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Related Manuals for Telit Wireless Solutions UL865N3G
Summary of Contents for Telit Wireless Solutions UL865N3G
- Page 1 UL865N3G HW User Guide 1VV0301114 Rev. 3 – 2017-05-24 Mod. 0805 2017-01 Rev.6...
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Page 2: Notice
UL865N3G Hardware User Guide SPECIFICATIONS ARE 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 3: Usage And Disclosure Restrictions
UL865N3G Hardware User Guide 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 4: Applicability Table
UL865N3G Hardware User Guide APPLICABILITY TABLE PRODUCTS UL865-N3G 1VV0301114 Rev. 3 Page 4 of 77 2017-05-24... -
Page 5: Table Of Contents
UL865N3G Hardware User Guide Contents NOTICE ..................... 2 COPYRIGHTS ....................2 COMPUTER SOFTWARE COPYRIGHTS ............2 USAGE AND DISCLOSURE RESTRICTIONS ..........3 License Agreements ..............3 Copyrighted Materials ..............3 III. High Risk Materials ............... 3 Trademarks .................. 3 Third Party Rights ................. 3 APPLICABILITY TABLE ................ - Page 6 UL865N3G Hardware User Guide Power Supply Requirements ............28 Power Consumption ..............29 General Design Rules ..............29 6.3.1. Electrical Design Guidelines ............29 6.3.1.1. +5V Source Power Supply Design Guidelines ......30 6.3.1.2. + 12V input Source Power Supply Design Guidelines ....31 6.3.1.3.
- Page 7 UL865N3G Hardware User Guide RTC Bypass out ................57 SIM Holder Implementation ............57 DAC AND ADC SECTION ............58 DAC Converter ................58 14.1.1. Description .................. 58 14.1.2. Enabling DAC ................58 14.1.3. Low Pass Filter Example ............59 ADC Converter ................
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Page 8: Introduction
UL865N3G Hardware User Guide INTRODUCTION Scope The aim of this document is the description of some hardware solutions useful for developing a product with the Telit UL865-N3G module. Audience This document is intended for Telit customers, who are integrators, about to implement their applications using our UL865-N3G modules. -
Page 9: Document Organization
UL865N3G Hardware User Guide Document Organization This document contains the following chapters: “Introduction” provides a scope for this document, target audience, Chapter 1: contact and support information, and text conventions. “Overview” provides an overview of the document. Chapter 2: “UL865-N3G Mechanical Dimensions”... -
Page 10: Text Conventions
UL865N3G Hardware User Guide 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: Related Documents
UL865N3G Hardware User Guide Related Documents Digital Voice Interface Application Note, 80000NT10050A SPI Port Application Note, 80000NT10053A SIM Holder Design Guides, 80000NT10001a AT Commands Reference Guide, 80378ST10091A Telit EVK2 User Guide, 1vv0300704 1VV0301114 Rev. 3... -
Page 12: Overview
UL865N3G Hardware User Guide OVERVIEW The aim of this document is the description of some hardware solutions useful for developing a product with the Telit UL865-N3G 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. - Page 13 UL865N3G Hardware User Guide 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.
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Page 14: Ul865-N3G Mechanical Dimensions
UL865N3G Hardware User Guide UL865-N3G MECHANICAL DIMENSIONS The UL865-N3G overall dimensions are: Length: 24.4 mm Width: 24.4 mm Thickness: 2.6 mm Weight 1VV0301114 Rev. 3 Page 14 of 77 2017-05-24... -
Page 15: Ul865-N3G Module Connections
UL865N3G Hardware User Guide UL865-N3G MODULE CONNECTIONS Pin-out Signal I/O 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 External SIM signal – SIMVCC... - Page 16 UL865N3G Hardware User Guide Prog. / Data + HW Flow Control C109/DCD Output for Data carrier CMOS 1.8V /GPO detect signal (DCD) to DTE / GP output C125/RING Output for Ring indicator CMOS 1.8V /GPO signal (RI) to DTE / GP output...
- Page 17 UL865N3G Hardware User Guide Miscellaneous Functions VRTC backup for the embedded Power RTC supply (1.8V) RESET* Reset Input CMOS 1.8V V_AUX / 1.8V stabilized output Power Out PWRMON Imax=100mA 1.8V / Power ON monitor Antenna pad – 50 Ω Antenna...
- Page 18 UL865N3G Hardware User Guide Power Supply VBATT Main power supply Power (Baseband) VBATT_PA Main power supply Power (Radio PA) AGND AF Signal Ground AF Signal (see audio section) Ground Power Ground Power Ground Power Ground Power Ground Power Ground RESERVED 1VV0301114 Rev.
- Page 19 UL865N3G Hardware User Guide WARNING: Reserved pins must not be connected. NOTE: If not used, almost all pins should be left disconnected. The only exceptions are the following pins: Signal 38, 37 VBATT & VBATT_PA 32, 33, 35, 36, 46...
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Page 20: Debug In Production
UL865N3G Hardware User Guide USB D- If not used should be connected to a Test Point or an USB connector USB_VBUS If not used should be connected to a Test Point or an USB connector Debug in Production To test and debug the assembled UL865-N3G, we strongly recommend foreseeing test... -
Page 21: Pin Layout
UL865N3G Hardware User Guide 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. 1VV0301114 Rev. 3 Page 21 of 77 2017-05-24... -
Page 22: Hardware Commands
UL865N3G Hardware User Guide HARDWARE COMMANDS Auto-Turning ON the UL865-N3G The UL865-N3G 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 23 UL865N3G Hardware User Guide NOTE: To guarantee a correct module’s start-up please check that the Power Supply is with a level >3.22V within 21mS. NOTE: In order to prevent a back powering effect it is recommended to avoid having any HIGH logic level signal applied to the digital pins of the UL865-N3G when the module is powered OFF or during an ON/OFF transition.
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Page 24: Turning Off The Ul865-N3G
UL865N3G Hardware User Guide Turning OFF the UL865-N3G The following flow chart shows the proper turnoff procedure: Modem OFF Proc. AT#SYSHALT 10s timeout Disconnect PWR supply Modem ON Proc. Delay 1.5s NOTE: In order to prevent a back powering effect it is recommended to avoid... -
Page 25: Resetting The Ul865-N3G
UL865N3G Hardware User Guide Resetting the UL865-N3G 5.3.1. Hardware Unconditional restart To unconditionally reboot the UL865-N3G, 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 26 UL865N3G Hardware User Guide A simple circuit to do it is: 1VV0301114 Rev. 3 Page 26 of 77 2017-05-24...
- Page 27 UL865N3G Hardware User Guide 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...
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Page 28: Power Supply
UL865N3G Hardware User Guide 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 29: Power Consumption
UL865N3G Hardware User Guide Power Consumption 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) WCDMA Voice WCDMA voice call (TX = 10dBm) -
Page 30: Source Power Supply Design Guidelines
UL865N3G Hardware User Guide 6.3.1.1. +5V Source Power Supply Design Guidelines The desired output for the power supply is 3.8V, hence there's not a big difference between the input source and the desired output and a linear regulator can be used. -
Page 31: Input Source Power Supply Design Guidelines
UL865N3G Hardware User Guide 6.3.1.2. + 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 suited and shall not be used. -
Page 32: Battery Source Power Supply Design Guidelines
UL865N3G Hardware User Guide 6.3.1.3. 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, hence a single 3.7V Li-Ion cell battery type is suited for supplying the power to the Telit UL865-N3G module. -
Page 33: Thermal Design Guidelines
UL865N3G Hardware User Guide 6.3.2. Thermal Design Guidelines 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: 600 mA Average current during idle: 1.5 mA... - Page 34 UL865N3G Hardware User Guide 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.
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Page 35: Radio Section
UL865N3G Hardware User Guide RADIO SECTION TX Output Power Band Power Class WCDMA FDD B2, B5 Class 3 (0.25W) Sensitivity Band Typical Note WCDMA FDD B2 -110 dBm BER <0.1% WCDMA FDD B5 -111 dBm BER <0.1% Antenna requirements 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. -
Page 36: Ul865-N3G Antenna - Pcb Line Guidelines
UL865N3G Hardware User Guide UL865-N3G Antenna – PCB line Guidelines 7.3.1. When using the Telit UL865-N3G module, since there's no antenna connector on the module, the antenna must be connected to the UL865-N3G through the PCB with the antenna pad (pin 34). -
Page 37: Pcb Guidelines In Case Of Fcc Certification
UL865N3G Hardware User Guide PCB Guidelines in case of FCC Certification In the case FCC certification is required for an application using UL865-N3G, according to FCC KDB 996369 for modular approval requirements, the transmission line has to be similar to that implemented on UL865-N3G interface board and described in the following chapter. -
Page 38: Transmission Line Measurements
UL865N3G Hardware User Guide 7.4.2. 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 39: Antenna - Installation Guidelines
UL865N3G Hardware User Guide Insertion Loss of G-CPW line plus SMA connector is shown below: 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 40: Logic Level Specifications
UL865N3G Hardware User Guide 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 interface circuits: ABSOLUTE MAXIMUM RATINGS – NOT FUNCTIONAL Parameter Input level on any digital pin (CMOS 1.8) when on... -
Page 41: Reset Signal
UL865N3G Hardware User Guide Reset signal Signal Function RESET* Phone reset RESET* is used to reset the UL865-N3G. Whenever this signal is pulled low, the UL865- N3G is reset. When the device is reset it stops any operation. After the release of the reset UL865-N3G is unconditionally shut down, without doing any detach operation from the network where it is registered. -
Page 42: Usb Port
UL865N3G Hardware User Guide USB PORT The UL865-N3G includes one integrated universal serial bus (USB) transceiver. USB 2.0 HS This port is compliant with the USB 2.0 HS only. The following table is listing the available signals: Signal Function Type... -
Page 43: Spi Port
UL865N3G Hardware User Guide SPI PORT The UL865-N3G 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 44: Spi Connections
UL865N3G Hardware User Guide SPI Connections 1VV0301114 Rev. 3 Page 44 of 77 2017-05-24... -
Page 45: Serial Ports
UL865N3G Hardware User Guide SERIAL PORTS The serial port on the UL865-N3G 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) ... - Page 46 UL865N3G Hardware User Guide The signals of the UL865-N3G serial port are: RS232 Signal UL865-N3G Name Usage Number Number DCD - dcd_uart Data Carrier Output from the UL865-N3G Detect that indicates the carrier presence RXD - tx_uart Transmit line Output transmit line...
- Page 47 UL865N3G Hardware User Guide 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 RTS DTR TXD Pull up tied to 5K to 12K Schottky diode...
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Page 48: Modem Serial Port 2
UL865N3G Hardware User Guide 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... -
Page 49: Rs232 Level Translation
UL865N3G Hardware User Guide 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 when the module is powered off or during an ON_OFF transition. - Page 50 UL865N3G Hardware User Guide 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).
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Page 51: Audio Section Overview
UL865N3G Hardware User Guide AUDIO SECTION OVERVIEW The Base Band Chip of the UL865-N3G provides one Digital Audio Interface. Please refer to the UL865-N3G DVI Application Note for additional details on this function. 1VV0301114 Rev. 3 Page 51 of 77... -
Page 52: General Purpose I/O
UL865N3G Hardware User Guide GENERAL PURPOSE I/O 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. - Page 53 UL865N3G Hardware User Guide 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. WARNING During power up the GPIOs may be subject to transient glitches.
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Page 54: Gpio Logic Levels
UL865N3G Hardware User Guide 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 interface circuits: ABSOLUTE MAXIMUM RATINGS – NOT FUNCTIONAL: Parameter Input level on any digital pin (CMOS 1.8) when on... -
Page 55: Using A Gpio Pad As Input
UL865N3G Hardware User Guide Using a GPIO Pad as INPUT 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. -
Page 56: Indication Of Network Service Availability
UL865N3G Hardware User Guide Indication of network service availability 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-N3G modules, the STAT_LED needs an external transistor to drive an external LED. -
Page 57: Simin Detect Function
UL865N3G Hardware User Guide 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 profile. -
Page 58: Dac And Adc Section
UL865N3G Hardware User Guide DAC AND ADC SECTION DAC Converter 14.1.1. Description The UL865-N3G provides a Digital to Analog Converter. The signal (named DAC_OUT) is available on pin 15 of the UL865-N3G. 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 59: Low Pass Filter Example
UL865N3G Hardware User Guide 14.1.3. Low Pass Filter Example ADC Converter 14.2.1. Description The UL865-N3G 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 60: Using Adc Converter
UL865N3G Hardware User Guide 14.2.2. Using ADC Converter 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. -
Page 61: Mounting The Ul865-N3G On Your Board
UL865N3G Hardware User Guide MOUNTING THE UL865-N3G ON YOUR BOARD General The UL865-N3G modules have been designed to be compliant with a standard lead-free SMT process. Module finishing & dimensions Pin 1 Lead-free Alloy: Surface finishing Ni/Au for all solder pads... -
Page 62: Recommended Foot Print For The Application
UL865N3G Hardware User Guide Recommended foot print for the application In order to easily rework the UL865-N3G 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 63: Stencil
UL865N3G Hardware User Guide Stencil Stencil’s apertures layout can be the same of the recommended footprint (1:1), we suggest a thickness of stencil foil ≥ 120µm. PCB pad design Non solder mask defined (NSMD) type is recommended for the solder pads on the PCB. -
Page 64: Recommendations For Pcb Pad Dimensions (Mm)
UL865N3G Hardware User Guide 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 65: Solder Paste
UL865N3G Hardware User Guide Recommendations for PCB pad surfaces: Finish Layer thickness [µm] Properties 3 –7 / 0.03 – 0.15 Electro-less Ni / good solder ability protection, Immersion Au high shear force values The PCB must be able to resist the higher temperatures which are occurring at the lead- free process. -
Page 66: Ul865-N3G Solder Reflow
UL865N3G Hardware User Guide UL865-N3G Solder reflow Recommended solder reflow profile Tsmax Tsmin 1VV0301114 Rev. 3 Page 66 of 77 2017-05-24... - Page 67 UL865N3G Hardware User Guide Profile Feature Pb-Free Assembly Average ramp-up rate (TL to TP) 3°C/second max Preheat – Temperature Min (Tsmin) 150°C – Temperature Max (Tsmax) 200°C – Time (min to max) (ts) 60-180 seconds Tsmax to TL – Ramp-up Rate 3°C/second max...
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Page 68: Packing System
UL865N3G Hardware User Guide PACKING SYSTEM Packing on tray The UL865-N3G modules are packaged on trays of 20 pieces each. These trays can be used in SMT processes for pick & place handling. 1VV0301114 Rev. 3 Page 68 of 77... - Page 69 UL865N3G Hardware User Guide 1VV0301114 Rev. 3 Page 69 of 77 2017-05-24...
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Page 70: Packing In Reel
UL865N3G Hardware User Guide Packing in Reel 1VV0301114 Rev. 3 Page 70 of 77 2017-05-24... -
Page 71: Moisture Sensitivity
UL865N3G Hardware User Guide 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 72: Conformity Assessment Issues
UL865N3G Hardware User Guide CONFORMITY ASSESSMENT ISSUES 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. Telit n’approuve aucune modification apportée à l’appareil par l’utilisateur, quelle qu’en soit la nature. - Page 73 UL865N3G Hardware User Guide 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:...
- Page 74 UL865N3G Hardware User Guide 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...
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Page 75: Safety Recommendations
UL865N3G Hardware User Guide 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: ... -
Page 76: Document History
UL865N3G Hardware User Guide DOCUMENT HISTORY Revision Date Changes 2013-11-20 Preliminary Version 2013-12-16 Updated FCC IC 2014-01-13 Updated Drawings; added sensitivity; removed preliminary 2017-05-24 2017 Template Applied 1VV0301114 Rev. 3 Page 76 of 77 2017-05-24... - Page 77 Mod. 0805 2017-01 Rev.6...
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