an emergency exit procedure.
A simple circuit to do it is:
UL865 Hardware User Guide
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In the following flow chart is detailed the proper restart procedure:
Modem Reset
Proc.
Reset = LOW
Delay 200ms
Reset = HIGH
Delay 1s
Start AT CMD.
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 when the module is powered
OFF or during an ON/OFF transition.
UL865 Hardware User Guide
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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 performance, hence read the
requirements carefully and the guidelines that will follow for a proper design.
The external power supply must be connected to VBATT & VBATT_PA signals and
must fulfill the following requirements:
POWER SUPPLY
Nominal Supply Voltage
Normal Operating Voltage Range
Extended Operating Voltage Range
3.8 V
3.40 V÷ 4.20 V
3.22 V÷ 4.50 V
NOTE:
The Operating Voltage Range MUST never be exceeded; care must be taken in order to
fulfil min/max voltage requirement.
NOTE:
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 complete assumption
and application of the HW User guide suggestions.
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.
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UL865
Mode
Average (mA)
Mode description
SWITCHED OFF
Module supplied but Switched Off
Switched Off
180 uA
IDLE mode (WCDMA)
AT+CFUN=5
1.8
Disabled TX and RX; DRX7
IDLE mode (GSM/EDGE)
AT+CFUN=1
19
Normal mode: full functionality of the module
Disabled TX and RX; module is not registered on the
AT+CFUN=4
16.5
network
AT+CFUN=5
1.2
Disabled TX and RX; DRX9 (1.3mA in case of DRX5)
Operative mode (WCDMA)
WCDMA Voice
152
WCDMA voice call (TX = 10dBm)
WCDMA HSDPA (0dBm)
187
WCDMA data call (Cat 8, TX = 0dBm)
WCDMA HSDPA (22dBm)
494
WCDMA data call (Cat 8, TX = 24dBm)
Operative mode (EDGE)
EDGE 4TX+1RX
GSM 850/900 - G8
495
EDGE Sending data mode
DCS1800/ PCS1900 – G7
484
Operative mode (GSM)
CSD TX and RX mode
GSM 850/900 CSD PL5
220
GSM VOICE CALL
DCS1800/ PCS1900 CSD PL0
167
GPRS 4TX+1RX
GSM 850/900 PL5
580
GPRS Sending data mode
DCS1800/ PCS1900 PL0
438
The GSM system is made in a way that the RF transmission is not continuous, but it is
packed into bursts at a base frequency of approx. 217 Hz, and the relative current peaks
can be as high as about 2A. Therefore the power supply has to be designed to withstand
these current peaks without big voltage drops; this means that both the electrical design
and the board layout must be designed for this current flow. If the layout of the PCB is
not well designed a strong noise floor is generated on the ground and the supply; this will
reflect on all the audio paths producing an audible annoying noise at approx. 217 Hz; if
the voltage drop during the peak current absorption is too much, then the device may even
shutdown as a consequence of the supply voltage drop.
NOTE:
The electrical design for the Power supply should be made ensuring it will be capable of a
peak current output of at least 2 A.
The UL865-EUx variants are supporting EDGE class 33; the NAx variants support EDGE
class 10.
UL865 Hardware User Guide
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The principal guidelines for the Power Supply Design embrace three different design
steps:
the electrical design
the thermal design
the PCB layout.
The electrical design of the power supply depends strongly from the power source where
this power is drained. We will distinguish them into three categories:
+5V input (typically PC internal regulator output)
+12V input (typically automotive)
Battery
The desired output for the power supply is 3.8V, hence there's not a big difference
between the input source and the desired output and a linear regulator can be used. A
switching power supply will not be suited because of the low drop out requirements.
When using a linear regulator, a proper heat sink shall be provided in order to
dissipate the power generated.
A Bypass low ESR capacitor of adequate capacity must be provided in order to cut
the current absorption peaks close to the UL865, a 100μF tantalum capacitor is
usually suited.
Make sure the low ESR capacitor on the power supply output (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
UL865 from power polarity inversion.
UL865 Hardware User Guide
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An example of linear regulator with 5V input is:
The desired output for the power supply is 3.8V, hence due to the big difference
between the input source and the desired output, a linear regulator is not suited and
shall not be used. A switching power supply will be preferable because of its better
efficiency especially with the 2A peak current load represented by the UL865.
When using a switching regulator, a 500kHz or more switching frequency regulator is
preferable because of its smaller inductor size and its faster transient response. This
allows the regulator to respond quickly to the current peaks absorption.
In any case the frequency and Switching design 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 can rise up to 15,8V and this should be kept in
mind when choosing components: all components in the power supply must
withstand this voltage.
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 on the power supply output (usually a tantalum
one) is rated at least 10V.
For Car applications a spike protection diode should be inserted close to the power
input, in order to clean the supply from spikes.
A protection diode should be inserted close to the power input, in order to save the
UL865 from power polarity inversion. This can be the same diode as for spike
protection.
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An example of switching regulator with 12V input is in the below schematic:
UL865 Hardware User Guide
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The desired nominal output for the power supply is 3.8V and 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 UL865 module.
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 UL865 and damage it.
NOTE:
DON'T USE any Ni-Cd, Ni-MH, and Pb battery types directly connected with UL865.
Their use can lead to overvoltage on the UL865 and damage it. USE ONLY Li-Ion
battery types.
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 UL865
from power polarity inversion. Otherwise the battery connector should be done in a way
to avoid polarity inversions when connecting the battery.
The battery capacity must be at least 500mAh in order to withstand the current peaks of
2A; the suggested capacity is from 500mAh to 1000mAh.
UL865 Hardware User Guide
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The thermal design for the power supply heat sink should be done with the following
specifications:
Average current consumption during HSDPA transmission @PWR level max :
800 mA
Average current during idle:
1.8 mA
NOTE:
The average consumption during transmissions depends on the power level at which the
device is requested to transmit by the network. The average current consumption hence varies
significantly.
Considering the very low current during idle, especially if Power Saving function is enabled,
it is possible to consider from the thermal point of view that the device absorbs current
significantly only during calls.
If we assume that the device stays into transmission for short periods of time (let's say few
minutes) and then remains for a quite long time in idle (let's say one hour), then the power
supply has always the time to cool down between the calls and the heat sink could be smaller
than the calculated one for 600mA maximum RMS current, or even could be the simple chip
package (no heat sink).
Moreover in the average network conditions the device is requested to transmit at a lower
power level than the maximum and hence the current consumption will be less than the
600mA, being usually around 150mA.
For these reasons the thermal design is rarely a concern and the simple ground plane where
the power supply chip is placed can be enough to ensure a good thermal condition and avoid
overheating.
For the heat generated by the UL865, you can consider it to be during transmission 1W max
during CSD/VOICE calls and 2W max during class12 GPRS upload.
This generated heat will be mostly conducted to the ground plane under the UL865; you must
ensure that your application can dissipate it.
UL865 Hardware User Guide
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As seen on the electrical design guidelines the power supply shall have a low ESR capacitor
on the output to cut the current peaks and a protection diode on the input to protect the supply
from spikes and polarity inversion. The placement of these components is crucial for the
correct working of the circuitry. A misplaced component can be useless or can even decrease
the power supply performances.
The Bypass low ESR capacitor must be placed close to the Telit UL865 power
input pads or in the case the power supply is a switching type it can be placed
close to the inductor to cut the ripple provided the PCB trace from the capacitor
to the UL865 is wide enough to ensure a dropless connection even during the 2A
current peaks.
The protection diode must be placed close to the input connector where the
power source is drained.
The PCB traces from the input connector to the power regulator IC must be wide
enough to ensure no voltage drops occur when the 2A current peaks are absorbed.
Note that this is not made in order to save power loss but especially to avoid the
voltage drops on the power line at the current peaks frequency of 216 Hz that
will reflect on all the components connected to that supply, introducing the noise
floor at the burst base frequency. For this reason while a voltage drop of 300-400
mV may be acceptable from the power loss point of view, the same voltage drop
may not be acceptable from the noise point of view. If your application doesn't
have audio interface but only uses the data feature of the Telit UL865, then this
noise is not so disturbing and power supply layout design can be more forgiving.
The PCB traces to the UL865 and the Bypass capacitor must be wide enough to
ensure no significant voltage drops occur when the 2A current peaks are
absorbed. This is for the same reason as previous point. Try to keep this trace as
short as possible.
The PCB traces connecting the Switching output to the inductor and the
switching diode must be kept as short as possible by placing the inductor and the
diode very close to the power switching IC (only for switching power supply).
This is done in order to reduce the radiated field (noise) at the switching
frequency (100-500 kHz usually).
The use of a good common ground plane is suggested.
The placement of the power supply on the board should be done in such a way to
guarantee that the high current return paths in the ground plane are not
overlapped to any noise sensitive circuitry as the microphone amplifier/buffer or
earphone amplifier.
The power supply input cables should be kept separate from noise sensitive lines
such as microphone/earphone cables.
UL865 Hardware User Guide
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The following table is listing the main differences between the UL865 variants:
Product
UL865-EUx
UL865-NAx
Supported 2G Bands
GSM 900, DCS1800
GSM 850, PCS 1900
Supported 3G bands
FDD B1, B8
FDD B2, B5
UL865-EUx
Band
GSM 900
DCS1800
EDGE, 900 MHz
EDGE, 1800 MHz
WCDMA FDD B1, B8
Power Class
4 (2W)
1 (1W)
E2 (0.5W)
Class E2 (0.4W)
Class 3 (0.25W)
UL865-NAx
Band
GSM 850
PCS 1900
EDGE, 850 MHz
EDGE, 1900 MHz
WCDMA FDD B2, B5
Power Class
4 (2W)
1 (1W)
E2 (0.5W)
Class E2 (0.4W)
Class 3 (0.25W)
UL865 Hardware User Guide
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The antenna connection and board layout design are the most important aspect in the full
product design as they strongly affect the product overall performances, hence read
carefully and follow the requirements and the guidelines for a proper design.
The antenna and antenna transmission line on PCB for a Telit UL865 device shall fulfill
the following requirements:
Frequency range
Bandwidth (GSM/EDGE)
Bandwidth
(WCDMA)
Impedance
Input power
VSWR absolute max
VSWR recommended
Frequency range
Bandwidth (GSM/EDGE)
Bandwidth
(WCDMA)
Impedance
Input power
VSWR absolute max
VSWR recommended
UL865-EUR & UL865-EUD
Depending by frequency band(s) provided by the network operator, the
customer shall use the most suitable antenna for that/those band(s)
80 MHz in GSM900
170 MHz in DCS 1800
80 MHz in WCDMA Band VIII
250 MHz in WCDMA Band I
50 ohm
> 33dBm(2 W) peak power in GSM
> 24dBm Average power in WCDMA
≤ 10:1 (limit to avoid permanent damage)
≤ 2:1 (limit to fulfill all regulatory requirements)
UL865-NAR & UL865-NAD
Depending by frequency band(s) provided by the network operator, the
customer shall use the most suitable antenna for that/those band(s)
70 MHz in GSM850
140 MHz PCS 1900
70 MHz in WCDMA Band V
140 MHz in WCDMA Band II
50 ohm
> 33dBm(2 W) peak power in GSM
> 24dBm Average power in WCDMA
≤ 10:1 (limit to avoid permanent damage)
≤ 2:1 (limit to fulfill all regulatory requirements)
UL865 Hardware User Guide
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When using the Telit UL865 module, since there's no antenna connector on the module, the
antenna must be connected to the UL865 through the PCB with the antenna pad (pin 34).
In the case that the antenna is not directly developed on the same PCB, hence directly
connected at the antenna pad of the UL865, then a PCB line is needed in order to connect
with it or with its connector.
This transmission line shall fulfill the following requirements:
ANTENNA LINE ON PCB REQUIREMENTS
50 ohm
Impedance
0,3 dB
Max Attenuation
No coupling with other signals allowed
Cold End (Ground Plane) of antenna shall be equipotential to the
UL865 ground pins
This transmission line should be designed according to the following guidelines:
Ensure that the antenna line impedance is 50 ohm;
Keep the antenna line on the PCB as short as possible, since the antenna line loss shall be
less than 0,3 dB;
Antenna line must have uniform characteristics, constant cross section; avoid meanders and
abrupt curves;
Keep, if possible, one layer of the PCB used only for the Ground plane;
Surround (on the sides, over and under) the antenna line on PCB with Ground, avoid having
other signal tracks facing directly the antenna line track;
The ground around the antenna line on PCB has to be strictly connected to the Ground Plane
by placing vias every 2mm at least;
Place EM noisy devices as far as possible from UL865 antenna line;
Keep the antenna line far away from the UL865 power supply lines;
If you have EM noisy devices around the PCB hosting the UL865, such as fast switching ICs,
take care of the shielding of the antenna line by burying it inside the layers of PCB and
surround it with Ground planes, or shield it with a metal frame cover.
If you don't have EM noisy devices around the PCB of UL865, by using a micro strip on the
superficial copper layer for the antenna line, the line attenuation will be lower than a buried
one;
UL865 Hardware User Guide
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In the case FCC certification is required for an application using UL865-NAx, according to
FCC KDB 996369 for modular approval requirements, the transmission line has to be similar
to that implemented on UL865 interface board and described in the following chapter.
During the design of the UL865 interface board, the placement of components has been
chosen properly, in order to keep the line length as short as possible, thus leading to lowest
power losses possible. A Grounded Coplanar Waveguide (G-CPW) line has been chosen,
since this kind of transmission line ensures good impedance control and can be implemented
in an outer PCB layer as needed in this case. A SMA female connector has been used to feed
the line.
The interface board is realized on a FR4, 4-layers PCB. Substrate material is characterized by
relative permittivity εr = 4.6 ± 0.4 @ 1 GHz, TanD= 0.019 ÷ 0.026 @ 1 GHz.
A characteristic impedance of nearly 50 Ω is achieved using trace width = 1.1 mm, clearance
from coplanar ground plane = 0.3 mm each side. The line uses reference ground plane on
layer 3, while copper is removed from layer 2 underneath the line. Height of trace above
ground plane is 1.335 mm. Calculated characteristic impedance is 51.6 Ω, estimated line loss
is less than 0.1 dB. The line geometry is shown below:
UL865 Hardware User Guide
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HP8753E VNA (Full-2-port calibration) has been used in this measurement session. A
calibrated coaxial cable has been soldered at the pad corresponding to UL865 RF output; a
SMA connector has been soldered to the board in order to characterize the losses of the
transmission line including the connector itself. During Return Loss / impedance
measurements, the transmission line has been terminated to 50 Ω load.
Return Loss plot of line under test is shown below:
UL865 Hardware User Guide
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Line input impedance (in Smith Chart format, once the line has been terminated to 50 Ω load)
is shown in the following figure:
Insertion Loss of G-CPW line plus SMA connector is shown below:
UL865 Hardware User Guide
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Install the antenna in a place covered by the GSM / WCDMA signal.
If the device antenna is located farther than 20cm from the human body and there are no colocated transmitter then the Telit FCC/IC approvals can be re-used by the end product.
If the device antenna is located closer than 20cm from the human body or there are co-located
transmitter then the additional FCC/IC testing may be required for the end product (Telit
FCC/IC approvals cannot be reused).
Antenna shall not be installed inside metal cases.
Antenna shall be installed also according to antenna manufacturer instructions.
UL865 Hardware User Guide
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Where not specifically stated, all the interface circuits work at 1.8V CMOS logic levels. The
following table shows the logic level specifications used in the UL865 interface circuits:
Absolute Maximum Ratings -Not Functional
Parameter
Min
Max
Input level on any digital pin
-0.3V +2.1V
(CMOS 1.8) when on
Operating Range - Interface levels (1.8V CMOS)
Level
Min
Max
Input high level
1.5V
1.9V
Input low level
Output high level
0V
1.6V
0V
0.35V
1.9V
0.2V
Output low level
Current characteristics
Level
Typical
Output Current
1mA
Input Current
1uA
UL865 Hardware User Guide
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Signal
Function
I/O
pin
RESET*
Phone reset
47
RESET* is used to reset the UL865. Whenever this signal is pulled low, the UL865 is reset.
When the device is reset it stops any operation. After the release of the reset UL865 is
unconditionally shut down, without doing any detach operation from the network where it is
registered. This behavior is not a proper shut down because any GSM device is requested to
issue a detach request on turn off. For this reason the Reset signal must not be used to
normally shutting down the device, but only as an emergency exit in the rare case the device
remains stuck waiting for some network response.
The RESET* is internally controlled on start-up to achieve a proper power-on reset sequence,
so there's no need to control this pin on start-up. It may only be used to reset a device already
on that is not responding to any command.
NOTE:
Do not use this signal to power OFF the UL865. Use the ON/OFF procedure to perform this
function.
Reset Signal Operating levels:
Signal
RESET* Input high
RESET* Input low
Min
1.5V(NOTE1)
0V
Max
1.9V
0.35V
(NOTE1) this signal is internally pulled up so the pin can be left floating if not used.
If unused, this signal may be left unconnected. If used, then it must always be connected with
an open collector transistor, to permit to the internal circuitry the power on reset and under
voltage lockout functions.
UL865 Hardware User Guide
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The UL865 includes one integrated universal serial bus (USB) transceiver:
This port is compliant with the USB 2.0 HS only.
The following table is listing the available signals:
PAD
Signal
I/O
Function
Type
18
USB_D+
I/O
USB differential Data (+)
3.3V
17
USB_D-
I/O
USB differential Data (-)
3.3V
VUSB
AI
Power sense for the internal USB
transceiver.
5V
NOTE
Accepted range:
4.4V to 5.25V
The USB_DPLUS and USB_DMINUS signals have a clock rate of 480 MHz. The signal
traces should be routed carefully. Trace lengths, number of vias and capacitive
loading should be minimized. The impedance value should be as close as possible to 90
Ohms differential.
NOTE:
VUSB pin should be disconnected before activating the Power Saving Mode.
The USB 1.1 mode could be used to provide AT Commands / Data communication but not
for a SW upgrade.
UL865 Hardware User Guide
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The UL865 Module is provided by one SPI interface.
The SPI interface defines two handshake lines for flow control and mutual wake-up of the
modem and the Application Processor: SRDY (slave ready) and MRDY (master ready).
The AP has the master role, that is, it supplies the clock.
The following table is listing the available signals:
PAD
44
45
28
27
25
Signal
SPI_MISO
SPI_MOSI
SPI_SRDY
SPI_MRDY
SPI_CLK
I/O
I/O
I/O
I/O
Function
SPI_MISO
SPI_MOSI
SPI_SRDY
SPI_MRDY
SPI_CLK
Type
CMOS 1.8V
CMOS 1.8V
CMOS 1.8V
CMOS 1.8V
CMOS 1.8V
Comment
Shared with RX_AUX
Shared with GPIO_06 / ALARM /
Shared with GPIO_07 / BUZZER /
CMOS 1.8V
NOTE:
Due to the shared functions, when the SPI port is used, it is not possible to use the Auxiliary
UART, GPIO_06, GPIO_07 and related alternate functions.
UL865 Hardware User Guide
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The serial port on the UL865 is the core of the interface between the module and OEM
hardware.
2 serial ports are available on the module:
MODEM SERIAL PORT 1 (Main, ASC0)
MODEM SERIAL PORT 2 (Auxiliary, ASC1)
Several configurations can be designed for the serial port on the OEM hardware, but the most
common are:
RS232 PC com port
microcontroller UART @ 1.8V (Universal Asynchronous Receive Transmit)
microcontroller UART @ 3V or other voltages different from 1.8V
microcontroller UART @ 5V or other voltages different from 1.8V
Depending from the type of serial port on the OEM hardware a level translator circuit may be
needed to make the system work. The only configuration that doesn't need a level translation
is the 1.8V UART.
The serial port on the UL865 is a +1.8V UART with all the 8 RS232 signals. It differs from
the PC-RS232 in the signal polarity (RS232 is reversed) and levels. The levels for the UL865
UART are the CMOS levels:
Absolute Maximum Ratings -Not Functional
Parameter
Min
Max
Input level on any digital -0.3V
+2.1V
pad when on
Operating Range - Interface levels (1.8V CMOS)
Level
Min
Max
Input high level VIH
1.5V
1.9V
Input low level VIL
Output high level VOH
Output low level VOL
0V
1.6V
0V
0.35V
1.9V
0.2V
UL865 Hardware User Guide
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The signals of the UL865 serial port are:
RS232 Pin
Number
Signal
UL865
Pad Number
Name
Usage
DCD - dcd_uart
Data Carrier Detect
RXD - tx_uart
TXD - rx_uart
Transmit line *see Note
Receive line *see Note
DTR - dtr_uart
Data Terminal Ready
GND
32, 33, 35, 36, 46
Ground
DSR - dsr_uart
Data Set Ready
RTS -rts_uart
Request to Send
CTS - cts_uart
Clear to Send
RI - ri_uart
Ring Indicator
Output from the UL865 that indicates the
carrier presence
Output transmit line of UL865 UART
Input receive of the UL865 UART
Input to the UL865 that controls the DTE
READY condition
Ground
Output from the UL865 that indicates the
module is ready
Input to the UL865 that controls the
Hardware flow control
Output from the UL865 that controls the
Hardware flow control
Output from the UL865 that indicates the
incoming call condition
The following table shows the typical input value of internal pull-up resistors for RTS DTR
and TXD input lines and in all module states:
STATE
ON
OFF
RESET
POWER
SAVING
RTS DTR TXD
5K to 12K
Schottky diode
Schottky diode
5K to 12K
Pull up tied to
1V8
1V8
The input line ON_OFF and RESET state can be treated as in picture below
UL865 Hardware User Guide
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NOTE:
According to V.24, RX/TX signal names are referred to the application side, therefore on the
UL865 side these signal are on the opposite direction: TXD on the application side will be
connected to the receive line (here named TXD/ rx_uart ) of the UL865 serial port and vice
versa for RX.
NOTE:
For a minimum implementation, only the TXD and RXD lines can be connected, the other
lines can be left open provided a software flow control is implemented.
NOTE:
In order to avoid a back powering effect it is recommended to avoid having any HIGH logic
level signal applied to the digital pins of the UL865 when the module is powered off or during
an ON/OFF transition.
The secondary serial port on the UL865 is a CMOS1.8V with only the RX and TX signals.
The signals of the UL865 serial port are:
PAD
Signal
I/O
Function
Type
Comment
44
RXD_AUX
Auxiliary UART (RX Data from DTE)
CMOS 1.8V
Shared with SPI_MISO
45
TXD_AUX
Auxiliary UART (TX Data to DTE)
CMOS 1.8V
Shared with SPI_MOSI
NOTE:
Due to the shared functions, when the SPI port is used, it is not possible to use the SPI port.
NOTE:
In order to avoid a back powering effect it is recommended to avoid having any HIGH logic
level signal applied to the digital pins of the UL865 when the module is powered off or during
an ON_OFF transition.
UL865 Hardware User Guide
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In order to interface the UL865 with a PC com port or a RS232 (EIA/TIA-232) application a
level translator is required. This level translator must:
invert the electrical signal in both directions;
change the level from 0/1.8V to +15/-15V
Actually, the RS232 UART 16450, 16550, 16650 & 16750 chipsets accept signals with lower
levels on the RS232 side (EIA/TIA-562), allowing a lower voltage-multiplying ratio on the
level translator. Note that the negative signal voltage must be less than 0V and hence some
sort of level translation is always required.
The simplest way to translate the levels and invert the signal is by using a single chip level
translator. There are a multitude of them, differing in the number of drivers and receivers and
in the levels (be sure to get a true RS232 level translator not a RS485 or other standards).
By convention the driver is the level translator from the 0-1.8V UART to the RS232 level.
The receiver is the translator from the RS232 level to 0-1.8V UART.
In order to translate the whole set of control lines of the UART you will need:
5 drivers
3 receivers
NOTE:
The digital input lines working at 1.8V CMOS have an absolute maximum input voltage of
2.1V; therefore the level translator IC shall not be powered by the +3.8V supply of the
module. Instead, it must be powered from a +1.8V (dedicated) power supply.
UL865 Hardware User Guide
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An example of RS232 level adaptation circuitry could be done using a MAXIM transceiver
(MAX218).
In this case the chipset is capable to translate directly from 0/1.8V to the RS232 levels
(Example done on 4 signals only).
The RS232 serial port lines are usually connected to a DB9 connector with the following
layout:
UL865 Hardware User Guide
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The Base Band Chip of the UL865 provides one Digital Audio Interface.
Please refer to the UL865 DVI Application Note for additional details on this function.
The general purpose I/O pads can be configured to act in three different ways:
input
output
alternate function (internally controlled)
Input pads can be read; they report the digital value (high or low) present on the pad at the
read time.
Output pads can only be written or queried and set the value of the pad output.
An alternate function pad is internally controlled by the UL865 firmware and acts depending
on the function implemented.
The following table shows the available GPIO on the UL865 and their state.
Type
Input /
output
current
Default
State
ON_OFF
state
State
during
Reset
Configurable GPIO
CMOS 1.8V
1uA/1mA
INPUT
I/O
Configurable GPIO
CMOS 1.8V
1uA/1mA
INPUT
GPIO_03
I/O
Configurable GPIO
CMOS 1.8V
1uA/1mA
INPUT
39
GPIO_04
I/O
Configurable GPIO
CMOS 1.8V
1uA/1mA
INPUT
29
GPIO_05
I/O
Configurable GPIO
CMOS 1.8V
1uA/1mA
INPUT
28
GPIO_06
I/O
Configurable GPIO
CMOS 1.8V
1uA/1mA
INPUT
27
GPIO_07
I/O
Configurable GPIO
CMOS 1.8V
1uA/1mA
INPUT
26
GPIO_08
I/O
Configurable GPIO
CMOS 1.8V
1uA/1mA
INPUT
Pin
Signal
I/O
42
GPIO_01
I/O
41
GPIO_02
40
Function
Note
Alternate function
DVI_WA0
Alternate function
JDR and DVI_RX
Alternate function
DVI_TX
Alternate function
TX Disable and
DVI_TX
Alternate function
/SPI_SRDY
Alternate function
/SPI_MRDY
Alternate function
STAT_LED
NOTE:
The internal GPIO’s pull up/pull down could be set to the preferred status for the application
using the AT#GPIO command.
Please refer for the AT Commands User Guide for the detailed command Syntax.
UL865 Hardware User Guide
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WARNING:
During power up the GPIOs may be subject to transient glitches.
Also the UART‘s control flow pins can be usable as GPI/O.
Pin
Signal
I/O
Function
GPO_A
Configurable GPO
GPO_B
Configurable GPO
GPO_C
Configurable GPO
GPI_E
Configurable GPI
GPI_F
Configurable GPI
GPO_D
Configurable GPO
Type
CMOS
1.8V
CMOS
1.8V
CMOS
1.8V
CMOS
1.8V
CMOS
1.8V
CMOS
1.8V
Input /
output
current
Default
State
ON_OFF
state
State
during
Reset
1uA/1mA
INPUT
1uA/1mA
INPUT
1uA/1mA
INPUT
1uA/1mA
INPUT
1uA/1mA
INPUT
1uA/1mA
INPUT
Note
Alternate function
C109/DCD
Alternate function
C125/RING
Alternate function
C107/DSR
Alternate function
C108/DTR
Alternate function
C105/RTS
Alternate function
C106/CTS
UL865 Hardware User Guide
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Where not specifically stated, all the interface circuits work at 1.8V CMOS logic levels.
The following table shows the logic level specifications used in the UL865 interface circuits:
Absolute Maximum Ratings -Not Functional
Parameter
Min
Max
Input level on any digital pin
-0.3V +2.1V
(CMOS 1.8) when on
Operating Range - Interface levels (1.8V CMOS)
Level
Min
Max
Input high level
1.5V
1.9V
Input low level
Output high level
0V
1.6V
0V
0.35V
1.9V
0.2V
Output low level
Current characteristics
Level
Typical
Output Current
1mA
Input Current
1uA
UL865 Hardware User Guide
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The GPIO pads, when used as inputs, can be connected to a digital output of another device
and report its status, provided this device has interface levels compatible with the 1.8V
CMOS levels of the GPIO.
If the digital output of the device to be connected with the GPIO input pad has interface levels
different from the 1.8V CMOS, then it can be buffered with an open collector transistor with a
47K pull up to 1.8V.
NOTE:
In order to avoid a back powering effect it is recommended to avoid having any HIGH logic
level signal applied to the digital pins of the UL865 when the module is powered OFF or
during an ON/OFF transition.
TIP:
The V_AUX / PWRMON pin can be used for input pull up reference or/and for ON
monitoring.
The GPIO pads, when used as outputs, can drive 1.8V CMOS digital devices or compatible
hardware. When set as outputs, the pads have a push-pull output and therefore the pull-up
resistor may be omitted.
UL865 Hardware User Guide
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The STAT_LED pin status shows information on the network service availability and Call
status. The function is available as alternate function of GPIO_08 (to be enabled using the
AT#GPIO=8,0,2 command).
In the UL865 modules, the STAT_LED needs an external transistor to drive an external LED.
Therefore, the status indicated in the following table is reversed with respect to the pin status.
Device Status
LED status
Device off
Permanently off
Not Registered
Permanently on
Registered in idle
Registered in idle + power saving
Blinking 1sec on + 2 sec off
It depends on the event that triggers the wakeup (In
sync with network paging)
Voice Call Active
Dial-Up
Permanently on
Blinking 1 sec on + 2 sec off
A schematic example could be:
UL865 Hardware User Guide
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All the GPIO pins can be used as SIM DETECT input. The AT Command used to enable the
function is:
AT#SIMINCFG
Use the AT command AT#SIMDET=2 to enable the SIMIN detection
Use the AT command AT&W0 and AT&P0 to store the SIMIN detection in the common
profile.
For full details see AT Commands Reference Guide, 80000ST10025a.
NOTE:
Don’t use the SIM IN function on the same pin where the GPIO function is enabled and vice
versa!
The VRTC pin brings out the Real Time Clock supply, which is separate from the rest of the
digital part, allowing having only RTC going on when all the other parts of the device are off.
To this power output a backup capacitor can be added in order to increase the RTC autonomy
during power off of the battery. NO Devices must be powered from this pin.
In order to keep the RTC active when VBATT is not supplied it is possible to back up the
RTC section connecting a backup circuit to the related VRTC signal (pad 30 on module’s
Pinout).
For additional details on the Backup solutions please refer to the related application note
(xE910 RTC Backup Application Note)
Please refer to the related User Guide (SIM Holder Design Guides, 80000NT10001a).
UL865 Hardware User Guide
1VV0301050 Rev 2 – 2013-10-09
The UL865 provides a Digital to Analog Converter. The signal (named DAC_OUT) is
available on pin 15 of the UL865.
The on board DAC is a 10 bit converter, able to generate an analogue value based on a
specific input in the range from 0 up to 1023. However, an external low-pass filter is
necessary
Voltage range (filtered)
Range
Min
Max
1.8
1023
Units
Volt
Steps
The precision is 10 bits so, if we consider that the maximum voltage is 2V, the integrated
voltage could be calculated with the following formula:
Integrated output voltage = (2 *value) / 1023
DAC_OUT line must be integrated (for example with a low band pass filter) in order to obtain
an analog voltage.
UL865 Hardware User Guide
1VV0301050 Rev 2 – 2013-10-09
An AT command is available to use the DAC function.
The command is: AT#DAC= [ [, ]]
 - scale factor of the integrated output voltage (0..1023 - 10 bit precision)
it must be present if =1
Refer to SW User Guide or AT Commands Reference Guide for the full description of this
function.
NOTE:
The DAC frequency is selected internally. D/A converter must not be used during
POWERSAVING.
UL865 Hardware User Guide
1VV0301050 Rev 2 – 2013-10-09
The UL865 is provided by two A/D converters. They are able to read a voltage level in the
range of 0÷1.2 volts applied on the ADC pin input, store and convert it into 10 bit word.
The following table is showing the ADC characteristics:
Input Voltage range
AD conversion
Input Resistance
Input Capacitance
Min
Typical Max
1.2
10
Units
Volt
bits
Mohm
pF
The signal is available on the following pads:
PAD
Name
I/O
Description
13
ADC_IN1
AI
Analog/Digital converter input
14
ADC_IN2
AI
Analog/Digital converter input
Notes
Accepted values 0
to 1.2V DC
Accepted values 0
to 1.2V DC
An AT command is available to use the ADC function.
The command is AT#ADC=1,2
The read value is expressed in mV
Refer to SW User Guide or AT Commands Reference Guide for the full description of this
function.
UL865 Hardware User Guide
1VV0301050 Rev 2 – 2013-10-09
A regulated power supply output is provided in order to supply small devices from the
module. The signal is present on Pad 43 and it is in common with the PWRMON (module
powered ON indication) function.
This output is always active when the module is powered ON.
The operating range characteristics of the supply are:
Level
Output voltage
Output current
Output bypass capacitor
(inside the module)
Min
Typical
Max
1.78V
1.80V
1.82V
60mA
1uF
UL865 Hardware User Guide
1VV0301050 Rev 2 – 2013-10-09
The UL865 modules have been designed to be compliant with a standard lead-free SMT
process.
Pin 1
Lead-free Alloy:
Surface finishing Ni/Au for all solder pads
Bottom View
Dimensions in mm
UL865 Hardware User Guide
1VV0301050 Rev 2 – 2013-10-09
In order to easily rework the UL865 is suggested to consider on the application a 1.5 mm
placement inhibited area around the module.
It is also suggested, as common rule for an SMT component, to avoid having a mechanical
part of the application in direct contact with the module.
UL865 Hardware User Guide
1VV0301050 Rev 2 – 2013-10-09
Stencil’s apertures layout can be the same of the recommended footprint (1:1), we suggest a
thickness of stencil foil ≥ 120µm.
Non solder mask defined (NSMD) type is recommended for the solder pads on the PCB.
Copper Pad
Pad
Solder Mask
PCB
SMD
(Solder Mask Defined)
NSMD
(Non Solder Mask Defined)
UL865 Hardware User Guide
1VV0301050 Rev 2 – 2013-10-09
Solder resist opening
It is not recommended to place via or micro-via not covered by solder resist in an area of 0.3 mm
around the pads unless it carries the same signal of the pad itself (see following figure).
Inhibit area for micro-via
Holes in pad are allowed only for blind holes and not for through holes.
UL865 Hardware User Guide
1VV0301050 Rev 2 – 2013-10-09
Recommendations for PCB pad surfaces:
Finish
Layer thickness [µm]
Electro-less Ni / Immersion Au
3 –7 / 0.03 – 0.15
Properties
good solder ability protection,
high shear force values
The PCB must be able to resist the higher temperatures which are occurring at the lead-free
process. This issue should be discussed with the PCB-supplier. Generally, the wettability of tinlead solder paste on the described surface plating is better compared to lead-free solder paste.
It is not necessary to panel the application PCB, however in that case it is suggested to use milled
contours and predrilled board breakouts; scoring or v-cut solutions are not recommended.
Lead free
Sn/Ag/Cu
Solder paste
We recommend using only “no clean” solder paste in order to avoid the cleaning of
the modules after assembly.
Recommended solder reflow profile
tp
TL
tL
Tsmax
Tsmin
ts
ttp
UL865 Hardware User Guide
1VV0301050 Rev 2 – 2013-10-09
Profile Feature
Average ramp-up rate (TL to TP)
Preheat
– Temperature Min (Tsmin)
– Temperature Max (Tsmax)
– Time (min to max) (ts)
Tsmax to TL
– Ramp-up Rate
Time maintained above:
– Temperature (TL)
– Time (tL)
Peak Temperature (Tp)
Time within 5°C of actual Peak
Temperature (tp)
Ramp-down Rate
Time 25°C to Peak Temperature (ttp)
Pb-Free Assembly
3°C/second max
150°C
200°C
60-180 seconds
3°C/second max
217°C
60-150 seconds
245 +0/-5°C
10-30 seconds
6°C/second max.
8 minutes max.
NOTE:
All temperatures refer to topside of the package, measured on the package body
surface
WARNING:
The UL865 module withstands one reflow process only.
UL865 Hardware User Guide
1VV0301050 Rev 2 – 2013-10-09
The UL865 modules are packaged on trays of 20 pieces each. These trays can be used in SMT
processes for pick & place handling.
UL865 Hardware User Guide
1VV0301050 Rev 2 – 2013-10-09
UL865 Hardware User Guide
1VV0301050 Rev 2 – 2013-10-09
UL865 Hardware User Guide
1VV0301050 Rev 2 – 2013-10-09
The moisture sensitivity level of the Product is “3” according with standard IPC/JEDEC JSTD-020, take care of all the relative requirements for using this kind of components.
Moreover, the customer has to take care of the following conditions:
a) The shelf life of the Product inside of the dry bag is 12 months from the bag seal date,
when stored in a non-condensing atmospheric environment of < 40°C and < 90% RH.
b) Environmental condition during the production: <= 30°C / 60% RH according to
IPC/JEDEC J-STD-033B.
c) The maximum time between the opening of the sealed bag and the reflow process must be
168 hours if condition b) “IPC/JEDEC J-STD-033B paragraph 5.2” is respected.
d) Baking is required if conditions b) or c) are not respected
e) Baking is required if the humidity indicator inside the bag indicates 10% RH or more.
UL865 Hardware User Guide
1VV0301050 Rev 2 – 2013-10-09
Modification statement
Telit has not approved any changes or modifications to this device by the user. Any changes or modifications
could void the user’s authority to operate the equipment.
Telit n’approuve aucune modification apportée à l’appareil par l’utilisateur, quelle qu’en soit la nature. Tout
changement ou modification peuvent annuler le droit d’utilisation de l’appareil par l’utilisateur.
Interference statement
This device complies with Part 15 of the FCC Rules and Industry Canada licence-exempt RSS standard(s).
Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this
device must accept any interference, including interference that may cause undesired operation of the device.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de
licence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire de
brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le
brouillage est susceptible d'en compromettre le fonctionnement.
Wireless notice
This equipment complies with FCC and IC radiation exposure limits set forth for an uncontrolled environment. The antenna should be
installed and operated with minimum distance of 20 cm between the radiator and your body. Antenna gain must be below:
Frequency band
UL865-NAR / UL865-NAD
GSM 850/FDD V
6.93 dBi
PCS 1900/FDD II
2.51 dBi
This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
Cet appareil est conforme aux limites d'exposition aux rayonnements de la IC pour un environnement non
contrôlé. L'antenne doit être installé de façon à garder une distance minimale de 20 centimètres entre la
source de rayonnements et votre corps. Gain de l'antenne doit être ci-dessous:
Bande de fréquence
UL865-NAR / UL865-NAD
GSM 850/FDD V
6.93 dBi
PCS 1900/FDD II
2.51 dBi
L'émetteur ne doit pas être colocalisé ni fonctionner conjointement avec à autre antenne ou autre émetteur.
UL865 Hardware User Guide
1VV0301050 Rev 2 – 2013-10-09
FCC Class B digital device notice
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to
part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may cause harmful interference to
radio communications. However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the interference by
one or more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
Consult the dealer or an experienced radio/TV technician for help.
Labelling Requirements for the Host device
The host device shall be properly labelled to identify the modules within the host device. The certification
label of the module shall be clearly visible at all times when installed in the host device, otherwise the host
device must be labelled to display the FCC ID and IC of the module, preceded by the words "Contains
transmitter module", or the word "Contains", or similar wording expressing the same meaning, as follows:
Contains FCC ID: RI7UL865NA
Contains IC: 5131A-UL865NA
L'appareil hôte doit être étiqueté comme il faut pour permettre l'identification des modules qui s'y trouvent.
L'étiquette de certification du module donné doit être posée sur l'appareil hôte à un endroit bien en vue en
tout temps. En l'absence d'étiquette, l'appareil hôte doit porter une étiquette donnant le FCC ID et le IC du
module, précédé des mots « Contient un module d'émission », du mot « Contient » ou d'une formulation
similaire exprimant le même sens, comme suit :
Contains FCC ID: RI7UE910NA
Contient IC: 5131A-UE910NA
CAN ICES-3 (B) / NMB-3 (B)
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de classe B est conforme à la norme canadienne ICES-003.
UL865 Hardware User Guide
1VV0301050 Rev 2 – 2013-10-09
The UL865-EUR and UL865-EUD modules have been evaluated against the essential requirements of the
1999/5/EC Directive.
Bulgarian
Czech
Danish
Dutch
English
Estonian
German
Greek
Hungarian
Finnish
French
Icelandic
Italian
Latvian
Lithuanian
Maltese
Norwegian
С настоящето Telit Communications S.p.A. декларира, че 2G/3G module отговаря на
съществените изисквания и другите приложими изисквания на Директива 1999/5/ЕС.
Telit Communications S.p.A. tímto prohlašuje, že tento 2G/3G module je ve shodě se
základními požadavky a dalšími příslušnými ustanoveními směrnice 1999/5/ES.
Undertegnede Telit Communications S.p.A. erklærer herved, at følgende udstyr 2G/3G module
overholder de væsentlige krav og øvrige relevante krav i direktiv 1999/5/EF.
Hierbij verklaart Telit Communications S.p.A. dat het toestel 2G/3G module in
overeenstemming is met de essentiële eisen en de andere relevante bepalingen van richtlijn
1999/5/EG.
Hereby, Telit Communications S.p.A., declares that this 2G/3G module is in compliance with
the essential requirements and other relevant provisions of Directive 1999/5/EC.
Käesolevaga kinnitab Telit Communications S.p.A. seadme 2G/3G module vastavust direktiivi
1999/5/EÜ põhinõuetele ja nimetatud direktiivist tulenevatele teistele asjakohastele sätetele.
Hiermit erklärt Telit Communications S.p.A., dass sich das Gerät 2G/3G module in
Übereinstimmung mit den grundlegenden Anforderungen und den übrigen einschlägigen
Bestimmungen der Richtlinie 1999/5/EG befindet.
ΜΕ ΤΗΝ ΠΑΡΟΥΣΑ Telit Communications S.p.A. ΔΗΛΩΝΕΙ ΟΤΙ 2G/3G module
ΣΥΜΜΟΡΦΩΝΕΤΑΙ ΠΡΟΣ ΤΙΣ ΟΥΣΙΩΔΕΙΣ ΑΠΑΙΤΗΣΕΙΣ ΚΑΙ ΤΙΣ ΛΟΙΠΕΣ ΣΧΕΤΙΚΕΣ
ΔΙΑΤΑΞΕΙΣ ΤΗΣ ΟΔΗΓΙΑΣ 1999/5/ΕΚ.
Alulírott, Telit Communications S.p.A. nyilatkozom, hogy a 2G/3G module megfelel a
vonatkozó alapvetõ követelményeknek és az 1999/5/EC irányelv egyéb elõírásainak.
Telit Communications S.p.A. vakuuttaa täten että 2G/3G module tyyppinen laite on direktiivin
1999/5/EY oleellisten vaatimusten ja sitä koskevien direktiivin muiden ehtojen mukainen.
Par la présente Telit Communications S.p.A. déclare que l'appareil 2G/3G module est conforme
aux exigences essentielles et aux autres dispositions pertinentes de la directive 1999/5/CE.
Hér með lýsir Telit Communications S.p.A. yfir því að 2G/3G module er í samræmi við
grunnkröfur og aðrar kröfur, sem gerðar eru í tilskipun 1999/5/EC
Con la presente Telit Communications S.p.A. dichiara che questo 2G/3G module è conforme ai
requisiti essenziali ed alle altre disposizioni pertinenti stabilite dalla direttiva 1999/5/CE.
Ar šo Telit Communications S.p.A. deklarē, ka 2G/3G module atbilst Direktīvas 1999/5/EK
būtiskajām prasībām un citiem ar to saistītajiem noteikumiem.
Šiuo Telit Communications S.p.A. deklaruoja, kad šis 2G/3G module atitinka esminius
reikalavimus ir kitas 1999/5/EB Direktyvos nuostatas.
Hawnhekk, Telit Communications S.p.A., jiddikjara li dan 2G/3G module jikkonforma malħtiġijiet essenzjali u ma provvedimenti oħrajn relevanti li hemm fid-Dirrettiva 1999/5/EC.
Telit Communications S.p.A. erklærer herved at utstyret 2G/3G module er i samsvar med de
grunnleggende krav og øvrige relevante krav i direktiv 1999/5/EF.
UL865 Hardware User Guide
1VV0301050 Rev 2 – 2013-10-09
Polish
Portuguese
Slovak
Slovenian
Spanish
Swedish
Niniejszym Telit Communications S.p.A. oświadcza, że 2G/3G module jest zgodny z
zasadniczymi wymogami oraz pozostałymi stosownymi postanowieniami Dyrektywy
1999/5/EC
Telit Communications S.p.A. declara que este 2G/3G module está conforme com os requisitos
essenciais e outras disposições da Directiva 1999/5/CE.
Telit Communications S.p.A. týmto vyhlasuje, že 2G/3G module spĺňa základné požiadavky a
všetky príslušné ustanovenia Smernice 1999/5/ES.
Telit Communications S.p.A. izjavlja, da je ta 2G/3G module v skladu z bistvenimi zahtevami
in ostalimi relevantnimi določili direktive 1999/5/ES.
Por medio de la presente Telit Communications S.p.A. declara que el 2G/3G module cumple
con los requisitos esenciales y cualesquiera otras disposiciones aplicables o exigibles de la
Directiva 1999/5/CE.
Härmed intygar Telit Communications S.p.A. att denna 2G/3G module står I överensstämmelse
med de väsentliga egenskapskrav och övriga relevanta bestämmelser som framgår av direktiv
1999/5/EG.
In order to satisfy the essential requirements of 1999/5/EC Directive, UL865-EUR and UL865-EUD modules
are compliant with the following standards:
RF spectrum use (R&TTE art. 3.2)
EN 301 511 V9.02
EN 301 908-1 V5.2.1
EN 301 908-2 V5.2.1
EMC (R&TTE art. 3.1b)
EN 301 489-1 V1.9.2
EN 301 489-7 V1.3.1
EN 301 489-24 V1.5.1
Health & Safety (R&TTE art. 3.1a)
EN 60950-1:2006 + A11:2009 + A1:2010 + A12:2011
+ AC2011
EN 62311:2008
UL865 Hardware User Guide
1VV0301050 Rev 2 – 2013-10-09
The conformity assessment procedure referred to in Article 10 and detailed in Annex IV of Directive
1999/5/EC has been followed with the involvement of the following Notified Body Notified Body:
AT4 wireless, S.A.
Parque Tecnologico de Andalucía
C/ Severo Ochoa 2
29590 Campanillas – Málaga
SPAIN
Notified Body No: 1909
1909
Thus, the following marking is included in the product:
The full declaration of conformity can be found on the following address:
http://www.telit.com/
There is no restriction for the commercialisation of the UL865-EUR and UL865-EUD modules in all the
countries of the European Union.
Final product integrating this module must be assessed against essential requirements of the 1999/5/EC
(R&TTE) Directive. It should be noted that assessment does not necessarily lead to testing. Telit
Communications S.p.A. recommends carrying out the following assessments:
RF spectrum use (R&TTE art. 3.2)
It will depend on the antenna used on the final product.
EMC (R&TTE art. 3.1b)
Testing
Health & Safety (R&TTE art. 3.1a)
Testing
UL865 Hardware User Guide
1VV0301050 Rev 2 – 2013-10-09
READ CAREFULLY
Be sure the use of this product is allowed in the country and in the environment required.
The use of this product may be dangerous and has to be avoided in the following areas:
Where it can interfere with other electronic devices in environments such as hospitals,
airports, aircrafts, etc.
Where there is risk of explosion such as gasoline stations, oil refineries, etc. It is
responsibility of the user to enforce the country regulation and the specific
environment regulation.
Do not disassemble the product; any mark of tampering will compromise the warranty
validity. We recommend following the instructions of the hardware user guides for a correct
wiring of the product. The product has to be supplied with a stabilized voltage source and the
wiring has to be conforming to the security and fire prevention regulations. The product has to
be handled with care, avoiding any contact with the pins because electrostatic discharges may
damage the product itself. Same cautions have to be taken for the SIM, checking carefully the
instruction for its use. Do not insert or remove the SIM when the product is in power saving
mode.
The system integrator is responsible for the functioning of the final product; therefore, care
has to be taken to the external components of the module, as well as any project or installation
issue, because the risk of disturbing the GSM network or external devices or having impact
on the security. Should there be any doubt, please refer to the technical documentation and the
regulations in force. Every module has to be equipped with a proper antenna with specific
characteristics. The antenna has
to be installed with care in order to avoid any interference with other electronic devices and
has to guarantee a minimum distance from the body (20 cm). In case this requirement cannot
be satisfied, the system integrator has to assess the final product against the SAR regulation.
The European Community provides some Directives for the electronic equipment introduced
on the market. All the relevant information’s are available on the European Community
website:
http://ec.europa.eu/enterprise/sectors/rtte/documents/
The text of the Directive 99/05 regarding telecommunication equipment is available, while
the applicable Directives (Low Voltage and EMC) are available at:
http://ec.europa.eu/enterprise/sectors/electrical/

---

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