Microchip Technology LG9271 Low-Power Long Range Technology Gateway Module User Manual LoRaGateway DS

Microchip Technology Inc. Low-Power Long Range Technology Gateway Module LoRaGateway DS

User Manual

 2017 Microchip Technology Inc. Preliminary DS00000000A-page 1LG8271/LG9271General Features• Supports LoRa®/LoraWAN™ Technology RF Packets• Up to eight receive and one transmit channel(s)• UART (TTL) interface with built-in control protocol• Compact form factor 90.0 mm x 30.0 mm• mPCIe physical connector• Environmentally friendly RoHS compliant• Compliance:- LG8271: Certified to R&TTE RF Standards- LG9271: Certified to FCC Modular Transmit-ter Standards• Device Firmware Upgrade (DFU) over UART, see “LoRa® Technology Gateway Module Software Specifications” Operational• Single operating voltage: 3.0V to 3.6V (3.3V nominal)• Temperature range: -40 to +85 °C• Supports LoRa Technology (12.5 kbps) and FSK (EU only) (up to 300 kbps) modulations• Integrated frequency matched RF front end, RF transceiver, baseband processor, and MCUDescriptionMicrochip's LG8271/LG9271 Low-Power Long Range(LoRa) Technology transceiver modules provide aneasy to use, low-power solution for long range wirelessdata reception. Each module provides eight LoRaTechnology receive channels (125 kHz Bandwith(BW)). In addition to the eight LoRa Technologyreceive channels, the modules provide two additionalreceive channels. The first is a LoRa Technology mod-ulation receive channel capable of 125, 250 or 500 kHzBW). The second provides an FSK/GFSK (EU only)receive channel. Beyond its receiver capability, the modules provide asingle flexibly transmit channel. This transmit channelis capable of both LoRa Technology and FSK/GFSKmodulations at multiple bandwidths (LoRa Technology)or baud rates (FSK/GFSK).The multi-channel, flexible nature of these modulesmakes them ideal for use in LoRa Technology gatewayapplications.The advanced command protocol available over theUART interface provides complete control over the fullcapabilities of RF subsystem in addition to packetreception and transmission.ApplicationsApplications deploying LoRa Technology where gate-way devices are required include: • Automated Meter Reading• Home and Building Automation• Wireless Alarm and Security Systems• Industrial Monitoring and Control• Machine to Machine (M2M)• Internet of Things (IoT)Low-Power Long Range (LoRa®) Technology Gateway Module for US (LG9271) and EU (LG8271)
LG8271/LG9271DS00000000A-page 2 Preliminary  2017 Microchip Technology Inc.Table of ContentsDevice Overview ................................................................................................................................................................................... 3General Specifications .......................................................................................................................................................................... 7Typical Hardware Connections ............................................................................................................................................................11Application Information ........................................................................................................................................................................ 13Regulatory Approval ............................................................................................................................................................................ 15Appendix A: Revision History .............................................................................................................................................................. 19The Microchip Web Site ...................................................................................................................................................................... 21Customer Change Notification Service ............................................................................................................................................... 21Customer Support ............................................................................................................................................................................... 21Product Identification System .............................................................................................................................................................. 22TO OUR VALUED CUSTOMERSIt is our intention to provide our valued customers with the best documentation possible to ensure successful use of your Microchipproducts. To this end, we will continue to improve our publications to better suit your needs. Our publications will be refined andenhanced as new volumes and updates are introduced. If you have any questions or comments regarding this publication, please contact the Marketing Communications Department viaE-mail at docerrors@microchip.com. We welcome your feedback.Most Current Data SheetTo obtain the most up-to-date version of this data sheet, please register at our Worldwide Web site at:http://www.microchip.comYou can determine the version of a data sheet by examining its literature number found on the bottom outside corner of any page.The last character of the literature number is the version number, (e.g., DS30000000A is version A of document DS30000000).ErrataAn errata sheet, describing minor operational differences from the data sheet and recommended workarounds, may exist for currentdevices. As device/documentation issues become known to us, we will publish an errata sheet. The errata will specify the revisionof silicon and revision of document to which it applies.To determine if an errata sheet exists for a particular device, please check with one of the following:• Microchip’s Worldwide Web site; http://www.microchip.com• Your local Microchip sales office (see last page)When contacting a sales office, please specify which device, revision of silicon and data sheet (include literature number) you areusing.Customer Notification SystemRegister on our web site at www.microchip.com to receive the most current information on all of our products.
 2017 Microchip Technology Inc. Preliminary DS00000000A-page 3LG8271/LG92711.0 DEVICE OVERVIEWThe LG8271/LG9271 transceiver modules featureLoRa Technology RF modulation, which provides longrange spread spectrum communication with highinterference immunity. Each module supports eight (8) receive channelsallowing it to receive up to eight LoRa Technologymodulated packets simultaneously. By using LoRaTechnology modulation technique, LG8271/LG9271can achieve a receiver sensitivity of -146 dBm. Whencombined with LoRa Technology transmission devices,the LG8271/LG9271 can provide a system withindustry leading link budget, which makes it optimal forapplications requiring extended range and robustness.The LG8271/LG9271 modules also contain an inte-grated output power amplifier (LNA) providing optimaldownlink signal levels.LoRa Technology modulation also provides significantadvantages in both blocking and selectivity comparedto the conventional modulation techniques, solving thetraditional design compromise between extendedrange, interference immunity, and low-powerconsumption.The LG8271/LG9271 modules deliver exceptional RFselectivity and their multi-channel performance makethem ideal for use in LoRa Technology gatewayapplications.Figure 1-1, Figure 1-2 and Figure 1-3 show the top andbottom view, the pinout, and the block diagram of themodules.FIGURE 1-1: TOP VIEWFIGURE 1-2: PIN DIAGRAM
LG8271/LG9271DS00000000A-page 4 Preliminary  2017 Microchip Technology Inc.FIGURE 1-3: BLOCK DIAGRAMTable 1-1 describes the pins of the module.PIC24FJ128GB204 LoRaBaseband Semtech SX1301 RFESX1257 RFESX1257 UART SPI I/QI/QDebug RFSwitch,PA/LNARFE,etc. 24LC08B EEPROM TABLE 1-1: PIN DESCRIPTIONPin Symbol Type Description1 NC — Not Connected2 VDD Power Positive Supply Terminal3 HOST_INT Output Interrupt to the Host CPU4 GND Power Ground Supply Terminal5 PPS Input GPS PPS Input signal6 NC — Not Connected7 NC — Not Connected8 NC — Not Connected9 GND Power Ground Supply Terminal10 NC — Not Connected11 NC — Not Connected12 NC — Not Connected13 NC — Not Connected14 NC — Not Connected15 GND Power Ground Supply Terminal16 NC — Not Connected17 HOST_URX Input Module UART Receive18 GND Power Ground Supply Terminal19 HOST_UTX Output Module UART Transmit20 RF_ENABLE Input RF Enable Input21 GND Power Ground Supply Terminal22 RESET Input Reset Module23 NC — Not Connected24 VDD Power Positive Supply Terminal25 NC — Not Connected26 GND Power Ground Supply Terminal27 GND Power Ground Supply Terminal28 NC — Not Connected
 2017 Microchip Technology Inc. Preliminary DS00000000A-page 5LG8271/LG927129 GND Power Ground Supply Terminal30 HOST_CLK Input Host I2C Clock31 NC — Not Connected32 HOS_SDA Input/Output HOST I2C Data33 NC — Not Connected34 GND Power Ground Supply Terminal35 GND Power Ground Supply Terminal36 USB_D- — Host USB D-37 GND Power Ground Supply Terminal38 USB_D+ — Host USB D+39 VDD Power Positive Supply Terminal40 GND Power Ground Supply Terminal41 VDD Power Positive Supply Terminal42 LED1 Output LED1 Output43 GND Power Ground Supply Terminal44 LED2 Output LED2 Output45 HOST_MISO Ouput Module SPI Slave Output46 LED3 Output LED3 Output47 HOST_MISO Input Module SPI Slave Input48 PIC_DETECT Input/Output PCI Bus Detect Input. Low = SPI Mode, High = mPCIe/UART49 HOST_SS Input Module SPI Slave Select Input50 GND Power Ground Supply Terminal51 HOST_SCK Input Module SPI Clock Input52 VDD Power Positive Supply TerminalTABLE 1-1: PIN DESCRIPTION (CONTINUED)Pin Symbol Type Description
LG8271/LG9271DS00000000A-page 6 Preliminary  2017 Microchip Technology Inc.NOTES:
 2017 Microchip Technology Inc. Preliminary DS00000000A-page 7LG8271/LG92712.0 GENERAL SPECIFICATIONSTable 2-1 provide the general specifications for the module. Table 2-2 through Table 2-4 provide the electrical charac-teristics, RF receiver charactersitics, LoRa Technology data rate and sensitivity versus spreading factor.TABLE 2-1: GENERAL SPECIFICATIONSpecification DescriptionFrequency Band - LG9271 902.000 MHz to 928.000 MHzFrequency Band - LG8271 863.000 MHz to 870.000 MHzModulation Method FSK (EU only), GFSK (EU only), and LoRa® Technology modulationMaximum Over-the-Air Data Rate 200 kbps (FSK);21875 bps (LoRa Technology, see Ta b l e 2 -4)(1)RF Connection On-board U.FL connectorInterface UART (TTL)Operation Range Up to 15 km coverage at suburban; up to 5 km coverage at urban areaRF TX Power - LG9271 Adjustable, < +18.5 dBm(2)RF TX Power - LG8271 Adjustable, < +14.0 dBm(2)Generated Conductive Harmonics Level Below -70 dBmTemperature (operating) -40°C to +85°CTemperature (storage) -40°C to +115°CHumidity 10% ~ 90% Non-condensingNote 1: Depends on modulation and Expand Spreading Factor (SF)2: TX power is adjustable. For more information, refer to the “LoRa® Technology Gateway Module Software Specifications”TABLE 2-2: ELECTRICAL CHARACTERISTICSParameter Min. Typ. Max. UnitsSupply Voltage 3.0 — 3.6 VVoltage on any pin with respect to VSS (except VDD) -0.3 — -VDD + 0.3 VVoltage on VDD with respect to VSS -0.3 — 3.9 VInput Clamp Current (IIK) (VI < 0 or VI > VDD) — — +/-20 mAOutput Camp Current (IOK) (VO < 0 or VO > VDD) ——+/-20mAGPIO sink/source current each — — 25/25 mATotal GPIO sink/source current — — 200/185 mARAM Data Retention Voltage (in Sleep mode or Reset state) 1.5 — — VVDD Start Voltage to ensure internal Power-on Reset signal ——0.7VVDD Rise Rate to ensure internal Power-on Reset signal 0.05 — — V/msBrown-out Reset Voltage 1.75 1.9 2.05 VLogic Input Low Voltage — — 0.15 x VDD VLogic Input High Voltage 0.8 x VDD — - VInput Leakage at <25°C (VSS<VPIN<VDD, Pin at high-impedance)— 0.1 50 nA
LG8271/LG9271DS00000000A-page 8 Preliminary  2017 Microchip Technology Inc.Input Leakage at +60°C (VSS<VPIN<VDD, Pin at high-impedance)—0.7100nARF Input Level — 0 +6 dBmTABLE 2-2: ELECTRICAL CHARACTERISTICS (CONTINUED)Parameter Min. Typ. Max. UnitsTABLE 2-3: RF RECEIVER CHARACTERISTICSDescriptions Conditions Typ UnitLoRa Technology sensitivity at SF12 : IF8 path BW = 125 kHzBW = 250 kHzBW = 500 kHz-140-137-134dBmLoRa Technology sensitivity at SF12 : IF0 to 7 paths BW = 125 kHz -140 dBm Receiver CW interferer rejection at 1Mhz offset at SF12 BW = 125 kHz +80 dB Co-channel rejection at SF12 Wanted signal 10 dB above sensitivity +25 dB LoRa Technology sensitivity at SF7 : IF8 path BW = 125 kHzBW = 250 kHzBW = 500 kHz -126-123-120dBmLoRa Technology sensitivity at SF7 : IF0 to 7 paths BW = 125 kHz -126 dBm Receiver CW interferer rejection at 1 Mhz offset BW = 125 kHz +70 dB Co-channel rejection at SF7 Wanted signal 10 dB above sensitivity +9 dB FSK sensitivity FDev = 50 kHz, Bit Rate = 100 kb/s-103 dBmBit rate FSK(1) Programmable 1.2 to 100 kbpsFrequency deviation (FDev), FSK Programmable 0.6 to 200 kHz Note 1: Bit rate limited by: FDev + Bit Rate/2 < 250 kHzTABLE 2-4: LoRa TECHNOLOGY DATA RATE (BPS) AND SENSITIVITY VERSUS SPREADING FACTOR (SF)SF 125 kHz 250 kHz(1) 500 kHz(1)Data Rate Sensitivity Data Rate Sensitivity Data Rate Sensitivity7 5496 -130.0 10938 -127.0 21875 -124.08 2125 -132.5 6250 -129.5 12500 -126.59 1758 -135.0 3516 -132.0 7031 -129.010 977 -137.5 1953 -134.5 3906 -131.511 537 -140.0 1074 -137.0 2148 -134.012 293 -142.5 586 -139.5 1172 -136.5Note 1: 250 kHz and 500 kHz LoRa Technology bandwidths are available only on IF8.
 2017 Microchip Technology Inc. Preliminary DS00000000A-page 9LG8271/LG9271Table 2-5 through Table 2-7 provide the currentconsumption, dimensions of the modules and the RFoutput power versus TX power settings. TABLE 2-5: CURRENT CONSUMPTION (3.3V)Mode Current (Typical) mA Current (Max.) mARF Idle 75 100RX Active 570 850TX Active 570 900TABLE 2-6: MODULE DIMENSIONSParameter ValueDimensions 90.0 x 30.0 mmWeight 16gTABLE 2-7: RF OUTPUT POWER (DBM) VERSUS TX POWER SETTING (NOMINAL)Setting Power Setting Power Setting Power Setting Power Setting Power-6 -6 1 0 8 6 15(1) 14 22(1) 20-5 -6 2 0 9 6 16(1) 16 23(1) 23-4 -6 3 3 10 10 17(1) 16 24(1) 23-3 -3 4 3 11 11 18(1) 16 25(1) 25-2 -3 5 3 12 12 19(1) 16 26(1) 26-1 -3 6 6 13 13 20(1) 20 27(1) 2700 7 614(1) 14 21(1) 20Note 1: Power settings 14 - 27 may violate ETSI maximum RF transmit power levels. Verify RF output power before using these settings.
LG8271/LG9271DS00000000A-page 10 Preliminary  2017 Microchip Technology Inc.NOTES:
 2017 Microchip Technology Inc. Preliminary DS00000000A-page 11LG8271/LG92713.0 TYPICAL HARDWARE CONNECTIONSFigure 3-1 shows the typical hardware connections forthe module. Interfacing to the module requires con-necting to the signals provided on the mPCIe connectoras listed in Table 1- 1 . Specific interface connection arediscussed in this chapter.FIGURE 3-1: HARDWARE CONNECTIONS3.1 INTERFACE TO HOST MCUThe LG8271/LG9271 modules have a dedicated UARTinterface to communicate with a host controller. The“LoRa® Technology Gateway Module SoftwareSpecifications” provides a detailed UART commanddescription. Table 3-1 shows the default settings forthe UART interface.3.2 RF CONNECTIONThe LG8271/LG9271 modules have a U.FL connectorfor interfacing with an external antenna. For properoperation, antenna selection must consider frequencyband and impedance.3.3 POWER PINSThe LG8271/LG9271 modules have multiple powerand ground pins available on the mPCIe connector. It is recommended that all power and ground pins beused when connecting to the module.3.4 RESET PINThe LG8271/LG9271 modules have an active-lowreset input. Pulling this signal low during normal oper-ation will cause the module to execute a reset cycle. 3.5 RF_ENABLEThe LG8271/LG9271 modules have an input signalused to enable the RF radio on the module. A low levelon the RF_ENABLE pin will disable all RF transmissionand reception.Antenna mPCIe Interface LGx271 Gateway Module Host MCUTABLE 3-1: UART SETTINGSSpecification ValueSignal Levels TTLBaud Rate 115200 bpsPacket Length 8 bitParity Bit NoStop Bits 1 bitHardware Flow Control No
LG8271/LG9271DS00000000A-page 12 Preliminary  2017 Microchip Technology Inc.3.6 PCI_DETECTThe LG8271/LG9271 modules have an input signalused to select the active host interface. The signal issampled at module start up and the selected interfaceis initialized and configured. A LOW signal on this lineat start up selects the SPI interface (unsupported). AHIGH signal on this line selects the UART interface.3.7 LED OUTPUTSThe LG8271/LG9271 modules have three bufferedoutputs that can sink sufficient current to activate offboard LEDs. These signals are entirely controlled bycommands from the host MCU. Refer to the “LoRa®Technology Gateway Module Software Specifications”for details regarding the commands used to activatethese signals. 3.8 HOST INTERRUPTThe LG8271/LG9271 modules have an output signalthat can be used to provide an interrupt to a host MCU.This feature is currently implemented.
 2017 Microchip Technology Inc. Preliminary DS00000000A-page 13LG8271/LG92714.0 APPLICATION INFORMATION4.1 Physical DimensionsFigure 4-1 and Figure 4-2 illustrate the physicaldimensions of the LG8271/LG9271 modules.FIGURE 4-1: TOP AND BOTTOM VIEW
LG8271/LG9271DS00000000A-page 14 Preliminary  2017 Microchip Technology Inc.FIGURE 4-2: TOP VIEW WITH SHIELD AND SIDE VIEW4.2 Approved AntennasModular certification of the LG9271 module is per-formed with the external antenna type in Table 4-1. For specific regulatory requirements by country, refer toSection 5.0 “Regulatory Approval”.TABLE 4-1: TESTED EXTERNAL ANTENNA TYPESType Gain (dBi)Sleeve Dipole 5
 2017 Microchip Technology Inc. Preliminary DS00000000A-page 15LG8271/LG92715.0 REGULATORY APPROVALThis section outlines the regulatory information for theLG8271/LG9271 module for the following countries:• Europe (LG8271)• United States (LG9271)5.1 EuropeThe LG8271 module has been tested in accordancewith the ETSI EN 300 220-2 V2.4.1 (2012-05) RFstandard and been determined to be compliant.Table 5-1 lists the summary report documenting thecompliance.Additional R&TTE testing is required for Health andSafety (Article (3.1(a)) and ElectromagneticCompatibility (EMC) (Article 3.1(b)).The R&TTE Compliance Association providesguidance on modular devices in document TechnicalGuidance Note 01 available at http://www.rtteca.com/html/download_area.htm.5.1.1 LABELING AND USER INFORMATION REQUIREMENTSThe label on the final product which contains theLG8271 module must follow CE marking requirements.The “R&TTE Compliance Association TechnicalGuidance Note 01” provides guidance on final productCE marking.5.1.2 EXTERNAL ANTENNA REQUIREMENTSFrom R&TTE Compliance Association documentTechnical Guidance Note 01:Provided the integrator installing an assessed radiomodule with an integral or specific antenna andinstalled in conformance with the radio modulemanufacturer's installation instructions requires nofurther evaluation under Article 3.2 of the R&TTEDirective and does not require further involvement ofan R&TTE Directive Notified Body for the final product.[Section 2.2.4]5.1.3 HELPFUL WEB SITESA document that can be used as a starting point inunderstanding the use of Short Range Devices (SRD)in Europe is the European Radio CommunicationsCommittee (ERC) Recommendation 70-03 E, whichcan be downloaded from the European RadioCommunications Office (ERO) at: http://www.ero.dk/. Additional helpful web sites are:• Radio and Telecommunications Terminal Equipment (R&TTE): http://ec.europa.eu/enterprise/sectors/rtte/regulatory-framework/index_en.htm• European Conference of Postal and Telecommunications Administrations (CEPT): http://www.cept.org• European Telecommunications Standards Institute (ETSI): http://www.etsi.org• European Radio Communications Office (ERO): http://www.ero.dk/• The Radio and Telecommunications Terminal Equipment Compliance Association (R&TTE CA):http://www.rtteca.com/Note: To maintain conformance to the testinglisted in Table 5-1: European ComplianceTesting, the module shall be installed inaccordance with the installation instruc-tions in this data sheet and shall not bemodified. When integrating a radio module into acompleted product the integratorbecomes the manufacturer of the finalproduct and is therefore responsible fordemonstrating compliance of the finalproduct with the essential requirements ofthe R&TTE Directive.TABLE 5-1: EUROPEAN COMPLIANCE TESTINGCertification Standards Article Laboratory Report Number DateSafety IEC 60950-1:2005 (2nd Ed: A1:2009)(3.1(a))Health EN 62479 —EMC EN 301 489-3 v1.6.1 (3.1(b))Radio EN 300 220-2 v2.4.1 (3.2) TÜV SÜD AMERICA INC.TP72121077.100 11/14/2015
LG8271/LG9271DS00000000A-page 16 Preliminary  2017 Microchip Technology Inc.5.2 United StatesThe LG9271 module has received FederalCommunications Commission (FCC) CFR47Telecommunications, Part 15 Subpart C “IntentionalRadiators” modular approval in accordance with Part15.212 Modular Transmitter approval. Modularapproval allows the end user to integrate the LG9271module into a finished product without obtainingsubsequent and separate FCC approvals forintentional radiation, provided no changes ormodifications are made to the module circuitry.Changes or modifications could void the user'sauthority to operate the equipment. The end user mustcomply with all of the instructions provided by theGrantee, which indicate installation and/or operatingconditions necessary for compliance.The finished product is required to comply with allapplicable FCC equipment authorizations regulations,requirements and equipment functions not associatedwith the transmitter module portion. For example,compliance must be demonstrated to regulations forother transmitter components within the host product;to requirements for unintentional radiators (Part 15Subpart B “Unintentional Radiators”), such as digitaldevices, computer peripherals, radio receivers, etc.;and to additional authorization requirements for thenon-transmitter functions on the transmitter module(i.e., Verification, or Declaration of Conformity) (e.g.,transmitter modules may also contain digital logicfunctions) as appropriate.5.2.1 LABELING AND USER INFORMATION REQUIREMENTSThe LG9271 module has been labeled with its ownFCC ID number, and if the FCC ID is not visible whenthe module is installed inside another device, then theoutside of the finished product into which the module isinstalled must also display a label referring to theenclosed module. This exterior label can use wordingas follows:A user's manual for the finished product should includethe following statement:Additional information on labeling and user informationrequirements for Part 15 devices can be found in KDBPublication 784748 available at the FCC Office ofEngineering and Technology (OET) LaboratoryDivision Knowledge Database (KDB) https://apps.fcc.gov/oetcf/kdb/index.cfm.Contains Transmitter Module FCC ID: T9JLG9271orContains FCC ID: T9JLG9271This device complies with Part 15 of the FCC Rules.Operation is subject to the following two conditions:(1) this device may not cause harmful interference,and (2) this device must accept any interferencereceived, including interference that may causeundesired operation.This equipment has been tested and found to complywith the limits for a Class B digital device, pursuant topart 15 of the FCC Rules. These limits are designedto provide reasonable protection against harmfulinterference in a residential installation. This equip-ment generates, uses and can radiate radio fre-quency energy, and if not installed and used inaccordance with the instructions, may cause harmfulinterference to radio communications. However,there is no guarantee that interference will not occurin a particular installation. If this equipment doescause harmful interference to radio or televisionreception, which can be determined by turning theequipment off and on, the user is encouraged to try tocorrect the interference by one or more of the follow-ing measures:• Reorient or relocate the receiving antenna.• Increase the separation between the equipment and receiver. • Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.• Consult the dealer or an experienced radio/TV technician for help.
 2017 Microchip Technology Inc. Preliminary DS00000000A-page 17LG8271/LG92715.2.2 RF EXPOSUREAll transmitters regulated by FCC must comply with RFexposure requirements. KDB 447498 General RFExposure Guidance provides guidance in determiningwhether proposed or existing transmitting facilities,operations or devices comply with limits for humanexposure to Radio Frequency (RF) fields adopted bythe Federal Communications Commission (FCC).From the LG9271 FCC Grant: Output power listed isconducted. This grant is valid only when the module issold to OEM integrators and must be installed by theOEM or OEM integrators. This transmitter is restrictedfor use with the specific antenna(s) tested in thisapplication for Certification and must not be co-locatedor operating in conjunction with any other antenna ortransmitters within a host device, except in accordancewith FCC multi-transmitter product procedures.5.2.3 APPROVED EXTERNAL ANTENNA TYPESTo maintain modular approval in the United States, onlythe antenna types that have been tested shall be used.It is permissible to use different antenna manufacturerprovided the same antenna type and antenna gain(equal to or less than) is used.Testing of the LG9271 module was performed with theantenna types listed in Table 4-1 Tested ExternalAntenna Types.5.2.4 HELPFUL WEB SITESFederal Communications Commission (FCC): http://www.fcc.govFCC Office of Engineering and Technology (OET)Laboratory Division Knowledge Database (KDB):https://apps.fcc.gov/oetcf/kdb/index.cfm5.3 CanadaThe LG8271 module has been certified for use inCanada under Industry Canada (IC) Radio StandardsSpecification (RSS) RSS-247 and RSS-Gen. Modularapproval permits the installation of a module in a hostdevice without the need to recertify the device.5.3.1 LABELING AND USER INFORMATION REQUIREMENTSLabeling Requirements for the Host Device (fromSection 3.1, RSS-Gen, Issue 4, November 13, 2014):The host device shall be properly labeled to identify themodule within the host device.The Industry Canada certification label of a moduleshall be clearly visible at all times when installed in thehost device, otherwise the host device must be labeledto display the Industry Canada certification number ofthe module, preceded by the words “Containstransmitter module”, or the word “Contains”, or similarwording expressing the same meaning, as follows:User Manual Notice for License-Exempt RadioApparatus (from Section 8.4 RSS-Gen, Issue 4,November 13, 2014): User manuals for license-exemptradio apparatus shall contain the following orequivalent notice in a conspicuous location in the usermanual or alternatively on the device or both:Transmitter Antenna (from Section 8.3 RSS-Gen, Issue4, November 13, 2014): User manuals for transmittersshall display the following notice in a conspicuouslocation:The above notice may be affixed to the device insteadof displayed in the user manual.Contains transmitter module IC: 6514A-LG9271.This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to thefollowing two conditions: (1) this device may notcause interference, and (2) this device must acceptany interference, including interference that maycause undesired operation of the device.Le présent appareil est conforme aux CNR d'Indus-trie Canada applicables aux appareils radio exemptsde licence. L'exploitation est autorisée aux deux con-ditions suivantes: (1) l'appareil ne doit pas produirede brouillage, et (2) l'utilisateur de l'appareil doitaccepter tout brouillage radioélectrique subi, même sile brouillage est susceptible d'en compromettre lefonctionnement.Under Industry Canada regulations, this radio trans-mitter may only operate using an antenna of a typeand maximum (or lesser) gain approved for the trans-mitter by Industry Canada. To reduce potential radiointerference to other users, the antenna type and itsgain should be so chosen that the equivalent isotrop-ically radiated power (e.i.r.p.) is not more than thatnecessary for successful communication.Conformément à la réglementation d'Industrie Can-ada, le présent émetteur radio peut fonctionner avecune antenne d'un type et d'un gain maximal (ouinférieur) approuvé pour l'émetteur par Industrie Can-ada. Dans le but de réduire les risques de brouillageradioélectrique à l'intention des autres utilisateurs, ilfaut choisir le type d'antenne et son gain de sorte quela puissance isotrope rayonnée équivalente (p.i.r.e.)ne dépasse pas l'intensité nécessaire à l'établisse-ment d'une communication satisfaisante.
LG8271/LG9271DS00000000A-page 18 Preliminary  2017 Microchip Technology Inc.User manuals for transmitters equipped withdetachable antennas shall also contain the followingnotice in a conspicuous location:Immediately following the above notice, themanufacturer shall provide a list of all antenna typesapproved for use with the transmitter, indicating themaximum permissible antenna gain (in dBi) andrequired impedance for each. 5.3.2 RF EXPOSUREAll transmitters regulated by IC must comply with RFexposure requirements listed in RSS-102 - Radio Fre-quency (RF) Exposure Compliance of Radiocommuni-cation Apparatus (All Frequency Bands). Currently thisdevice is approved for use for when 20 cm can bemaintained between the antenna and users.Specific Absorption Rate (SAR) evaluation is requiredif the separation distance between the user and/orbystander and the antenna and/or radiating element ofthe device is less than or equal to 20 cm. Exceptionsare listed in RSS-102. Note that integration < 20 cm willrequire further certification with IC such as a Multiplelisting and Class IV Permissive Change application.Tous les émetteurs régulés par Industrie Canadadoivent ętre conformes à la notice RSS-102 d'IndustrieCanada concernant la Conformité des appareils deradiocommunication aux limites d'exposition humaineaux radiofréquences (toutes bandes de fréquences).Ce produit est ainsi approuvé pour une utilisation d'aumoins 20 cm entre l'antenne et toute personne à prox-imité. Une évaluation du Débit d'Absorption Spécifique (DAS)est requise si cette distance de séparation estinférieure ou égale à 20 cm. Des exceptions sont toute-fois répertoriés dans la notice RSS-102. Mais il estsouligné que l'utilisation d'un dispositif à moins de 20cm nécessite une certification supplémentaire avecIndustrie Canada, comme un complément d'informa-tion et l'application à la notice de Changement Permis-sif de Classe IV.5.3.3 APPROVED EXTERNAL ANTENNA TYPESTransmitter Antenna (from Section 8.3 RSS-Gen, Issue4, November 13, 2014):The LG9271 module can only be sold or operated withantennas with which it was approved. Transmitter maybe approved with multiple antenna types. An antennatype comprises antennas having similar in-band andout-of-band radiation patterns. Testing shall beperformed using the highest gain antenna of eachcombination of transmitter and antenna type for whichapproval is being sought, with the transmitter outputpower set at the maximum level. Any antenna of thesame type having equal or lesser gain as an antennathat had been successfully tested with the transmitter,will also be considered approved with the transmitter,and may be used and marketed with the transmitter. When a measurement at the antenna connector isused to determine RF output power, the effective gainof the device's antenna shall be stated, based onmeasurement or on data from the antennamanufacturer. For transmitters of output power greaterthan 10 milliwatts, the total antenna gain shall be addedto the measured RF output power to demonstratecompliance to the specified radiated power limits.Testing of the LG9271 module was performed with theantenna types listed in Ta ble 4-1 Te s t e d E x t ernalAntenna Types.5.3.4 HELPFUL WEB SITESIndustry Canada: http://www.ic.gc.ca/This radio transmitter (identify the device by certifica-tion number, or model number if Category II) has beenapproved by Industry Canada to operate with theantenna types listed below with the maximum permis-sible gain and required antenna impedance for eachantenna type indicated. Antenna types not included inthis list, having a gain greater than the maximum gainindicated for that type, are strictly prohibited for usewith this device.Conformément à la réglementation d'Industrie Can-ada, le présent émetteur radio peut fonctionner avecune antenne d'un type et d'un gain maximal (ouinférieur) approuvé pour l'émetteur par Industrie Can-ada. Dans le but de réduire les risques de brouillageradioélectrique à l'intention des autres utilisateurs, ilfaut choisir le type d'antenne et son gain de sorte quela puissance isotrope rayonnée équivalente (p.i.r.e.)ne dépasse pas l'intensité nécessaire à l'établisse-ment d'une communication satisfaisante.
 2017 Microchip Technology Inc. Preliminary DS00000000A-page 19LG8271/LG9271APPENDIX A: REVISION HISTORYRevision A (March 2017)This is the initial released version of the document.
LG8271/LG9271DS00000000A-page 20 Preliminary  2017 Microchip Technology Inc.NOTES:
 2017 Microchip Technology Inc. Preliminary DS00000000A-page 21RN4678THE MICROCHIP WEB SITEMicrochip provides online support via our WWW site atwww.microchip.com. This web site is used as a meansto make files and information easily available tocustomers. Accessible by using your favorite Internetbrowser, the web site contains the followinginformation:•Product Support – Data sheets and errata, application notes and sample programs, design resources, user’s guides and hardware support documents, latest software releases and archived software•General Technical Support – Frequently Asked Questions (FAQ), technical support requests, online discussion groups, Microchip consultant program member listing•Business of Microchip – Product selector and ordering guides, latest Microchip press releases, listing of seminars and events, listings of Microchip sales offices, distributors and factory representativesCUSTOMER CHANGE NOTIFICATION SERVICEMicrochip’s customer notification service helps keepcustomers current on Microchip products. Subscriberswill receive e-mail notification whenever there arechanges, updates, revisions or errata related to aspecified product family or development tool of interest.To register, access the Microchip web site atwww.microchip.com. Under “Support”, click on“Customer Change Notification” and follow theregistration instructions.CUSTOMER SUPPORTUsers of Microchip products can receive assistancethrough several channels:• Distributor or Representative• Local Sales Office• Field Application Engineer (FAE)• Technical SupportCustomers should contact their distributor,representative or Field Application Engineer (FAE) forsupport. Local sales offices are also available to helpcustomers. A listing of sales offices and locations isincluded in the back of tRN4678his document.Technical support is available through the web siteat: http://microchip.com/support
LG8271/LG9271DS00000000A-page 22 Preliminary  2017 Microchip Technology Inc.PRODUCT IDENTIFICATION SYSTEMTo order or obtain information, for example, on pricing or delivery, refer to the factory or the listed sales office. Device: LG8271/LG9271: Low-Power Long Range LoRa® Technology Transceiver moduleTemperature Range: I=-40°C to +85°C (Industrial)Package: RM =Radio ModuleExample:LG8271-I/RM000: Industrial temperature PART NO.DeviceITemperatureRangeRMPackageXXXFirmware Revision Number
 2017 Microchip Technology Inc. Preliminary DS00000000A-page 23Information contained in this publication regarding deviceapplications and the like is provided only for your convenienceand may be superseded by updates. It is your responsibility toensure that your application meets with your specifications.MICROCHIP MAKES NO REPRESENTATIONS ORWARRANTIES OF ANY KIND WHETHER EXPRESS ORIMPLIED, WRITTEN OR ORAL, STATUTORY OROTHERWISE, RELATED TO THE INFORMATION,INCLUDING BUT NOT LIMITED TO ITS CONDITION,QUALITY, PERFORMANCE, MERCHANTABILITY ORFITNESS FOR PURPOSE. Microchip disclaims all liabilityarising from this information and its use. Use of Microchipdevices in life support and/or safety applications is entirely atthe buyer’s risk, and the buyer agrees to defend, indemnify andhold harmless Microchip from any and all damages, claims,suits, or expenses resulting from such use. No licenses areconveyed, implicitly or otherwise, under any Microchipintellectual property rights unless otherwise stated.TrademarksThe Microchip name and logo, the Microchip logo, AnyRate, AVR, AVR logo, AVR Freaks, BeaconThings, BitCloud, CryptoMemory, CryptoRF, dsPIC, FlashFlex, flexPWR, Heldo, JukeBlox, KEELOQ, KEELOQ logo, Kleer, LANCheck, LINK MD, maXStylus, maXTouch, MediaLB, megaAVR, MOST, MOST logo, MPLAB, OptoLyzer, PIC, picoPower, PICSTART, PIC32 logo, Prochip Designer, QTouch, RightTouch, SAM-BA, SpyNIC, SST, SST Logo, SuperFlash, tinyAVR, UNI/O, and XMEGA are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries.ClockWorks, The Embedded Control Solutions Company, EtherSynch, Hyper Speed Control, HyperLight Load, IntelliMOS, mTouch, Precision Edge, and Quiet-Wire are registered trademarks of Microchip Technology Incorporated in the U.S.A.Adjacent Key Suppression, AKS, Analog-for-the-Digital Age, Any Capacitor, AnyIn, AnyOut, BodyCom, chipKIT, chipKIT logo, CodeGuard, CryptoAuthentication, CryptoCompanion, CryptoController, dsPICDEM, dsPICDEM.net, Dynamic Average Matching, DAM, ECAN, EtherGREEN, In-Circuit Serial Programming, ICSP, Inter-Chip Connectivity, JitterBlocker, KleerNet, KleerNet logo, Mindi, MiWi, motorBench, MPASM, MPF, MPLAB Certified logo, MPLIB, MPLINK, MultiTRAK, NetDetach, Omniscient Code Generation, PICDEM, PICDEM.net, PICkit, PICtail, PureSilicon, QMatrix, RightTouch logo, REAL ICE, Ripple Blocker, SAM-ICE, Serial Quad I/O, SMART-I.S., SQI, SuperSwitcher, SuperSwitcher II, Total Endurance, TSHARC, USBCheck, VariSense, ViewSpan, WiperLock, Wireless DNA, and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries.SQTP is a service mark of Microchip Technology Incorporated in the U.S.A.Silicon Storage Technology is a registered trademark of Microchip Technology Inc. in other countries.GestIC is a registered trademark of Microchip Technology Germany II GmbH & Co. KG, a subsidiary of Microchip Technology Inc., in other countries. All other trademarks mentioned herein are property of their respective companies.© 2017, Microchip Technology Incorporated, All Rights Reserved. ISBN: Note the following details of the code protection feature on Microchip devices:• Microchip products meet the specification contained in their particular Microchip Data Sheet.• Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions.• There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data Sheets. Most likely, the person doing so is engaged in theft of intellectual property.• Microchip is willing to work with the customer who is concerned about the integrity of their code.• Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as “unbreakable.”Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of ourproducts. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such actsallow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.Microchip received ISO/TS-16949:2009 certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona; Gresham, Oregon and design centers in California and India. The Company’s quality system processes and procedures are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping devices, Serial EEPROMs, microperipherals, nonvolatile memory and analog products. In addition, Microchip’s quality system for the design and manufacture of development systems is ISO 9001:2000 certified.QUALITYMANAGEMENTSYSTEMCERTIFIEDBYDNV== ISO/TS16949==
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