Telit Wireless Solutions UL865-N3G Hardware User's Manual
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Telit Wireless Solutions UL865-N3G Hardware User's Manual

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

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Summary of Contents for Telit Wireless Solutions UL865-N3G

  • Page 1 UL865-N3G V2 Hardware User Guide 1VV0301177 Rev 2– 2015-04-20...
  • Page 2 UL865-N3G Hardware User Guide 1VV0301177 Rev 2– 2015-04-20 APPLICABILITY TABLE PRODUCT UL865-N3G V2 Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved. Page 2 of 70 Mod. 0805 2011-07 Rev.2...
  • Page 3 UL865-N3G Hardware User Guide 1VV0301177 Rev 2– 2015-04-20 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.
  • Page 4 UL865-N3G Hardware User Guide 1VV0301177 Rev 2– 2015-04-20 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.

  • Page 5: Table Of Contents

    4.2. Debug in Production ........16 4.3. Pin Layout ..........17 Hardware Commands ........... 18 5.1. Auto-Turning ON the UL865-N3G V2 ......18 5.2. Turning OFF the UL865-N3G V2 ......21 5.3. Resetting the UL865-N3G V2 ....... 22 5.3.1. Hardware Unconditional restart ......22 Power Supply ..........
  • Page 6 UL865-N3G Hardware User Guide 1VV0301177 Rev 2– 2015-04-20 7.7. Antenna Requirements ........33 7.7.1. UL865-N3G V2 Antenna – PCB line Guidelines ....34 7.8. PCB Guidelines in case of FCC certification ....35 7.8.1. Transmission line design ........35 7.8.2.
  • Page 7 14.2.1. Description ..........56 14.2.2. Using ADC Converter ........56 14.3. VAUX Power Output ........57 15. Mounting the UL865-N3G V2 on your Board ..... 58 15.1. General ..........58 15.2. Module finishing & dimensions ......58 15.3. Recommended foot print for the application ..... 59 15.4.

  • Page 8: Introduction

    1.1. Scope The aim of this document is the description of some hardware solutions useful for developing a product with the Telit UL865-N3G V2 module. 1.2. Audience This document is intended for Telit customers, who are integrators, about to implement their applications using our UL865-N3G V2 modules.

  • Page 9: Document Organization

    Chapter 8: “Logic Level specifications” Specific values adopted in the implementation of logic levels for this module. Chapter 9: “USB ports” The serial port on the Telit UL865-N3G V2 is the core of the interface between the module and OEM hardware Chapter 10: “Serial ports”...

  • Page 10: Text Conventions

    UL865-N3G Hardware User Guide 1VV0301177 Rev 2– 2015-04-20 1.5. Text Conventions Danger – This information MUST be followed or catastrophic equipment failure or bodily injury may occur. Caution or Warning – Alerts the user to important points about integrating the module, if these points are not followed, the module and end user equipment may fail or malfunction.

  • Page 11: Document History

    UL865-N3G Hardware User Guide 1VV0301177 Rev 2– 2015-04-20 1.7. Document History Revision Date Changes Rev 0 2014-10-13 Preliminary Version Rev.1 2015-04-01 Added par. 17/18 Rev.2 2015-04-20 Updated chapter 12 Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved.

  • Page 12: Overview

    Telit UL865-N3G V2 module. For further hardware details that may not be explained in this document refer to the Telit UL865-N3G V2 Product Description document where all the hardware information is reported.

  • Page 13: Ul865-N3G V2 Mechanical Dimensions

    UL865-N3G Hardware User Guide 1VV0301177 Rev 2– 2015-04-20 UL865-N3G V2 Mechanical Dimensions The UL865-N3G V2 overall dimensions are: Length: 24.4 mm Width: 24.4 mm Thickness: 2.6 mm Weight Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved.

  • Page 14: Ul865-N3G V2 Module Connections

    UL865-N3G Hardware User Guide 1VV0301177 Rev 2– 2015-04-20 UL865-N3G V2 module connections 4.1. PIN-OUT Signal Function Note Type Audio USB_D+ USB differential Data (+) USB_D- USB differential Data (-) USB_VBUS Power sense for the internal USB transceiver. SIM card interface SIMVCC External SIM signal –...
  • Page 15 UL865-N3G Hardware User Guide 1VV0301177 Rev 2– 2015-04-20 Signal Function Note Type Antenna Antenna pad – 50 Ω GPIO GPIO01 Configurable GPIO GPIO_01 / DVI_WA0 CMOS 1.8V / Digital Audio Interface (WA0) GPIO02 I/O pin GPIO_02 / JDR / / Jammer Detect Report CMOS 1.8V...

  • Page 16: Debug In Production

    To test and debug the assembled UL865-N3G V2, we strongly recommend foreseeing test pads on the host PCB, in order to check the connection between the UL865-N3G V2 itself and the application and to test the performance of the module connecting it with an external computer.

  • Page 17: Pin Layout

    UL865-N3G Hardware User Guide 1VV0301177 Rev 2– 2015-04-20 4.3. Pin Layout TOP VIEW NOTE: The pins defined as NC/RFU shall be considered RESERVED and must not be connected to any pin in the application. Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved.

  • Page 18: Hardware Commands

    5.1. Auto-Turning ON the UL865-N3G V2 The UL865-N3G V2 will automatically power on itself when VBATT & VBATT_PA are applied to the module. V_AUX / PWRMON pin will be at the high logic level and the module can be considered fully operating after 5 seconds.
  • Page 19 NOTE: In order to prevent a back powering effect it is recommended to avoid having any HIGH logic level signal applied to the digital pins of the UL865-N3G V2 when the module is powered OFF or during an ON/OFF transition.
  • Page 20 UL865-N3G Hardware User Guide 1VV0301177 Rev 2– 2015-04-20 A flow chart showing the AT commands managing procedure is displayed below: Start AT CMD. Delay 300mS Enter AT<CR> AT init sequence. AT answer in 1second? Disconnect PWR supply Modem ON Proc.

  • Page 21: Turning Off The Ul865-N3G V2

    NOTE: In order to prevent a back powering effect it is recommended to avoid having any HIGH logic level signal applied to the digital pins of the UL865-N3G V2 when the module is powered off or during an ON/OFF transition.

  • Page 22: Resetting The Ul865-N3G V2

    Resetting the UL865-N3G V2 5.3.1. Hardware Unconditional restart To unconditionally reboot the UL865-N3G V2, 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.
  • Page 23 UL865-N3G Hardware User Guide 1VV0301177 Rev 2– 2015-04-20 A simple circuit to do it is: Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved. Page 23 of 70 Mod. 0805 2011-07 Rev.2...
  • Page 24 NOTE: In order to prevent a back powering effect it is recommended to avoid having any HIGH logic level signal applied to the digital pins of the UL865-N3G V2 when the module is powered OFF or during an ON/OFF transition.

  • Page 25: Power Supply

    UL865-N3G Hardware User Guide 1VV0301177 Rev 2– 2015-04-20 Power Supply The power supply circuitry and board layout are a very important part in the full product design and they strongly reflect on the product overall performance, hence read the requirements carefully and the guidelines that will follow for a proper design.

  • Page 26: Power Consumption

    UL865-N3G Hardware User Guide 1VV0301177 Rev 2– 2015-04-20 6.2. Power Consumption UL865-N3G V2 Mode Average (mA) Mode description SWITCHED OFF Module supplied but Switched Off Switched Off 180 uA IDLE mode (WCDMA) AT+CFUN=5 Disabled TX and RX; DRX7 Operative mode (WCDMA)
  • Page 27  A Bypass low ESR capacitor of adequate capacity must be provided in order to cut the current absorption peaks close to the UL865-N3G V2, 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.
  • Page 28  A protection diode should be inserted close to the power input, in order to save the UL865-N3G V2 from power polarity inversion. This can be the same diode as for spike protection. An example of switching regulator with 12V input is in the below schematic: Reproduction forbidden without written authorization from Telit Communications S.p.A.
  • Page 29 UL865-N3G V2 and damage it. NOTE: DON'T USE any Ni-Cd, Ni-MH, and Pb battery types directly connected with UL865- N3G V2. Their use can lead to overvoltage on the UL865-N3G V2 and damage it. USE ONLY Li-Ion battery types. ...

  • Page 30: Thermal Design Guidelines

    For the heat generated by the UL865-N3G V2, you can consider it to be during transmission 1W max during CSD/VOICE calls. This generated heat will be mostly conducted to the ground plane under the UL865-N3G V2;...

  • Page 31: Power Supply Pcb Layout Guidelines

     The Bypass low ESR capacitor must be placed close to the Telit UL865-N3G V2 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-N3G V2 is wide enough to ensure a dropless connection even during the 2A current peaks.
  • Page 32 UL865-N3G Hardware User Guide 1VV0301177 Rev 2– 2015-04-20  The power supply input cables should be kept separate from noise sensitive lines such as microphone/earphone cables.  The insertion of EMI filter on VBATT pins is suggested in those designs where antenna is placed close to battery or supply lines.

  • Page 33: Radio Section

    The antenna and antenna transmission line on PCB for a Telit UL865-N3G V2 device shall fulfill the following requirements:...

  • Page 34: Ul865-N3G V2 Antenna - Pcb Line Guidelines

    In the case that the antenna is not directly developed on the same PCB, hence directly connected at the antenna pad of the UL865-N3G V2, then a PCB line is needed in order to connect with it or with its connector.

  • Page 35: Pcb Guidelines In Case Of Fcc Certification

    7.8. PCB Guidelines in case of FCC certification In the case FCC certification is required for an application using UL865-N3G V2, according to FCC KDB 996369 for modular approval requirements, the transmission line has to be similar to that implemented on UL865-N3G V2 interface board and described in the following chapter.

  • Page 36: Transmission Line Measurements

    UL865-N3G Hardware User Guide 1VV0301177 Rev 2– 2015-04-20 7.8.2. Transmission line measurements 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 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.
  • Page 37 UL865-N3G Hardware User Guide 1VV0301177 Rev 2– 2015-04-20 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: Reproduction forbidden without written authorization from Telit Communications S.p.A.

  • Page 38: Antenna - Installation Guidelines

    UL865-N3G Hardware User Guide 1VV0301177 Rev 2– 2015-04-20 7.9. Antenna - Installation Guidelines 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 co- located transmitter then the Telit FCC/IC approvals can be re-used by the end product.

  • Page 39: Logic Level Specifications

    1VV0301177 Rev 2– 2015-04-20 Logic level specifications 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-N3G V2 interface circuits: Absolute Maximum Ratings -Not Functional...

  • Page 40: Reset Signal

    RESET* Phone reset RESET* is used to reset the UL865-N3G V2. Whenever this signal is pulled low, the UL865- N3G V2 is reset. When the device is reset it stops any operation. After the release of the reset UL865-N3G V2 is unconditionally shut down, without doing any detach operation from the network where it is registered.

  • Page 41: Usb Port

    UL865-N3G Hardware User Guide 1VV0301177 Rev 2– 2015-04-20 USB Port The UL865-N3G V2 includes one integrated universal serial bus (USB) transceiver. 9.1. USB 2.0 HS This port is compliant with the USB 2.0 HS only. The following table is listing the available signals:...

  • Page 42: Spi Port

    1VV0301177 Rev 2– 2015-04-20 SPI Port The UL865-N3G V2 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).

  • Page 43: Serial Ports

    The only configuration that doesn't need a level translation is the 1.8V UART. The serial port on the UL865-N3G V2 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...
  • Page 44 UL865-N3G Hardware User Guide 1VV0301177 Rev 2– 2015-04-20 The signals of the UL865-N3G V2 serial port are: RS232 Pin UL865-N3G V2 Signal Name Usage Number Pad Number Output from the UL865-N3G V2 that DCD - dcd_uart Data Carrier Detect indicates the carrier presence...

  • Page 45: Modem Serial Port 2

    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-N3G V2 when the module is powered off or during an ON/OFF transition.

  • Page 46: Rs232 Level Translation

    1VV0301177 Rev 2– 2015-04-20 11.3. RS232 level translation In order to interface the UL865-N3G 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;...
  • Page 47 UL865-N3G Hardware User Guide 1VV0301177 Rev 2– 2015-04-20 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).

  • Page 48: Audio Section Overview

    1VV0301177 Rev 2– 2015-04-20 Audio Section Overview The Base Band Chip of the UL865-N3G V2 provides one Digital Audio Interface. Please refer to the UL865-N3G V2 DVI Application Note for additional details on this function. General Purpose I/O The general purpose I/O pads can be configured to act in three different ways: ...
  • Page 49 UL865-N3G Hardware User Guide 1VV0301177 Rev 2– 2015-04-20 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. Input / State Default ON_OFF Signal Function Type output...

  • Page 50: Gpio Logic Levels

    1VV0301177 Rev 2– 2015-04-20 13.1. GPIO Logic levels 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-N3G V2 interface circuits: Absolute Maximum Ratings -Not Functional Parameter Input level on any digital pin -0.3V...

  • Page 51: Using A Gpio Pad As Input

    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-N3G V2 when the module is powered OFF or during an ON/OFF transition.

  • Page 52: Indication Of Network Service Availability

    The function is available as alternate function of GPIO_08 (to be enabled using the AT#GPIO=8,0,2 command). In the UL865-N3G V2 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.

  • Page 53: Simin Detect Function

    UL865-N3G Hardware User Guide 1VV0301177 Rev 2– 2015-04-20 13.5. SIMIN detect function 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...

  • Page 54: Dac And Adc Section

    DAC Converter 14.1.1. Description The UL865-N3G V2 provides a Digital to Analog Converter. The signal (named DAC_OUT) is available on pin 15 of the UL865-N3G V2. 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.

  • Page 55: 14.1.2. Enabling Dac

    UL865-N3G Hardware User Guide 1VV0301177 Rev 2– 2015-04-20 14.1.2. Enabling DAC An AT command is available to use the DAC function. The command is: AT#DAC= [<enable> [, <value>]] <value> - scale factor of the integrated output voltage (0..1023 - 10 bit precision) it must be present if <enable>=1...

  • Page 56: Adc Converter

    ADC Converter 14.2.1. Description The UL865-N3G V2 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.

  • Page 57: Vaux Power Output

    UL865-N3G Hardware User Guide 1VV0301177 Rev 2– 2015-04-20 14.3. VAUX Power Output 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.

  • Page 58: Mounting The Ul865-N3G V2 On Your Board

    1VV0301177 Rev 2– 2015-04-20 Mounting UL865-N3G your Board 15.1. General The UL865-N3G V2 modules have been designed to be compliant with a standard lead-free SMT process. 15.2. Module finishing & dimensions Pin 1 Lead-free Alloy: Surface finishing Ni/Au for all solder pads...

  • Page 59: Recommended Foot Print For The Application

    15.3. Recommended foot print for the application In order to easily rework the UL865-N3G V2 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.

  • Page 60: Stencil

    UL865-N3G Hardware User Guide 1VV0301177 Rev 2– 2015-04-20 15.4. Stencil Stencil’s apertures layout can be the same of the recommended footprint (1:1), we suggest a thickness of stencil foil ≥ 120µm. 15.5. PCB pad design Non solder mask defined (NSMD) type is recommended for the solder pads on the PCB.

  • Page 61: Recommendations For Pcb Pad Dimensions (Mm)

    UL865-N3G Hardware User Guide 1VV0301177 Rev 2– 2015-04-20 15.6. Recommendations for PCB pad dimensions (mm): 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).

  • Page 62: Solder Paste

    UL865-N3G Hardware User Guide 1VV0301177 Rev 2– 2015-04-20 Holes in pad are allowed only for blind holes and not for through holes. Recommendations for PCB pad surfaces: Finish Layer thickness [µm] Properties good solder ability protection, Electro-less Ni / Immersion Au 3 –7 / 0.03 –...
  • Page 63 All temperatures refer to topside of the package, measured on the package body surface WARNING: The UL865-N3G V2 module withstands one reflow process only. Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved. Page 63 of 70...

  • Page 64: Packing System

    16.1. Packing on tray The UL865-N3G 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.
  • Page 65 UL865-N3G Hardware User Guide 1VV0301177 Rev 2– 2015-04-20 Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved. Page 65 of 70 Mod. 0805 2011-07 Rev.2...

  • Page 66: Packing In Reel

    UL865-N3G Hardware User Guide 1VV0301177 Rev 2– 2015-04-20 16.2. Packing in Reel Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved. Page 66 of 70 Mod. 0805 2011-07 Rev.2...

  • Page 67: Moisture Sensitivity

    UL865-N3G Hardware User Guide 1VV0301177 Rev 2– 2015-04-20 16.3. Moisture sensitivity The moisture sensitivity level of the Product is “3” according with standard IPC/JEDEC J- STD-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 <...

  • Page 68: Safety Recommandations

    UL865-N3G Hardware User Guide 1VV0301177 Rev 2– 2015-04-20 SAFETY RECOMMANDATIONS 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.

  • Page 69: Fcc/Ic Regulatory Notices

    UL865-N3G Hardware User Guide 1VV0301177 Rev 2– 2015-04-20 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.
  • Page 70 UL865-N3G Hardware User Guide 1VV0301177 Rev 2– 2015-04-20 L'émetteur ne doit pas être colocalisé ni fonctionner conjointement avec à autre antenne ou autreémetteur. 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.

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