UE910 V2 Hardware User Guide 1VV0301065 Rev.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 APPLICABILITY TABLE PRODUCT UE910-EU V2 UE910-NA V2 Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE DISCLAIMER 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.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 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.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 Contents 1. 2. 3. Introduction ............................................................................................................................. 8 1.1. Scope.................................................................................................................................. 8 1.2. Audience .............................................................................................................................
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 5.3.5. 5.3.6. 6. Thermal Design Guidelines ................................................................................................... 30 Power Supply PCB layout Guidelines .................................................................................... 31 Antenna .................................................................................................................................. 33 6.1. GSM/WCDMA Antenna Requirements .
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 12.2. Module Finishing & Dimensions .................................................................................... 52 12.3. Recommended foot print for the application .................................................................. 54 12.4. Stencil ............................................................................................................................ 55 12.5. PCB Pad Design ......................................
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 1. Introduction 1.1. Scope The aim of this document is the description of typical hardware solutions useful for developing a product with the Telit UE910 V2 module. 1.2. Audience This document is intended for Telit customers who are about to implement their applications using our UE910 V2 modules. 1.3.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 1.4. Document Organization This document contains the following chapters: Chapter 1: “Introduction” provides a scope for this document, target audience, contact and support information, and text conventions. Chapter 2: “General Product Description” gives an overview of the features of the product. Chapter 3: “UE910 V2 Module Connections” deals with the pin out configuration and layout.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 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 UE910 V2 Software User Guide 1VV0301066 UE910 V2 AT Commands Reference Guide 80419ST10124A Telit EVK2 User Guide 1vv0300704 Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 2. General Product Description 2.1. Overview The aim of this document is the description of typical hardware solutions useful for developing a product with the Telit UE910 V2 module. In this document all the basic functions of a mobile device 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.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 2.2. Product Specifications ITEM Air Interface Data Service Power Class for Each band Multi-slot Configuration FEATUREs UE910-EU V2 UE910-NA V2 Dual-Bands WCDMA/HSDPA Dual-Bands WCDMA/HSDPA 900/2100MHz 850/1900MHz Dual-Bands EGSM 900/DCS1800MHz Dual-Bands GSM 850/PCS1900MHz HSDPA : Uplink up to 384kbps / Downlink up to 3.6Mbps(cat-6) WCDMA : Uplink/Downlink up to 384kbps EDGE : Uplink/Downlink up to 236.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 2.3. RoHS Compliance As a part of Telit’s corporate policy of environmental protection, the UE910 V2 complies with the RoHS (Restriction of Hazardous Substances) directive of the European Union (EU directive 2002/95/EG). Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 3. UE910 V2 Module Connections 3.1. Pin-Out Pin Signal I/O Function USB HS 2.0 Communication Port I/O USB differential Data(+) B15 USB_D+ I/O USB differential Data(-) C15 USB_DI Power sense for the internal USB transceiver A13 VUSB Asynchronous UART – Prog.
UE910 V2 Hardware User Guide 1VV0301065 Rev.
UE910 V2 Hardware User Guide 1VV0301065 Rev.
UE910 V2 Hardware User Guide 1VV0301065 Rev.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 NOTE: If not used, almost all pins not in use must be left disconnected.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 3.1.1. LGA Pads Layout Top View NOTE: The pin defined as RES must be considered RESERVED and not connected on any pin in the application. The related area on the application has to be kept empty. Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 4. Hardware Commands 4.1. Turning on the UE910 V2 module To turn on the UE910 V2, the pad ON_OFF* must be tied low for at least 1 second and then released. The maximum current that can be drained from the ON_OFF* pad is 0.1 mA. A simple circuit to power on the module is illustrated below: 4.1.1.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 During the Initialization state, any kind of AT-command is not available. DTE must wait for the Activation state to communicate with UE910 V2. To check if the UE910 V2 has powered on, the hardware line VAUX/PWRMON must be monitored. When VAUX/PWRMON goes high, the module has powered on. NOTE: Do not use any pull up resistor on the ON_OFF* line. It is pulled up with 250kΩ internally.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 4.2. Turning off the UE910 V2 module Turning off the device can be done in two ways: via AT command (see UE910 V2 Software User Guide, AT#SHDN) by tying low pin ON_OFF* Either ways, the device issues a detach request to network informing that the device will not be reachable any more. To turn OFF the UE910 V2 the pad ON_OFF* must be tied low for at least 2 seconds and then released.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 4.2.2. Turning OFF by tying low ON_OFF* To turn OFF the UE910 V2 the pad ON_OFF* must be tied low for at least 2 seconds and then released. The same circuitry and timing for the power on must be used. When the hold time of ON_OFF* is above 2 seconds, the UE910 V2 goes into the finalization state and will shut down PWRMON at the end of this state.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 4.4. Hardware Unconditional Shutdown The Unconditional shutdown of the module could be activated using the HW_SHUTDOWN* line(pad R13). WARNING: The hardware unconditional shutdown must NOT be used during normal operation of the device since it does not detach the device from the network. It shall be used as an emergency exit procedure. To unconditionally shutdown the UE910 V2, the pad HW_SHUTDOWN* must be tied low for at least 0.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 For example: Let us assume you need to drive the HW_SHUTDOWN* pad with a totem pole output of a +3/5 V microcontroller (uP_OUT2): 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 UE910 V2 when the module is powered OFF or during an ON/OFF transition. Reproduction forbidden without written authorization from Telit Communications S.p.A.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 5. 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’s overall performance. Read carefully the requirements and the guidelines that follow for a proper design. 5.1.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 5.2.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 5.3. General Design Rules The principal guidelines for the Power Supply Design embrace three different design steps: 5.3.1. the electrical design the thermal design the PCB layout Electrical Design Guidelines The electrical design of the power supply depends strongly on the power source where this power is drained. We will distinguish them into three categories: 5.3.2.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 An example of a linear regulator with 5V input: 5.3.3. +12V Input Source Power Supply Design Guidelines 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 suitable and must not be used. A switching power supply would be preferable because of its better efficiency, especially with the 2A peak current load represented by UE910 V2.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 An example of switching regulator with 12V input is in the schematic below: 5.3.4. Battery Source Power Supply Design Guidelines The desired nominal output for the power supply is 3.8V and the maximum voltage allowed is 4.2V. A single 3.7V lithium-ion cell battery type is ideal to supply power to the Telit UE910 V2 module. WARNING: The three battery cells (Ni/Cd or Ni/MH 3.6V nom.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 Considering the very low current during idle, especially if the 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.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 The PCB traces to UE910 V2 and the Bypass capacitor must be wide enough to ensure no significant voltage drops occur when the 2A current peaks are absorbed. This is a must for the same above-mentioned reasons. Try to keep this trace as short as possible.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 6. Antenna The antenna connection and board layout design are the most important parts in the full product design and they strongly reflect on the product’s overall performance. Read carefully and follow the requirements and the guidelines for a proper design. 6.1.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 Furthermore if the device is developed for the US and/or Canada market, it must comply with the FCC and/or IC approval requirements: This device is to be used only for mobile and fixed application. The antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 WARNING: Consider a mechanical design and a low-capacitance ESD protection device to protect UE910 V2 or customer specific requirements from ESD event to Antenna port (K1). Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 7. USB Port The UE910 V2 module includes a Universal Serial Bus (USB) transceiver, which operates at USB High-speed (480Mbits/sec) and slave mode only. It is compliant with the USB 2.0 specification and can be used for diagnostic monitoring, control and data transfers.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 8. Serial Port The serial port on the Telit UE910 V2 is the interface between the module and OEM hardware. Only one serial port is available on the module: Modem Serial Port 1 (Main) Several configurations can be designed for the serial port on the OEM hardware. The most common are: RS232 PC comport Microcontroller UART@1.8V(Universal Asynchronous Receiver Transmit) Microcontroller UART@5V or other voltages different from 1.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 8.1. Modem Serial Port 1 The serial port 1 on the UE910 V2 is a +1.8V UART with all 7 RS232 signals. It differs from the PC-RS232 in the signal polarity (RS232 is reversed) and levels. RS232 Pin # Signal UE910 V2 Pad No.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 RXD in the application side will be connected to the transmit line (here named C104/RXD) NOTE: For minimum implementation, only the TXD and RXD lines must be connected, the other lines can be left open provided a software flow control is implemented.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 8.2. Modem Serial Port 2 The secondary serial port on the UE910 V2 is not supported. PAD D15 E15 Signal Reserved Reserved I/O - Function Type Reserved Reserved Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 8.3. RS232 Level Translation In order to interface the Telit UE910 V2 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.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 9. Audio Section Overview The UE910 V2 provides an analog audio interface and digital audio interface. 9.1. Analog Audio Interface The UE910 V2 provides an analog audio interface; one differential input for audio to be transmitted(Uplink) and a balanced output for audio to be received(Downlink).
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 9.1.1. MIC Connection If a “balanced way” is anyway desired, much more care has to be taken to VMIC noise and ground noise. Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 TIP: Since the J-FET transistor inside the microphone acts as RF-detector-amplifier, ask vendor for a microphone with anti-EMI capacitor (usually a 33pF or a 10pF capacitor placed across the output terminals inside the case). 9.1.2. LIN-IN Connection (TBD) If the audio source is not a mike but a different device, the following connections can be done. Place 100nF capacitor in series with both inputs, so the DC current is blocked.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 9.1.3. EAR Connection The audio output of the UE910 V2 is balanced, this is helpful to double the level and to reject common mode (click and pop are common mode and therefore rejected). These outputs can drive directly a small loudspeaker with electrical impedance not lower than 32Ohm. TIP: in order to get the maximum audio level at a given output voltage level (dBspl/Vrms), the following breaking through procedure can be used.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 9.2. Digital Voice Interface(DVI) The product is providing one Digital Audio Interface (DVI) on the following Pins: Pin Signal I/O Function B9 DVI_WA0 I/O Digital Voice interface (WA0) B6 DVI_RX I Digital Voice interface (RX) B7 DVI_TX O Digital Voice interface (TX) B8 DVI_CLK I/O Digital Voice interface (CLK) Type 1.8V 9.2.1. CODEC Example Please refer to the Digital Voice Interface Application note.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 10. General Purpose I/O The UE910 V2 module is provided by a set of Digital Input / Output pins Input pads can only 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 UE910 V2 firmware and acts depending on the function implemented.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 10.1. Logic Level Specification 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 UE910 V2 interface circuits: Absolute Maximum Ratings -Not Functional Parameter Input level on any digital pin (CMOS 1.8) with respect to ground Min -0.3V Max 2.3V Operating Range - Interface levels (1.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 10.3. Using a GPIO Pad as Output 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. 10.4. Indication of Network Service Availability The STAT_LED pin status shows information on the network service availability and Call status.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 10.5. RTC Bypass Output 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.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 11. ADC section 11.1. Description The on board ADC is 12-bit converter. It is able to read a voltage level in the range of 0 ~ 1.2 volts applied on the ADC pin input and store and convert it into 12 bit word. Parameter Input Voltage range AD conversion Resolution Input Resistance Min 0 1 Max 1.2 10 2 Units Volt bits mV Mohm The UE910 V2 provides one Analog to Digital Converter.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 12. Mounting UE910 V2 on the Application 12.1. General The UE910 V2 has been designed in order to be compliant with a standard lead-free SMT process. 12.2. Module Finishing & Dimensions The UE910 V2 overall dimensions are: Length : 28.2 mm Width : 28.2 mm Thickness : 2.2 mm Weight : 4.1 g Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 12.3. Recommended foot print for the application 144 pins < Top View > In order to easily rework the UE910 V2 it is suggested to consider having a 1.5 mm placement inhibit area around the module on the application. It is also suggested, as a common rule for an SMT component, to avoid having a mechanical part of the application in direct contact with the module.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 12.4. Stencil Stencil’s apertures layout can be the same as the recommended footprint (1:1). A suggested thickness of stencil foil ≥ 120 µm. 12.5. PCB Pad Design Non solder mask defined (NSMD) type is recommended for the solder pads on the PCB. Copper pad Solder mask Copper pad PCB Solder Mask Defined 12.6.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 Holes in pad are allowed only for blind holes and not for through holes. Recommendations for PCB Pad Surfaces: Finish Electro-less Ni / Immersion Au Layer thickness (um) 3 ~ 7 / 0.05 ~ 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.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 12.7. Solder Paste Solder Paste Lead free Sn/Ag/Cu We recommend using only “no clean” solder paste in order to avoid the cleaning of the modules after assembly. 12.7.1.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 Profile Feature Pb-Free Assembly Time within 5℃ of actual Peak Temperature (tP) 10 ~30 seconds Ramp-down Rate 6 ℃/sec max Time 25℃ to Peak Temperature 8 minutes max NOTE: All temperatures refer to topside of the package, measured on the package body surface. WARNING: The UE910 V2 module withstands one reflow process only. Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 13. Packing System The UE910 V2 modules are packaged on trays of 20 pieces each. These trays can be used in SMT processes for pick & place handling. Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 13.1. Moisture Sensibility The UE910 V2 is a Moisture Sensitive Device level 3, in accordance with standard IPC/JEDEC JSTD-020, take care all the relative requirements for using this kind of components. Moreover, the customer has to take care of the following conditions: a) Calculated shelf life in sealed bag: 12 months at < 40°C and 90% relative humidity (RH).
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 14. Application Design Guide 14.1. Download and Debug Port One of the following options should be chosen in the design of host system in order to download or upgrade the Telit’s software and debug UE910 V2 when UE910 V2 is already mounted on a host system. CASE I: Users who use both of UART and USB interfaces to communicate with UE910 V2 - Must implement a download method in a host system for upgrading UE910 V2 when it’s mounted.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 15. Conformity Assessment Issues(Problèmes d'évaluation de conformité) 15.1. 1999/5EC Directive The Telit UE910-EU V2 module has been evaluated against the essential requirements of the 1999/5/EC Directive. 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: AT4 wireless S.A.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 15.2. FCC/IC Regulatory notices 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. Interference statement This device complies with Part 15 of the FCC Rules and Industry Canada license-exempt RSS standard(s).
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 Host system including UE910-NA V2 must be labeled with “Contains FCC ID:RI7UE910NAV2 and IC ID:5131A-UE910NAV2”. Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 16. Safety Recommendations 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.
UE910 V2 Hardware User Guide 1VV0301065 Rev.1 – 2013-12-12 17. Document History Revision 0 1 Date 2013-08-22 2013-12-12 Changes Preliminary release Changed Audio block diagram Added Conformity Assessment Issues Updated FCC/IC Regulatory notices Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved.
