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DE910-DUAL Hardware User Guide

1. Reproduction forbidden without written authorizatio Pin Signal I O Function Type R6 GND Ground P8 GND Ground R8 GND Ground P9 GND Ground P10 GND Ground R10 GND Ground M12 GND Ground B13 GND Ground P13 GND Ground E14 GND Ground Reserved C1 Reserved Reserved D1 Reserved Reserved F1 Reserved Reserved C2 Reserved Reserved D2 Reserved Reserved C3 Reserved Reserved D3 Reserved Reserved E3 Reserved Reserved F3 Reserved Reserved G3 Reserved Reserved H3 Reserved Reserved J3 Reserved Reserved K3 Reserved Reserved L3 Reserved Reserved C4 Reserved Reserved C5 Reserved Reserved C6 Reserved Reserved C7 Reserved Reserved N7 Reserved Reserved P7 Reserved Reserved R7 Reserved Reserved A8 Reserved Reserved N8 Reserved Reserved A9 Reserved Reserved N9 Reserved Reserved R9 Reserved Reserved A10 Reserved Reserved B10 Reserved Reserved N10 Reserved Reserved All Reserved Reserved B11 Reserved Reserved N11 Reserved Reserved P11 Reserved Reserved A12 Reserved Reserved B12 Reserved Reserved d D 2 GK TORN ba FS D H ane aI n from Telit Communications S p A All Rights Reserved Page 16 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013
2. NOTE Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 22 of 69 4 2 1 4 2 2 mu as lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 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 EU V2 AUTO when the module is powered OFF or during an ON OFF transition Turning OFF by AT Command The UE910 EU V2 AUTO can be shut down by a software command When a shutdown command is sent the UE910 EU V2 AUTO goes into the finalization state and will shut down PWRMON at the end of this state The period of the finalization state can vary according to the state of the UE910 EU V2 AUTO so it cannot be fixed definitely Normally it will be 10 seconds after sending a shutdown command and DTE should monitor the status of PWRMON to see the actual power off VBATTERY AT SHDN PWRMON monitoring PWRMON status Turning OFF by tying low ON OFF To turn OFF the UE910 EU V2 AUTO 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 EU V2 AUTO goes into the finalization state and will shut down PWRMON at the end of this state The period of the finalization state can vary according to the s
3. e If EM noisy devices are not present around the line use of geometries like Micro strip or Grounded Coplanar Waveguide are preferred since they typically ensure less attenuation when compared to a Strip line having same length 6 3 GSM WCDMA Antenna installation Guidelines e Install the antenna in a place covered by the GSM WCDMA signal e Ifthe device antenna in the application is located greater then 20cm from the human body and Wi y d si D e Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 35 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 there are no co located transmitters then the Telit FCC IC approvals can be re used by the end product e Antenna shall not be installed inside metal cases e Antenna shall be installed also according to antenna manufacture instructions WARNING Consider a mechanical design and a low capacitance ESD protection device to protect UE910 EU V2 AUTO 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 Page 36 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 7 USB Port The UE910 EU V2 AUTO module includes a Universal Serial Bus USB transceiver which operates at USB High speed 480Mbits sec
4. VUSB If not used it should be connected to a Test point C103 TXD If not used it should be connected to a Test point C104 RXD If not used it should be connected to a Test point If the flow control is not used it should ONSET be connected to GND C106 CTS If not used it should be connected to a Test point Main Antenna Page 18 0f 69 ADC IN1 GPIO_01 STAT_LED GPIO_02 USB_D DVI CLK D m Ei lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 P VBATT PA VBATT PA VBATT PA VBATT PA GND G K L M P N HW_SHUTD N ND ND ND ND ES ES ES ES ES ES EE OWN an Ee mm B RES lt gt amp o 0 lt D z 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 Q7 SA 25001 m l p Ie wm BEBE jn J Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 19 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 4 Hardware Commands 4 1 Turning on the UE910 EU V2 AUTO module To turn on the UE910 EU V2 AUTO 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
5. 9 C125 RI R14 Ring Indicator AUTO that indicates the incoming call condition 2 C104 RXD M15 Transmit line see Note 3 C103 TXD N15 Receive line see Note The following table shows the typical value pulled inside the baseband chipset and status for input lines in all module states Signal State OFF RESET ON Powersaving PU tied to TxD GE an Unknown 5 i Ed apium DS iov PER GE PE n E uds LE Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Ii 39 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 According to V 24 RX TX signal names are referred to the application side Therefore on the UE910 EU V2 AUTO side these signals are on the opposite direction TXD on the application side will be connected to the receive line here named C103 TXD 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 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 EU V2 AUTO when the module is powered off or during an ON OFF transition NOTE High speed UART supports up to 4Mbps Please refer to the AT command User Guide in d
6. and slave mode only It is compliant with the USB 2 0 specification and can be used for diagnostic monitoring control and data transfers The table below describes the USB interface signals Pin Signal Lo Function Type B15 USB D IO USB differential Data C15 USB D IO USB differential Data A13 VUSB I Power sense for the internal USB transceiver 5V The table below describes the VUSB specification Parameter Min Typ Max Input voltage 4 75V 5 0V 5 25V 4 WARNING Consider a mechanical design and a low capacitance ESD protection device to protect UE910 EU V2 AUTO or customer specific requirements from ESD event to USB lines B15 C15 and A13 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 8 Serial Port The serial port on the Telit UE910 EU V2 AUTO is the interface between the module and OEM hardware Only one serial port is available on the module e Modem Serial Port 1 Main Several configurations can be designed for the serial port on the OEM hardware The most common are e RS232 PC comport e Microcontroller UART 21 8V Universal Asynchronous Receiver Transmit e Microcontroller UART SV or other voltages different from 1 8V Depending on the type of serial port on the OEM hardware a level translator circuit may be needed to make the system work On the UE910 EU V2 AUTO the ports are CMOS 1 8V The electrical characteristics of the serial port are explained in th
7. the UE910 EU V2 AUTO complies with the RoHS Restriction of Hazardous Substances directive of the European Union EU directive 2002 95 EG d We S 7 se E e ee E fal PA Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 13 0f 69 Le O Telit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 3 UE910 EU V2 AUTO Module Connections 3 1 Pin Out Pin Signal HO Function Type USB HS 2 0 Communication Port B15 USB D VO USB differential Data C15 USB D I O USB differential Data A13 VUSB I Power sense for the internal USB transceiver 5V Asynchronous UART Prog data HW Flow Control N15 C103 TXD I Serial data input from DTE CMOS 1 8V MIS C104 RXD O Serial data output to DTE CMOS 1 8V M14 C108 DTR I Input for DTR from DTE CMOS 1 8V L14 CIOS RTS I Input for RTS from DTE CMOS 1 8V P15 C106 CTS O Output for CTS to DTE CMOS 1 8V N14 C109 DCD O Output for DCD to DTE CMOS 1 8V P14 C107 DSR O Output for DSR to DTE CMOS 1 8V R14 C125 RING O Output for RI to DTE CMOS 1 8V SIM Interface A3 SIMVCC External SIM signal Power supply for the SIM 1 8 3V A4 SIMIN I External SIM signal Presence active low CMOS 1 8V A5 SIMIO I O External SIM
8. 11 11 Pin Signal I O Function Type D12 Reserved Reserved N12 Reserved Reserved P12 Reserved Reserved D13 Reserved Reserved E13 Reserved Reserved F13 Reserved Reserved G13 Reserved Reserved H13 Reserved Reserved J13 Reserved Reserved K13 Reserved Reserved L13 Reserved Reserved M13 Reserved Reserved N13 Reserved Reserved A14 Reserved Reserved D14 Reserved Reserved F14 Reserved Reserved G14 Reserved Reserved H14 Reserved Reserved J14 Reserved Reserved K14 Reserved Reserved D15 Reserved Reserved E15 Reserved Reserved F15 Reserved Reserved H15 Reserved Reserved J15 Reserved Reserved WARNING Reserved pins must not be connected Page 17 0f 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 NOTE If not used almost all pins not in use must be left disconnected The only exceptions are the following pins PAD M1 M2 N1 N2 P1 P2 E1 G1 H1 J1 L1 A2 E2 F2 G2 H2 J 2 K2 L2 R2 M3 N3 P3 R3 D4 M4 N 4 P4 R4 N5 P5 R5 N6 P6 R6 P8 R8 P9 P10 R10 M12 B13 P13 E14 R12 R13 B15 IS A13 N15 M15 L14 P15 Kl Signal Notes VBATT amp VBATT PA GND ON OFF HW_SHUTDOWN USB D If not used it should be connected to a Test point USB D If not used it should be connected to a A Test point
9. UE910 EU V2 AUTO when the module is powered OFF or during an ON OFF transition i 1 f T f NL gt ET d 3 Eu B Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 26 of 69 5 1 Telit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 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 Power Supply Requirements The external power supply must be connected to VBATT amp VBATT PA signals and must fulfill the following requirements Power Supply Nominal Supply Voltage 3 8V Normal Operating Voltage range 3 4V 4 2V Extended Operating Voltage range 3 4V 4 5V NOTE The Operating Voltage Range MUST never be exceeded Special care must be taken when designing the application s power supply section to avoid having an excessive voltage drop If the voltage drop is exceeding the limits it could cause a Power Off of the module Behavior in the extended operating voltage range might deviate from 3GPP specification Page 27 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 9 2 Power Supply Requirements Current Consumption Average EE bin Mode mA Mode Description Power off current Typi
10. digital audio interface 9 1 Analog Audio Interface The UE910 EU V2 AUTO provides an analog audio interface one differential input for audio to be transmitted Uplink and a balanced output for audio to be received Downlink The bias for the microphone has to be as clean as possible the first connection single ended is preferable since the Vmic noise and ground noise are fed into the input as common mode and then rejected This sounds strange usually the connection to use in order to reject the common mode is the balanced one In this situation we have to recall that the microphone is a sound to current transducer so the resistor is the current to tension transducer so finally the resistor feeds the input in balanced way even if the configuration from a microphone point of view seems to be un balanced Y 1 d SH e y D z E Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 44 of 69 9 1 1 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 MIC Connection mic bias Telit Module ESD protection Single ended microphone connection If a balanced way is anyway desired much more care has to be taken to VMIC noise and ground noise Page 45 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 mic bias Telit Module ESD protection Differential micr
11. 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 O Telit Communications S p A Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved i Page 4 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 Contents ME nderit ccc 8 el o ce 8 PEE Ioue 8 13 Contact Information SUpport 2 23 icaisdivia tend oe Rn civ dus YOr IUE Gut 2 BAM RR Ee 8 1 4 Document tege ege Eeg
12. 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 T Beroder forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 65 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 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 EU V2 AUTO when it is already mounted on a host system CASE I Users who use both of UART and USB interfaces to communicate with UE910 EU V2 AUTO Must implement a download method in a host system for upgrading UE910 EU V2 AUTO when it s mounted CASE II Users who use USB interface only to communicate with UE910 EU V2 AUTO Must arrange UART port in a host system for debugging or upgrading UE910 EU V2 AUTO when it s mounted CASE III Users who use UART interface only to communicate with UE910 EU V2 AUTO Must arrange USB port in a host system for debugging or upgrading UE910 EU V2 AUTO when it s mounted T IG v d D d Ka M 7 1 e i es gt NG m y Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 66 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 1
13. note xE910 RTC Backup Application Note VAUX PWRMON Power Output A regulated power supply output is provided in order to supply small devices from the module This output is active when the module is ON and goes OFF when the module is shut down The operating range characteristics of the supply are Operating Range VAUX PWRMON power supply Parameter Min Typical Max Output voltage LEV 1 8V 1 83V Output current 200mA Output bypass capacitor 2 2uF Inside the module lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 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 Min Max Units Input Voltage range 0 12 Volt AD conversion 12 bits Resolution lt 1 mV Input Resistance 1 Mohm The UE910 EU V2 AUTO provides one Analog to Digital Converter The input line is named as ADC_IN1 and it is available on pad B1 11 2 Using ADC Converter An AT command is available to use the ADC function The command is ATHADC 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 d n ECH zb E I Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 54 of 69 wireless solutions
14. ree ner etn ruhu rush hy ao EEN ak an bra ra er X aa RR Pha aene Ea Ehe 02 10 4 Indication of Network Service Availabltv nnne 02 10 5 RIC Bypass QUtPUt TIT PE 53 10 6 VAUX PWRMON Power Jure read 53 t Page 6 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 T2 Jem ADU EE 54 12 Mounting UE910 EU V2 AUTO on the Application eesnnrnrernnnnnnrernnnnnnrvennnnnnnrennnnnnnvreennnn 56 DAMES c Merc 56 12 2 Module Finishing amp Duren degteee ugi deet deed ee dree theme 56 12 3 Recommended foot print for the application uua musniinsieuismrnnsmssseintsismvkviv 58 VG luv 59 125 PE Nr 59 12 6 Recommendations for PCB Pad Dimensions Tomm 59 127 Sold r PASTE pisnes sta onn aE E E A a T a a E r 61 IPAE idi RRRRRRRRREEEMMMMM 61 T3 Packing SUSEBNI E 63 c MEME S i e Illis RE RE SE 65 14 Application Design Guide 2 55 dispiace rA quoab geegent 66 14 1 Download and Debug Port z m ersaessaseenensernannasannarersaseaneansanennensennsensnnsanenneneersvneasanenennnns er 66 15 Conformity Assessment Issues Probl mes d valuation de conformit 67 16 Sale Recomirmiendallol8 usi iocos eet 68 17 one 69 Reproduct e D Lp ion forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 7 of 69 1 1 1 2 1 3 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 Introduction S
15. 0 General Purpose 1 0 The UE910 EU V2 AUTO 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 EU V2 AUTO firmware and acts depending on the function implemented The following GPIOs are available on the UE910 EU V2 AUTO Default Pin Signal I O Function Type State Note MOS 1 8V INPUT MOS 1 8V INPUT MOS 1 8V INPUT MOS 1 8V INPUT MOS 1 8V INPUT MOS 1 8V INPUT MOS 1 8V INPUT MOS 1 8V INPUT MOS 1 8V INPUT MOS 1 8V INPUT Alternate function C8 GPIO 01 I O Configurable GPIO STAT LED C9 GPIO 02 IPO Configurable GPIO C10 GPIO 03 lO Configurable GPIO C11 GPIO 04 IO Configurable GPIO Bl4 GPIO 05 I O Configurable GPIO C12 GPIO 06 I O Configurable GPIO C13 GPIO 07 YO Configurable GPIO K15 GPIO 08 I O Configurable GPIO L15 GPIO 09 UO Configurable GPIO G15 GPIO 10 I O Configurable GPIO OembiiIbumiaomubimeoc Page 50 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 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 EU V2 AUTO interface circuits Absolute Max
16. 1 11 15 Conformity Assessment Issues Probl mes d valuation de conformit It will be updated at ee a f gt D Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 67 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 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 e Where it can interfere with other electronic devices in environments such as hospitals airports aircrafts etc e Where there is risk of explosion such as gasoline stations oil refineries etc It is the responsibility of the user to enforce the country s regulations and the specific environmental regulation Do not disassemble the product any evidence of tampering will compromise the warranty validity Follow 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 conform to the security and fire prevention regulations The product has to be handled with care avoiding any contact with the pads because electrostatic discharges may damage the product itself The system integrator is responsible for the functioning of the final product therefore care has to be taken with the exte
17. 10 IO GPIO 10 CMOS 1 8V ADC Section B1 ADC INI AI Analog to Digital converter input A D RF Section kl Antenna I O GSM WCDMA Antenna 500hm RF Miscellaneous Functions R13 HW SHUTDOWN I Hardware Unconditional Shutdown Pull up to VBATT R12 ON OFF I Input Command for Power ON CMOS 1 8V C14 VRTC I RTC Power Power R11 VAUX PWRMON o Supply Output for external accessories Power L8V ON Monitor Power Supply MI VBATT Main Power Supply Baseband Power M2 VBATT Main Power Supply Baseband Power N1 VBATT PA Main Power Supply Radio PA Power N2 VBATT PA Main Power Supply Radio PA Power P1 VBATT PA Main Power Supply Radio PA Power P2 VBATT PA Main Power Supply Radio PA Power E1 GND Ground G1 GND Ground HI GND Ground J1 GND Ground L1 GND Ground A2 GND Ground E2 GND Ground F2 GND Ground G2 GND Ground H2 GND Ground J2 GND Ground K2 GND Ground L2 GND Ground R2 GND Ground M3 GND Ground N3 GND Ground P3 GND Ground R3 GND Ground D4 GND Ground M4 GND Ground N4 GND Ground P4 GND Ground R4 GND Ground N5 GND Ground P5 GND Ground R5 GND Ground N6 GND Ground P6 GND Ground Reproduction forbidden without written authorizatio n from Telit Communications S p A All Rights Reserved Page 15 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11
18. ARNING The three battery cells Ni Cd or Ni MH 3 6V nom battery types or 4V PB types MUST NOT be used directly because their maximum voltage can rise over the absolute maximum voltage for the UE910 EU V2 AUTO and cause damage USE only Li lon battery types e A bypass low usually a 100uF tantalum ESR capacitor with adequate capacity must be provided in order to cut the current absorption peaks e Make sure the low ESR capacitor usually a tantalum is rated at least 10V e A protection diode must be inserted close to the power input in order to protect the UE910 EU V2 AUTO module from power polarity inversions when connecting the battery e The battery capacity must be at least 500mAh in order to withstand the current peaks of 2A The suggested battery capacity is from 500mAh to 1000mAh e ERE PTE e E H E ifi J S e uM d ei E gt Ke E a Jam NE Le d i 1 p 4 ms 1 T a hi d WM SA 2 WH ES Ets TERME D Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 31 of 69 5 3 5 5 3 6 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 Thermal Design Guidelines The thermal design for the power supply heat sink must be done with the following specifications Average current consumption during GSM WCDMA APWR level max 700mA NOTE The average consumption during transmissions depends on the powe
19. C must be wide enough to ensure no voltage drops occur when the 2A current peaks are absorbed While a voltage drop of hundreds of 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 the application does not have an audio interface but only uses the data feature of the Telit UE910 EU V2 AUTO then this noise is not as disruptive and the power supply layout design can be more forgiving The PCB traces to UE910 EU V2 AUTO 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 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 usually 100 500 kHz The use of a good common ground plane is suggested The placement of the power supply on the board must be done in a way to guarantee that the high current return paths in the ground plane are not overlapped with any noise sensitive circuitry such as the microphone amplifier buffer or earphone amplifier The power supply input cables must be kept separate from noise sensitive lines such as mi
20. LE 4 1 eces mus be without craches ond flashes missing dimen NOTE I PEZZI DEVONO RISULTARE PRIVI DI CRICCHE E BAVE The p PER QUOTE MANCANTI FARE RIF AL MODELLO 30 Fer mis deese see 1 ANGOLO DI SFORMO ere no 9 Sp 3 ii eg zd ID eur eg er Gregori 42 11 e 15 otk mH A Se FOE visser ra Tray for HE 910 Module Cond Diss bid TOLLERANZA GENERALE 0 1 eneral tolerance 000 ouote DI CONTROLLO DETAIL 2 SCALE 3 1 section B B SCALE 4 1 SCALE 5 1 section C C lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 13 1 Moisture Sensibility The UE910 EU V2 AUTO is a Moisture Sensitive Device level 3 in accordance with standard IPC JEDEC J STD 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 lt 40 C and 90 relative humidity RH b Environmental condition during the production 30 C 60 RH according to IPC JEDEC J STD 033A paragraph 5 c The maximum time between the opening of the sealed bag and the reflow process must be 168hours if condition b IPC JEDEC J STD 033A paragraph 5 2
21. S leli wireless solutions UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Re 20 T We A en 11 11 d d Making machines talk wireless solutions UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 APPLICABILITY TABLE hr Pa SS PG gt d i Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 2 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 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 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 refere
22. TO A tantalum 100uF capacitor is usually suited e Make sure the low ESR capacitor on the power supply output usually a tantalum one is rated at least 10V e A protection diode must be inserted close to the power input in order to save the UE910 EU V2 AUTO from power polarity inversion 5 j P q 5 1 A a 7 1 D e E E T Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 29 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 An example of a linear regulator with 5V input LINEAR REGULATOR ui LT152 3 8 OUT 5 3 3 12V Input Source Power Supply Design Guidelines d d FL y 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 EU V2 AUTO When using a switching regulator a 500 kHz 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 g
23. UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 55 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 12 Mounting UE910 EU V2 AUTO on the Application 12 1 General The UE910 EU V2 AUTO has been designed in order to be compliant with a standard lead free SMT process 12 2 Module Finishing amp Dimensions The UE910 EU V2 AUTO overall dimensions are e Length 28 2mm e Width 28 2 mm e Thickness 2 2 mm e Weight 4 1g gooo0o0o00 033 nazgcd o0 nona da pDpaozocdcd 0000000000000009 pDpaaaaaoamgaaaoabadld D 0000OOOGOOOOOOO O0OO0O0OOGOGEOOOGOOOGOG 0Oo0ODO0D Bottom view Dimensions in mm IR Fryd E i bs gt t1 p 1771 NS Ve weie p p Fi 4 d d VE n nidal A Y eit p F p P 4 1 4 A n y z Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 56 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 28 240 0 C GO OFC I DETAIL A T Beroder forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 57 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 12 3 Recommended foot print for the application Inhibi
24. all the audio paths producing an audible annoying noise at 216 Hz if the voltage drops during the peak current absorption is too much The device may even shut down as a consequence of the supply voltage drop Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 28 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 5 9 General Design Rules The principal guidelines for the Power Supply Design embrace three different design steps e the electrical design e the thermal design e the PCB layout 5 3 1 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 e 5Vinput typically PC internal regulator output e 12V input typically automotive e Battery 5 3 2 5V Input Source Power Supply Design Guidelines e The desired output for the power supply is 3 8V hence there is not a big difference between the input source and the desired output so a linear regulator can be used A switching power supply will not be suitable because of the low drop out requirements e When using a linear regulator a proper heat sink must be provided in order to dissipate the power generated e A Bypass low ESR capacitor of adequate capacity must be provided in order to cut the current absorption peaks close to the UE910 EU V2 AU
25. audio output of the UE910 EU V2 AUTO 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 320hm 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 Have the loudspeaker as close as you can to the listener this simplify also the echo cancelling choose the loudspeaker with the higher sensitivity dBspl per W choose loudspeakers with the impedance close to the limit in order to feed more power inside the transducer it increases the W Vrms ratio If this were not enough an external amplifier should be used wireless solutions UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 9 2 Digital Voice Interface DVI The product is providing one Digital Audio Interface DVI on the following Pins m DVI WA Digital Voice interface WA0 B6 DVI RX I Digital Voice interface RX 1 8V La DVI TX O Digital Voice interface TX LM DVI CLK I O Digital Voice interface CLK 9 2 1 CODEC Example Please refer to the Digital Voice Interface Application note Reproduction forbidden without written authorization from Telit Communications S p A AlL Rights Reserved Page 49 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 1
26. cal lt 10uA Standby mode No call in progress AT CFUN 1 22 Normal mode full functionality of the module AT CFUN 4 20 Disabled TX and RX modules is not registered on the network Power saving CFUN 0 module registered on the network and can receive voice call or an SMS but it is AT CFUN 0 not possible to send AT commands module wakes up or 48 12 with an unsolicited code call or SMS or rising RTS AT CFUN 5 OLD line CFUN 5 full functionality with power saving Module registered on the network can receive incoming call sand SMS Tx and Rx mode A call in progress Max Power Mode 7 00 WCDMA HSDPA voice data call 700 EU GPRS Class12 Me ove 440 NA GPRS Class10 420 EU EGPRS Class12 Pete 270 NA EGPRS Class10 Worst best case depends on network configuration and is not under module control TIP The electrical design for the power supply should be made ensuring it will be capable of a peak current output of at least 2A In GSM GPRS mode RF transmission is not continuous and it is packed into bursts at a base frequency of about 216 Hz and the relative current peaks can be as high as about 2A Therefore the power supply has to be designed in order 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 this will reflect on
27. cope The aim of this document is the description of typical hardware solutions useful for developing a product with the Telit UE910 EU V2 AUTO module Audience This document is intended for Telit customers who are about to implement their applications using our UE910 EU V2 AUTO modules Contact Information Support 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 to 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 Please keep us informed of comments and suggestions for improvements Telit appreciates feedback from the users of our information Page 8 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 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 P
28. crophone earphone cables Page 33 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 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 GSM WCDMA Antenna Requirements The antenna for a Telit UE910 EU V2 AUTO device must fulfill the following requirements GSM WCDMA Antenna Requirements Frequency Depending on the frequency band s provided by the network operator the range customer must use the most suitable antenna for that those band s EGSM900 80 MHz GSM1800 DCS 170 MHz WCDMA FDD 1 2100 250 MHz WCDMA FDD VIII 900 80 MHz Gain Gain 2dBi Impedance 50 Ohm gt 33dBm 2 W peak power in GSM gt 23 5dBm Average power in WCDMA VSWR lt 5 1 limit to avoid permanent damage absolute max VSWR lt 2 1 limit to fulfill all regulatory requirements recommended Bandwidth Input power When using the Telit UE910 EU V2 AUTO since there s no antenna connector on the module the antenna must be connected to the UE910 EU V2 AUTO antenna pad K1 by means of a transmission line implemented in the PCB In the case that the antenna is not directly connected at the antenna pad of the UE910 EU V2 AUTO then a PCB line is required This transmission line shall fulfill the fo
29. e 9 5 Text Conventions T Tm 10 EE Re EE 10 2 General Proguct Desi hur 11 21 ee 11 22 Prod ct EEN 12 Zu EE 13 3 UE910 EU V7 AUTO Module Connecions a a nvesqer smunnekcnednt eee 14 GE PIN OUt Dr E 14 3 1 LGA E EE e 19 4 Hardware ten nt YPF EE rx MR Yir pur Ra ovra d n Ka Werl p Eye 20 4 1 Turning on the UE910 EU V2 AUTO modute nnn 20 4 1 1 Initialization and Activation State eene enne eren en nennen nnne nne nnn 20 4 2 Turning off the UE910 EU V2 AUTO Module Luuumuneuunamsumllirtkumermem jens et 22 4 2 1 Turning OFF by AT Commande 23 4 2 2 Turning OFF by tying low ON OFF sssssssssssssseeeeeeeeneneenern eene nennen nennen nn nnne nne nnns 23 4 3 Summary of Turning ON and OFF the Module iiiter binae beta reae nno tenu ru Ep da nua d duas 24 4 4 Hardware Unconditional Shutdown uuumaamueeumiarmenomessv v iv idt 24 PO NPR 27 5 1 Power Supply Feeds elleve oe ERR RYE Ra dt TUNES 27 5 2 Power Supply Ree Eee NG Gioberti 28 5 3 General Design RULES aus EES 29 5 3 1 Electrical Design Guidelines seesand i a AE EAEEREN 29 5 3 2 DV Input Source Power Supply Design Guidelines ssssssssseeeeeeee 29 a F Ee s Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 5 3 3 12V Input Source Power Supply Design Guidelines s ssssnnssssrnnserrrrese
30. e following tables Absolute Maximum Ratings Not Functional Parameter Min Max Input level on non power pin with respect to ground 0 3 2 3V Operating Range Interface levels 1 8V CMOS Parameter Min Max Input high level 1 5V 2 1V Input low level 0V 0 35V Output high level 1 35V 1 8V Output low level OV 0 45V a 5 hi a f DUE j P a Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 38 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 8 1 Modem Serial Port 1 The serial port 1 on the UE910 EU V2 AUTO 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 UE910 pose Signal v2 Function Usage Pad No Output from the UE910 EU V2 1 C109 DCD N14 Data Carrier Detect AUTO that indicates the carrier presence Output transmit line of the UE910 EU V2 AUTO UART Input receive of the UE910 EU V2 AUTO UART Input to the UE910 EU V2 4 C108 DTR M14 Data Terminal Ready AUTO that controls the DTE READY condition 5 GND GND Output from the UE910 EU V2 6 C107 DSR P14 Data Set Ready AUTO that indicates the module is ready Output from the UE910 EU V2 7 C106 CTS P15 Request to Send AUTO that controls the hardware flow control Input to the UE910 EU V2 8 CIOS RTS L14 Clear to Send AUTO that controls the hardware flow control Output from the UE910 EU V2
31. e is 50ohm e Keep line on the PCB as short as possible since the antenna line loss shall be less than around 0 3dB e Line geometry should have uniform characteristics constant cross section avoid meanders and abrupt curves e Any kind of suitable geometry structure can be used for implementing the printed transmission line afferent the antenna e f a Ground plane is required in line geometry that plane has to be continuous and sufficiently extended so the geometry can be as similar as possible to the related canonical model e Keep if possible at least one layer of the PCB used only for the Ground plane If possible use this layer as reference Ground plane for the transmission line e It is wise to surround on both sides the PCB transmission line with Ground Avoid having other signal tracks facing directly the antenna line track e Avoid crossing any un shielded transmission line footprint with other tracks on different layers e The Ground surrounding the antenna line on PCB has to be strictly connected to the main Ground plane by means of via holes once per 2mm at least placed close to the ground edges facing line track e Place EM noisy devices as far as possible from UE910 EU V2 AUTO antenna line e Keep the antenna line far away from the UE910 EU V2 AUTO power supply lines e If EM noisy devices are present on the PCB hosting the UE910 EU V2 AUTO such as fast switching ICs take care of shielding them with a metal frame cover
32. enerate EMC interferences For car PB battery the input voltage can rise up to 15 8V and this must 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 100uF tantalum capacitor is usually suited for this Make sure the low ESR capacitor on the power supply output usually a tantalum one is rated at least 10V DESEN Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 30 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 e For car applications a spike protection diode must be inserted close to the power input in order to clean the supply from spikes e A protection diode must be inserted close to the power input in order to save the UE910 EU V2 AUTO 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 schematic below SWITCHING REGULATOR 12V INPLIT PR ti 3 8 OUT DZD1 ci 16KA 39nF 10k 1000 F 1 F R2 47K 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 EU V2 AUTO module A W
33. erature 200 C 60 180 seconds 3 C second max PIE 60 150 seconds Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 61 of 69 wireless solutions UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 245 0 5 C 10 30 seconds 6 C sec max 8 minutes max NOTE All temperatures refer to topside of the package measured on the package body surface A WARNING The UE910 EU V2 AUTO module withstands one reflow process only Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 62 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 13 Packing System The UE910 EU V2 AUTO modules are packaged on trays of 20 pieces each These trays can be used in SMT processes for pick amp place handling TMax 65 C HE910 modules x20 B T c e ED EN 09 9 ABC E SC x S Sp ft Tray x6 po oe gt gt a gt gt Shielding amp ESD envelope x2 UPPER SIDE d 77 Silica gel bag x2 Cardboard box A WARNING These trays can withstand at the maximum temperature of 65 C Page 63 of 69 wireless solutions UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 En section D D SECTION F F SCALE 4 1 SCA
34. etail WARNING Consider a mechanical design and a low capacitance ESD protection device to protect UE910 EU V2 AUTO or customer specific requirements from ESD event to UART port M15 N15 P15 and L14 Page 40 of 69 wireless solutions UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 8 2 Modem Serial Port 2 The secondary serial port on the UE910 EU V2 AUTO is not supported PAD Sigal LO Function Type DIS Reserved Reserved E15 Reserved Reserved Lo ASS a Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 41 of 69 8 3 mee as lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 RS232 Level Translation In order to interface the Telit UE910 EU V2 AUTO with a PC com port or a RS232 EIA TIA 232 application a level translator is required This level translator must e Invert the electrical signal in both directions e Change the level from 0 1 8V to 15V Actually the RS232 UART 16450 16550 16650 amp 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 OV 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 l
35. evel translator There is 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 e 5drivers e 3 receivers An example of RS232 level adaption circuitry could be accomplished using a MAXIM transceiver MAX218 In this case the chipset is capable of translating directly from 1 8V to the RS232 levels Example on 4 signals only ENABLE The RS232 serial port lines are usually connected to a DB9 connector with the following layout IG 9 e f WA e D SA W n Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 42 of 69 wireless solutions UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 DCD RSe3e DSR RS232 RX A5232 ATS BS232 lt T Tx RS232 CTS_AS292 OTR AS232 RI RS232 GNO Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 43 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 9 Audio Section Overview The UE910 EU V2 AUTO provides an analog audio interface and
36. ications ITEM FEATUREs Air e Dual Bands WCDMA HSDPA 900 2100MHz Interface Dual Bands EGSM 900 DCS1800MHz e HSDPA Uplink up to 384kbps Downlink up to 3 6Mbps cat 6 Data WCDMA Uplink Downlink up to 384kbps Service e EDGE Uplink Downlink up to 236 8kbps e GPRS Uplink Downlink up to 85 6kbps e CSD 9 6kbps e GSM GPRS Class4 33dBm 900MHz NE Class1 30dBm 21800MHz RF output OCDE ClassE2 27dBm 2900MHz EE ClassE2 26dBm a1800MHz e WCDMA Class3 23 5dBm 2900 2100MHZ Typical GSM 900 108 0dBm FEE DCS1800 107 0dBm Ono WCDMA900 108 0dBm WCDMA2100 108 0dBm pus AR 28 2mm L x 28 2mm W x 2 2mm T Weight e 4lg Storage and Operating 40 85 C Temperatur Range Normal operating 34 42V voltage j range IO voltage 1 8V 144 Land Grid Array interface 10 general I O ports maximum including multi functional I Os State LED output Interface 1 A D converter Full RS232 CMOS UART baud rate up to 4Mbps USB High speed 2 0 baud rate up to 480Mbps Antenna 900 1800 2100MHz Analog audio interface 1 EAR MIC nudo Digital Voice Interface l Message e SMS MO MT Approvals R amp TTE GCF Ja E d a Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 12 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 2 3 RoHS Compliance As a part of Telit s corporate policy of environmental protection
37. ice 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 discussed wrong solutions must be considered as mandatory While the suggested hardware configurations must not be considered mandatory the information given must be used as a guide and a starting point for properly developing a product with the Telit UE910 EU V2 AUTO module NOTE The integration of the GSM GPRS EGPRS WCDMA HSDPA UE910 EU V2 AUTO module within a user application must be done according to the design rules described in this manual The information presented in this document is believed to be accurate and reliable However no responsibility is assumed by Telit Communication S p A for its use such as any infringement of patents or other rights of third parties No license is granted by implication or otherwise under any patent rights of Telit Communication S p A other than for circuitry embodied in Telit products This document is subject to change without notice iG j 9 p 4 WA y p e a S B WE ke Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 11 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 2 2 Product Specif
38. imum Ratings Not Functional Parameter Min Max Input level on any digital pin CMOS 1 8 with respect to ground 0 3V 2 3V Operating Range Interface levels 1 8V CMOS Parameter Min Max Input high level 1 5V 2 1V Input low level 0 0V 0 35V Output high level 1 35V 1 8V Output low level 0 0V 0 45V Current characteristics Parameter Typical Output Current 2mA Input Current 30uA 10 2 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 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 Cupul sistor 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 module when it is powered OFF or during an ON OFF transition lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 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 sho
39. ion provides some safety recommendations that must be followed by the customer in the design of the application that makes use of the Telit UE910 EU V2 AUTO Chapter 17 Document History provides document revision history of the Telit UE910 EU V2 AUTO Vig Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 9 of 69 1 5 1 6 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 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 f 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 Related Documents e UE910 V2 Software User Guide 1VV0301066 e UE910 V2 AT Commands Reference Guide 80419ST10124A e Telit EVK2 User Guide 1vv0300704 Page 10 of 69 mu as lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 General Product Description Overview The aim of this document is the description of typical hardware solutions useful for developing a product with the Telit UE910 EU V2 AUTO module In this document all the basic functions of a mobile dev
40. is illustrated below ON OFF ov Power ON impulse 4 1 1 Initialization and Activation State Upon turning on UE910 EU V2 AUTO module the UE910 EU V2 AUTO module is not active yet because the boot sequence of UE910 EU V2 AUTO is still executing internally It takes about 10 seconds to complete the initialization of the module internally For this reason it would be useless to try to access UE910 EU V2 AUTO during the Initialization state as below The UE910 EU V2 AUTO module needs at least 10 seconds after the PWRMON goes High to become operational by reaching the activation state lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 VBATTERY 1 sec HOLD TIME 2 sec ON OFF PWRMON monitoring PWRMON status e 10 sec gt During the nitialization state any kind of AT command is not available DTE must wait for the Activation state to communicate with UE910 EU V2 AUTO To check if the UE910 EU V2 AUTO 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 250kQ internally Using a pull up resistor may bring latch up problems on the UE910 EU V2 AUTO power regulator and improper power on off of the module The line ON OFF must be connected only in open collector configuration NOTE In this document all the lines a
41. llowing requirements Antenna Line on PCB Requirements Characteristic Impedance 500hm Max Attenuation 0 3dB Coupling with other signals shall be avoided 1 Pra iE ch gt k ad RSC P Y SE o A Ve w n i d ur 3 IF 4 gt e t 4 F E J 5 P E l Be eco d gu Jj me Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 34 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 Cold End Ground Plane of antenna shall be equipotential to the UE910 EU V2 AUTO ground pads 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 End Users must be provided with transmitter operation conditions for satisfying RF exposure compliance OEM integrators must ensure that the end user has no manual instructions to remove or install the UE910 EU V2 AUTO module Antennas used for this OEM module must not exceed 2dBi gain for mobile and fixed operating configurations 6 2 GSM WCDMA antenna PCB line Guidelines e Make sure that the transmission line s characteristic impedanc
42. m Solder resist openings 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 as the pad itself see following figure Page 59 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 Inhibit area for micro via jo NE OE ADI Holes in pad are allowed only for blind holes and not for through holes Recommendations for PCB Pad Surfaces Finish Layer thickness um Properties good solder ability protection Electro less Ni Immersion Au 3 7 0 05 0 15 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 tin lead solder paste on the described surface plating is better compared to lead free solder paste Denn d PLE L Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 60 of 69 wireless solutions UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 12 7 Solder Paste Solder Paste 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 Solder Reflow The following is the recommended solder reflow profile Limit Up Limit Down Recommended Temp
43. mission special attention must be paid to how to dissipate the heat generated The current consumption will be up to about 700mA in GSM WCDMA continuously at the maximum TX output power Thus you must arrange the area on the application PCB must be as large as possible under UE910 EU V2 AUTO The UE910 EU V2 AUTO must be mounted on the large ground area of the application board and make many ground vias to dissipate the heat Power Supply PCB layout Guidelines As seen in the electrical design guidelines the power supply must 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 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 the correct operation of the circuitry A misplaced component can be useless or can even decrease the power supply performance The bypass low ESR capacitor must be placed close to the Telit UE910 EU V2 AUTO power input pads or if the power supply is a switching type the capacitor can be placed close to the inductor to cut the ripple if the PCB trace from the capacitor to UE910 EU V2 AUTO is wide enough to ensure a drop less 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 I
44. nces 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 s
45. ophone connection 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 Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 46 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 9 1 2 LIN IN Connection TBD gt E ADC INPUT 33pF 33pF LINE IN 1 ND Remote GND TELIT MODULE pe J 1 d b 100 LINE IN LINE IN TELIT MODULE o I I 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 Place the 33pF 100Ohm 33pF RF filter in order to prevent some EMI field to get into the high impedance high gain MIC inputs Since the input is differential the common mode voltage noise between the two different grounds is rejected provided that both AF IN amp AF IN are connected directly onto the source 4 E i 9 A d 4 7 UY E A i y p e a Ki A f E m T Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 47 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 9 1 3 EAR Connection DAC OUTPUT The
46. r level at which the device is requested to transmit via the network The average current consumption hence varies significantly 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 If we assume that the device stays in transmission for short periods of time a few minutes and then remains for quite a long time in idle one hour then the power supply always has time to cool down between the calls and the heat sink could be smaller than the calculated for 700mA maximum RMS current There could even be a simple chip package no heat sink Moreover in 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 700mA usually around 200 mA 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 The heat generated by the UE910 EU V2 AUTO must be taken into consideration during transmission at 23 5dBm max during calls This generated heat will be mostly conducted to the ground plane under the UE910 EU V2 AUTO The application must be able to dissipate heat In the GSM WCDMA mode since UE910 EU V2 AUTO emits RF signals continuously during trans
47. re inverted Active low signals are labeled with a name that ends with or with a bar over the name 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 EU V2 AUTO module when the module is powered OFF or during an ON OFF transition For example 1 To drive the ON OFF pad with a totem pole output of a 3 5 V microcontroller uP OUT1 MND ai Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 21 0f 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 ETF E R1 10K Q1 uP OUT BC847BW 5 SOT 323 0402 3 5V Ov p 1 sec GND Power ON OFF impulse 2 To drive the ON_OFF pad directly with an ON OFF button cT Km E m OFF Power ON OFF Um ar impulse 1s 4 2 Turning off the UE910 EU V2 AUTO module Turning off the device can be done in two ways e via AT command see UE910 V2 Software User Guide ATHSHDN e 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 EU V2 AUTO the pad ON OFF must be tied low for at least 2 seconds and then released TIP To check if the device has powered off hardware line PWRMON must be monitored The device is powered off when PWRMON goes low
48. rnal components of the module as well as of any project or installation issue because of the risk of disturbing the GSM WCDMA network or external devices or having impact on 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 SAR regulations y d d LH ab j p a EX ke 7 BUT Ze oe Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 68 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 17 Document History Revision Date Changes 0 2013 08 22 Preliminary release 1 2013 10 16 Changed Audio block diagram Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 69 of 69
49. roduct Description gives an overview of the features of the product Chapter 3 UE910 EU V2 AUTO Module Connections deals with the pin out configuration and layout Chapter 4 Hardware Commands How to operate the module via hardware Chapter 5 Power supply Power supply requirements and general design rules Chapter 6 Antenna The antenna connection and board layout design are the most important parts in the full product design Chapter 7 USB Port The USB port on the Telit UE910 EU V2 AUTO is the core of the interface between the module and OEM hardware Chapter 8 Serial ports Refers to the serial ports of the Telit UE910 EU V2 AUTO Chapter 9 Audio Section overview Refers to the audio blocks of the Base Band Chip of the UE910 EU V2 AUTO Telit Module Chapter 10 General Purpose 1 0 How the general purpose I O pads can be configured Chapter 11 ADC section Deals with this one kind of converter Chapter 12 Mounting UE910 EU V2 AUTO on the Application Mechanical dimensions and recommendations on how to mount the module on the user s board Chapter 13 Packing System Deals with packing system Chapter 14 Application Design Guide Deals with the design of host system for download or upgrade Chapter 15 Conformity Assessment Issues provides some fundamental hints about the conformity assessment that the final application might need Chapter 16 Safety Recommendat
50. rtrttstttrerettrnrrrtrnnrrerrenere 30 5 3 4 Battery Source Power Supply Design Gudelmnes rene 31 5 3 5 Thermal Design GuidelineS eene nennen rennen nennen nennen nenne 32 5 3 60 Power Supply PCB layout Gutdelmes eene nennen nnne nnne 32 Be AMENNA NER o oo mE 34 6 1 GSM WCDMA Antenna Regutrements 34 6 2 GSM WCDMA antenna PCB line Guidelines r merrrrrororsvrrrnvrrrsvrrrnvrrravrrevvrrsnvrnsvvrrnvrnrsvrenn 35 6 3 GSM WCDMAAntenna installation Gudelmes 35 De USB Por dere cr 37 8 Serial PR 38 8 1 Modem Serial Port sistas excu ia Fa Fern RR EUER AE NERA KEREEREEREEN UAYTAX RE UREERRER FEXYRRR REA BERN Enner EErEE 39 8 2 Modem Serial Port 2 scvinteratacnvesaaientartaisatedaciuagerdindnvainares FAMEM igo tudVendeeathiadadaabeniental teieindsentdeanss 41 8 3 FR Level Translation EE 42 9 Audio Section Overview E M 44 9 1 Analog Audio nee 44 9151 MIC eet tee EE 45 9 1 2 LIN IN Connection BD nutzt er icai eben ded ups nto quadrans OE 47 9 1 3 EAR CONNECTION EE 48 9 2 Digital Voice Interface OV i uci es desedsec etu oae dE gege nt redeo rib darn at 49 9 1 CODEC Example uccide cidit I e p tento atl iced pes Ea coi tto d cor bene fts 49 10 General Purpose e 50 10 1 Logic Level Specifcation 51 10 2 Using a GPIO Pad as INPUtsicsccccccsccsaiecssaseascasedasaisorcescaecaisdesesonsetiaconeasaseuseasessecedndeansiassees 51 10 3 Using a GPIO Pad s Output 5
51. signal Data I O 1 8 3V A6 SIMCLK O External SIM signal Clock 1 8 3V A7 SIMRST O External SIM signal Reset 1 8 3V Digital Voice interface B9 DVI WA I O Digital Voice Inteface CMOS 1 8V B6 DVI RX I O Digital Voice Inteface CMOS 1 8V B7 DVI TX I O Digital Voice Inteface CMOS 1 8V B8 DVI CLK I O Digital Voice Inteface CMOS 1 8V Analog Voice Interface B2 EAR AO Earphone signal output phase B3 EAR AO Earphone signal output phase B4 MIC AI Microphone input phase B5 MIC AI Microphone input phase Digital IO C8 GPIO 01 I O GPIO 01 STAT LED CMOS 1 8V C9 GPIO 02 I O GPIO 02 CMOS 1 8V C10 GPIO 03 I O GPIO 03 CMOS 1 8V C11 GPIO 04 I O GPIO 04 CMOS 1 8V B14 GPIO 05 I O GPIO 05 CMOS 1 8V C12 GPIO 06 I O GPIO 06 CMOS 1 8V C13 GPIO 07 I O GPIO 07 CMOS 1 8V K15 GPIO 08 I O GPIO 08 CMOS 1 8V L15 GPIO 09 I O GPIO 09 CMOS 1 8V uu T ANN d am N P s d T xi oy TT ONE X pei TUA rj di 7 J Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved EE Page 14 of 69 Le O Telit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 Pin Signal I O Function Type G15 GPIO
52. t Components 2B 40 Na 1 90 gli UEM SI A D EF CH J MN PR Hy o di a D aa o 2 gaummouulgtu oo 3 E dH bp em Le El z 4 oO OG T 5 oo 6 nn e 7 oo T I TRECE Oo z g 3 Inhibit Wiring Bia Oo E E nDoood HutudumussuHumuiummmg tk EL Bp Eee DEI EL Eve eo HE EE EG 144 pins lt Top View gt In order to easily rework the UE910 EU V2 AUTO 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 NOTE In the customer application the region under WIRING INHIBIT see figure must be clear from signal or ground paths 4 4 A d x s a Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 58 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 12 4 Stencil Stencil s apertures layout can be the same as the recommended footprint 1 1 A suggested thickness of stencil foil z 120 um 12 5 PCB Pad Design Non solder mask defined NSMD type is recommended for the solder pads on the PCB Solder Mask Defined Non Solder Mask Defined 12 6 Recommendations for PCB Pad Dimensions mm The recommendation for the PCB pads dimensions are described in the following imageldimensions in m
53. tate of the UE910 EU V2 AUTO so it cannot be fixed definitely Normally it will be 10 seconds after releasing ON OFF and DTE should monitor the status of PWRMON to see the actual power off e Et ud Eur B Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 23 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 VBATTERY 2 sec HOLD TIME 3 sec ON OFF PWRMON monitoring PWRMON status H H H H 4 3 Summary of Turning ON and OFF the Module The chart below describes the overall sequences for turning ON and OFF the module VBATTERY 4 4 Hardware Unconditional Shutdown The Unconditional shutdown of the module could be activated using the HW SHUTDOWN line pad R13 a gt 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 a Sus gu Faprod etn forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 24 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 To unconditionally shutdown the UE910 EU V2 AUTO the pad HW SHUTDOWN must be tied low for at least 0 8 seconds and then released NOTE Do not use any pull up resistor on the HW SHUTDOWN line nor any to
54. tem pole digital output It is pulled up internally to VBATT with 57kQ Using an external pull up resistor may bring latch up problems on the UE910 EU V2 AUTO power regulator and improper functioning of the module The line HW SHUTDOWNY must be connected only in open collector configuration The HW SHUTDOWN will generate an unconditional shutdown of the module without an automatic restart The module will shutdown but will NOT perform the detach from the cellular network To proper power on again the module please refer to 4 1 Turning ON the UE910 EU V2 AUTO TIP The unconditional hardware shutdown must always be implemented on the boards and the software must use it only as an emergency exit procedure A simple circuit to unconditionally shutdown the module is illustrated below HW SHUTDOWN Impulse 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 d IF ECH sa E em Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 25 of 69 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 HW SHUTDOWN R1 10K Q1 ur OE BC847BW 5 SOT 323 3 5V 0402 u 0 8 sec GND Impulse 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
55. upplied 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 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 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
56. ws information on the network service availability and Call status In the UE910 EU V2 AUTO modules the STAT LED usually needs an external transistor to drive an external LED Because of the above the status indicated in the following table is reversed with respect to the pin status LED status Device Status Permanently off Device off Fast blinking Period Is Ton 0 58 Net search Not registered turning off Slow blinking d Period 3s Ton 0 3s Registered full service Permanently on a call is active A schematic example could be DL101 NN LY M amp amp Q251 26 STAT LED Reproduction forbidden without written authorization from Telit Communications S p A All Rights Reserved Page 52 of 69 10 5 10 6 lelit UE910 EU V2 AUTO Hardware User Guide 1VV0301072 Rev 1 2013 11 11 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 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 C14 on module s Pinout For additional details on the Backup solutions please refer to the related application

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