Telit Wireless Solutions GE865 Hardware User's Manual
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Telit Wireless Solutions GE865 Hardware User's Manual

Telit Wireless Solutions GE865 Hardware User's Manual

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GE865 Hardware User Guide
1vv0300799 Rev.17 – 2017-05-11

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Summary of Contents for Telit Wireless Solutions GE865

  • Page 1 GE865 Hardware User Guide 1vv0300799 Rev.17 – 2017-05-11...
  • Page 2 GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 APPLICABILITY TABLE PRODUCT GE865-QUAD Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 2 of 75...
  • Page 3 GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE Notice While reasonable efforts have been made to assure the accuracy of this document, Telit assumes no liability resulting from any inaccuracies or omissions in this document, or from use of the information obtained herein.
  • Page 4 GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 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.

  • Page 5: Table Of Contents

    1.5..............................8 ONVENTIONS 1.6.............................. 9 ELATED OCUMENTS OVERVIEW ................................9 GE865 MECHANICAL DIMENSIONS .......................... 11 GE865 MODULE CONNECTIONS ..........................12 4.1. PIN-OUT ................................12 BGA Balls Layout ............................15 4.1.1. HARDWARE COMMANDS ............................16 5.1. GE865 ............................16 URNING 5.2.
  • Page 6 Low Pass Filter Example ..........................60 12.2. ADC C ..............................61 ONVERTER 12.2.1. Description ..............................61 12.2.2. Using ADC Converter ........................... 61 MOUNTING THE GE865 ON YOUR BOARD ......................62 13.1................................. 62 ENERAL 13.2. & ........................62 ODULE FINISHING DIMENSIONS 13.3.

  • Page 7: Introduction

    1.1. Scope The aim of this document is the description of some hardware solutions useful for developing a product with the Telit GE865 module. 1.2. Audience This document is intended for Telit customers, who are integrators, about to implement their applications using our GE865 modules.

  • Page 8: Text Conventions

    Chapter 8: “Logic Level specifications” Specific values adopted in the implementation of logic levels for this module. Chapter 9: “Serial ports” The serial port on the Telit GE865 is the core of the interface between the module and OEM hardware Chapter 10: “Audio Section overview”...

  • Page 9: Related Documents

    Telit EVK2 User Guide, 1vv0300704 Overview The aim of this document is the description of some hardware solutions useful for developing a product with the Telit GE865 module. Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 9 of 75...
  • Page 10 Telit GE865 module. For further hardware details that may not be explained in this document refer to the Telit GE865 Product Description document where all the hardware information is reported.

  • Page 11: Ge865 Mechanical Dimensions

    GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 GE865 Mechanical Dimensions The GE865-QUAD overall dimensions are: Length: 22 mm • Width: 22 mm • Thickness: 3.0 mm • Weight: 3,2 g • Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved...

  • Page 12: Ge865 Module Connections

    GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 GE865 module connections 4.1. PIN-OUT Ball Signal Function Note Type Audio EAR- Earphone signal output, phase - Audio EAR+ Earphone signal output, phase + Audio MIC+ Mic.signal input; phase+ Audio MIC- Mic.signal input; phase-...
  • Page 13 GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 Ball Signal Function Note Type GPIO01 Configurable GPIO / Digital Audio GPIO_01 / DVI_WA0 CMOS 2.8V Interface (WA0) GPIO_02 / JDR / GPIO02 I/O pin / Jammer Detect Report / Digital CMOS 2.8V...
  • Page 14 GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 NOTE: If not used, almost all pins should be left disconnected. The only exceptions are the following pins: signal F1,F2,F3 VBATT & VBATT_PA G1, C2, C7, E5, E7, G5, G4, G3, H3, H6...

  • Page 15: Bga Balls Layout

    GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 4.1.1. BGA Balls Layout TOP VIEW C105 / RTS ON_OFF RESET* TX_AUX RX_AUX VBATT SERVICE GPIO_02 / VBATT_P C106/CTS C107/DSR PWRMON GPIO_05 VRTC DVI_RX GPIO_01 / VBATT_P C103_TXD C108/DTR GPIO_10 DVI_WA0 GPIO_08 /...

  • Page 16: Hardware Commands

    Turning ON the GE865 To turn on the GE865 the pad ON# must be tied low for at least 1 second and then released. When the power supply voltage is lower than 3.4V the pad ON# must be tied low at least 5 seconds.
  • Page 17 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 GE865 when the module is powered off or during an ON/OFF transition. Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved...
  • Page 18 GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 A flow chart showing the AT command managing procedure is displayed below: Start AT CMD. DELAY= 300mSec Enter AT<CR> AT init sequence. AT answer in 1Sec ? Disconnect VBatt Modem ON Proc. For example: Reproduction forbidden without Telit Communications S.p.A.
  • Page 19 GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 1- Let's assume you need to drive the ON# pad with a totem pole output of a +3/5 V microcontroller (uP_OUT1): 2- Let's assume you need to drive the ON# pad directly with an ON/OFF button: Reproduction forbidden without Telit Communications S.p.A.

  • Page 20: Turning Off The Ge865

    To turn OFF the GE865 the pad ON# must be tied low for at least 2 seconds and then released. A Pulse duration less than 2 seconds should also start the power off procedure, but this is not guaranteed.
  • Page 21 GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 The following flow chart shows the proper turnoff procedure: Modem OFF Proc. PWMON = ON? ON_OFF = LOW Delay = 2 Sec ON_OFF = HIGH Modem ON Proc. PWMON = ON? Delay 15s...

  • Page 22: Resetting The Ge865

    SIM responses. To unconditionally reboot the GE865, the pad RESET# must be tied low for at least 200 milliseconds and then released.
  • Page 23 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 GE865 when the module is powered off or during an ON/OFF transition. Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved...
  • Page 24 GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 For example: 1. Let us assume you need to drive the RESET# pad with a totem pole output of a +3/5 V microcontroller (uP_OUT2): Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved...

  • Page 25: Power Supply

    GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 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 overall performances, hence read carefully the requirements and the guidelines that will follow for a proper design.

  • Page 26: Power Consumption

    GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 6.2. Power Consumption The GE865 power consumptions are: GE865 Average Mode Mode description (mA) SWITCHED OFF Module supplied but Switched Off Switched Off <62uA IDLE mode AT+CFUN=1 16,0 Normal mode: full functionality of the module...

  • Page 27: Power Consumption Plots

    GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 6.2.1. Power consumption Plots This document section is showing the typical Current consumption plots (using Agilent 66319D) in the normal working conditions of the module. GSM900 – Voice Call – Power level 5 GSM900 –...
  • Page 28 GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 GSM900 – GPRS Call – Power level 5 - 2 Slot TX, 3 Slot RX DCS1800 – Voice Call – Power level 0 Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved...
  • Page 29 GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 DCS1800 – GPRS Call – Power level 0 – 1 Slot TX PCS1900 – GPRS Call – Power level 0 - 2 Slot TX, 3 Slot RX Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved...
  • Page 30 GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 30 of 75...

  • Page 31: General Design Rules

    A Bypass low ESR capacitor of adequate capacity must be provided in order to cut the • current absorption peaks close to the GE865, a 100μF tantalum capacitor is usually suited. Make sure the low ESR capacitor on the power supply output (usually a tantalum one) is •...
  • Page 32 A protection diode should be inserted close to the power input, in order to save the • GE865 from power polarity inversion. This can be the same diode as for spike protection. An example of switching regulator with 12V input is in the below schematic: Reproduction forbidden without Telit Communications S.p.A.
  • Page 33 GE865 and damage it. NOTE: DON'T USE any Ni-Cd, Ni-MH, and Pb battery types directly connected with GE865. Their use can lead to overvoltage on the GE865 and damage it. USE ONLY Li-Ion battery types. A Bypass low ESR capacitor of adequate capacity must be provided in order to cut the •...

  • Page 34: Thermal Design Guidelines

    For the heat generated by the GE865, you can consider it to be during transmission 1W max during CSD/VOICE calls and 2W max during class10 GPRS upload.

  • Page 35: Power Supply Pcb Layout Guidelines

    PCB trace from the capacitor to the GE865 is wide enough to ensure a dropless connection even during the 2A current peaks.

  • Page 36: Antenna

    GE865 antenna pad (BGA Ball H5) by means of a transmission line implemented on the PCB. In the case the antenna is not directly connected at the antenna pad of the GE865, then a PCB line is needed in order to connect with it or with its connector.

  • Page 37: Gsm Antenna - Pcb Line Guidelines

    • Keep the antenna line far away from the GE865 power supply lines; If EM noisy devices are present on the PCB hosting the GE865, such as fast switching • ICs, take care of the shielding of the antenna line by burying it inside the layers of PCB and surround it with Ground planes, or shield it with a metal frame cover.

  • Page 38: Pcb Guidelines In Case Of Fcc Certification

    7.3. PCB Guidelines in case of FCC certification In the case FCC certification is required for an application using GE865, according to FCC KDB 996369 for modular approval requirements, the transmission line has to be similar to that implemented on GE865 interface board and described in the following chapter.

  • Page 39: 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 GE865 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 40 GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 Line input impedance (in Smith Chart format, once the line has been terminated to 50 Ω load) is shown in the following figure: Insertion Loss of G-CPW line plus SMA connector is shown below: Reproduction forbidden without Telit Communications S.p.A.

  • Page 41: Gsm Antenna - Installation Guidelines

    GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 7.4. GSM Antenna - Installation Guidelines Install the antenna in a place covered by the GSM signal. • • If the device antenna is located greater then 20cm from the human body and there are no...

  • Page 42: Logic Level Specifications

    1vv0300799 Rev.17– 2017-05-11 Logic level specifications Where not specifically stated, all the interface circuits work at 2.8V CMOS logic levels. The following table shows the logic level specifications used in the GE865 interface circuits: Absolute Maximum Ratings -Not Functional Parameter Input level on any digital pin -0.3V...

  • Page 43: Reset Signal

    RESET# Phone reset RESET# is used to reset the GE865 . Whenever this signal is pulled low, the GE865 is reset. When the device is reset it stops any operation. After the release of the reset GE865 is unconditionally shut down, without doing any detach operation from the network where it is registered.

  • Page 44: Serial Ports

    The only configuration that doesn't need a level translation is the 2.8V UART. The serial port on the GE865 is a +2.8V UART with all the 7 RS232 signals. It differs from the PC-RS232 in the signal polarity (RS232 is reversed) and levels. The levels for the GE865...

  • Page 45: Rs232 Level Translation

    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 GE865 when the module is powered off or during an ON/OFF transition. 9.2.
  • Page 46 Instead, it must be powered from a +2.7V / +2.9V (dedicated) power supply. This is because in this way the level translator IC outputs on the module side (i.e. GE865 inputs) will work at +3.8V interface levels, damaging the module inputs.
  • Page 47 GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 An example of level translation circuitry of this kind is: example done with a SIPEX SP3282EB RS232 Transceiver that could accept supply voltages lower than 3V DC. NOTE: In this case Vin has to be set with a value compatible with the logic levels of the module. (Max 2.9V DC).
  • Page 48 RS232 Transceiver (MAX3237EAI) adding some resistors to adapt the levels on the GE865 Input lines. NOTE: In this case has to be taken in account the length of the lines on the application to avoid problems in case of High-speed rates on RS232.

  • Page 49: Uart Behaviour

    GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 5V UART level translation If the OEM application uses a microcontroller with a serial port (UART) that works at a voltage different from 2.8 - 3V, then a circuitry has to be provided to adapt the different levels of the two set of signals.

  • Page 50: Audio Section Overview

    GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 Audio Section Overview The Base Band Chip of the GE865 provides one audio path both in Uplink and in (transmit) Downlink direction , as shown in the next figure . (receive) For more information refer to Telit document : “...

  • Page 51: Input Lines

    GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 TIP: Being the microphone circuitry the more noise sensitive, its design and layout must be done with particular care. Both microphone paths are balanced and the OEM circuitry must be balanced designed to reduce the common mode noise typically generated on the ground plane.

  • Page 52: General Purpose I/O

    GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 TIP : We suggest driving the load differentially , thus the output swing will double and the need for the big output coupling capacitor avoided. However if particular OEM application needs, also a Single Ended circuitry can be implemented but the output power will be reduced (S.E)

  • Page 53: Gpio Logic Levels

    . 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 GE865 firmware and acts depending on the function implemented. For Logic levels please refer to chapter 8.
  • Page 54 GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 Parameter Input level on any digital pin -0.3V +3.1V when on (CMOS 2.8) Input level on any digital pin -0.3V +2.1V when on (CMOS 1.8) Input voltage on analog pins -0.3V +3.0V when on Operating Range - Interface levels (2.8V CMOS)

  • Page 55: Using Agpio Pad As Input

    NOTE: In order to avoid a back powering effect it is recommended to avoid having any HIGH logic level signal applied to the digital pins of the GE865 when the module is powered off or during an ON/OFF transition. 11.3.

  • Page 56: Using The Rftxmon Output Gpio5

    11.6. Using the Alarm Output GPIO6 The GPIO6 pad, when configured as Alarm Output, is controlled by the GE865 module and will rise when the alarm starts and fall after the issue of a dedicated AT command. This output can be used to power up the GE865 controlling microcontroller or application at the...

  • Page 57: Indication Of Network Service Availability

    Indication of network service availability The STAT_LED pin status shows information on the network service availability and Call status. In the GE865 modules, the STAT_LED usually needs an external transistor to drive an external LED. Therefore, the status indicated in the following table is reversed with respect to the pin status.

  • Page 58: Rtc Bypass Out

    GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 11.9. RTC Bypass out 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.

  • Page 59: Dac And Adc Section

    The GE865 provides a Digital to Analog Converter. The signal (named DAC_OUT) is available on BGA Ball G7 of the GE865 and on pin 17 of PL102 on GE865 Interface Board (CS1324). The on board DAC is a 10 bit converter, able to generate a analogue value based a specific input in the range from 0 up to 1023.

  • Page 60: Enabling Dac

    GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 12.1.2. Enabling DAC An AT command is available to use the DAC function. The command is: AT#DAC= [<enable> [, <value>]] <value> - scale factor of the integrated output voltage (0..1023 - 10 bit precision) it must be present if <enable>=1...

  • Page 61: Adc Converter

    The GE865 module provides 2 Analog to Digital Converters. The input lines are: ADC_IN1 available on Ball F5 and Pin 19 of PL102 on GE865 Interface Board (CS1324). ADC_IN2 available on Ball F6 and Pin 20 of PL102 on GE865 Interface Board (CS1324).

  • Page 62: Mounting The Ge865 On Your Board

    GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 Mounting the GE865 on your Board 13.1. General The GE865 modules have been designed in order to be compliant with a standard lead-free SMT process. 13.2. Module finishing & dimensions Bottom View Pin A1...

  • Page 63: Recommended Foot Print For The Application

    13.3. Recommended foot print for the application order to easily rework the GE865 is suggested to consider on the application a 1.5mm Inhibit 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 64: Debug Of The Ge865 In Production

    Debug of the GE865 in production To test and debug the mounting of the GE865, we strongly recommend to foreseen test pads on the host PCB, in order to check the connection between the GE865 itself and the application and to test the performance of the module connecting it with an external computer.

  • Page 65: Pcb Pad Design

    GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 13.6. PCB pad design Non solder mask defined” (NSMD) type is recommended for the solder pads on the PCB. Recommendations for PCB pad dimensions Ball pitch [mm] Solder resist opening diameter A [mm]...

  • Page 66: Solder Paste

    GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 Holes in pad are allowed only for blind holes and not for through holes. Recommendations for PCB pad surfaces: Finish Layer thickness [µm] Properties Electro-less Ni / 3 –7 / good solder ability protection, Immersion Au 0.05 –...

  • Page 67: Ge865 Solder Reflow

    GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 13.7.1. GE865 Solder reflow The following is the recommended solder reflow profile Profile Feature Pb-Free Assembly Average ramp-up rate (T to T 3°C/second max Preheat – Temperature Min (Tsmin) 150°C – Temperature Max (Tsmax) 200°C...
  • Page 68 NOTE: All temperatures refer to topside of the package, measured on the package body surface WARNING: The GE865 module withstands one reflow process only. Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 68 of 75...

  • Page 69: Packing System

    14.1. Packing on tray The GE865 modules are packaged on trays of 50 pieces each. This is especially suitable for the GE865 according to SMT processes for pick & place movement requirements. See detail B for module positioning and tray orientation into the envelope.

  • Page 70: Tray Detail

    GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 14.1.1. Tray detail The size of the tray is: 329 x 176mm. Section A-A WARNING: These trays can withstand at the maximum temperature of 65° C. Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved...

  • Page 71: Packaging On Reel

    GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 14.2. Packaging on reel The GE865-QUAD can be packaged on reels of 200 pieces each. See figure for module positioning into the carrier. DIRECTION OF UNREELING NOT Rounded Corner 14.2.1. Carrier Tape detail Reproduction forbidden without Telit Communications S.p.A.

  • Page 72: Reel Detail

    GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 14.2.2. Reel detail Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 72 of 75...

  • Page 73: Packaging Detail

    GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 14.2.3. Packaging detail Silica-gel bag (x3) Shielding & ESD envelope Humidity indicator Multi Device & Packaging label Reel label TOTAL: 200 MODULES 14.3. Moisture sensibility The level of moisture sensibility 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.

  • Page 74: Safety Recommandations

    GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 SAFETY RECOMMANDATIONS READ CAREFULLY Be sure the use of this product is allowed in the country and in the environment required. The use of this product may be dangerous and has to be avoided in the following areas: Where it can interfere with other electronic devices in environments such as hospitals, •...

  • Page 75: Document History

    GE865 Hardware User Guide 1vv0300799 Rev.17– 2017-05-11 Document History ISSUE#0 2009-01-26 First ISSUE# 0 - DRAFT ISSUE#1 2009-02-15 Updated current consumptions table ISSUE#2 2009-02-15 Updated Pinout description Updated mechanical dimensions (balls spacing), ISSUE#3 2009-03-18 charger description removed, Added better explanation of pin H5 (RF) and H1 (service)

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