Lierda Science and Technology Group LSD4RF2F917N10 915MHz LoRa Module User Manual

Lierda Science & Technology Group Co.,Ltd 915MHz LoRa Module Users Manual

Users Manual

Add: Building 1, Lierda IoT Park, No.1326, wenyixi Road, Hangzhou, Zhejiang ChinaTel: +86 571 88800000 Fax:+86 571 89908080Lierda Science & Technology Group Co.,Ltd利尔达科技集团股份有限公司Operation Manualfor Wireless IoT TransceiverProduct Name: SX1278 Wireless TransceiverProduct Number：LSD4RF-29717N10Revision : V1.0
Add: Building 1, Lierda IoT Park, No.1326, wenyixi Road, Hangzhou, Zhejiang ChinaTel: +86 571 88800000 Fax:+86 571 89908080Document HistoryProductNameSX1278 Wireless TransceiverProduct NumberLSD4RF-2F917N10Checker刘建Submission Date20160721No.Revise HistoryCheckerApproverRevisionSubmissionDate1First FINAL document version刘建孙香涛V1.02016-07-21
Add: Building 1, Lierda IoT Park, No.1326, wenyixi Road, Hangzhou, Zhejiang ChinaTel: +86 571 88800000 Fax:+86 571 89908080Contents1General Description........................................................................................................................................42 Technical requirement specifications....................................................................................................... 63 Module Mechanical Drawing & Pin Description.......................................................................................... 74 Operating Description.................................................................................................................................... 85 Additional information................................................................................................................................. 96 Antenna specification................................................................................................................................. 10Important Notes:................................................................................................................................................. 11
Add: Building 1, Lierda IoT Park, No.1326, wenyixi Road, Hangzhou, Zhejiang ChinaTel: +86 571 88800000 Fax:+86 571 899080801 General DescriptionThe LSD4RF-2F917N10 module is a high-performance RF transceiver with a highlyintegrated SX127X. Using Semtech’s patented LoRaTM modulation technique can greatlyincrease the communication distance, which is widely applied to various occasions of shortdistance IoT wireless communication field. It has small size, low power consumption, longtransmission distance, strong immunity from interference and other characteristics. The usercan be free to choose different antenna , consequently, is easy to second development and itspopularization.KEY PRODUCT FEATURES● Supply voltage: DC 2.4 ～3.6 V● Operating Frequency:900~925MHz● RF output power: 19±1 dBm(max)● High sensitivity：-136±1dBm (@250bps)● Ultra effective communication distances:5Km@250bps（Urban road environment, notthe desert environment）● Using spread spectrum modem, which is capable of achieving significantly longerrange than existing systems based on FSK or OOK modulation. It provides significantadvantages ,especially in the terrible noise environment (eg. nearby the strong interferencesources and in the natural shielding environment)● High confidentiality, using LoRaTM modulation , traditional wireless devices can notcapture and parse.● High concealment,it still can normal communication when average power underDigital Noise Floor, wireless monitoring equipment unable to listen to.● Support LoRaTM, FSK, GFSK, MSK, GMSK and OOK modulation● Low power consumption：current in receive mode ≤13mA ；current in sleep mode≤2uA；Provide CAD functions which separate the calculation and reception, further optimizethe power consumption of waking up the window. (the calculating current is about half ofreceving current).
Add: Building 1, Lierda IoT Park, No.1326, wenyixi Road, Hangzhou, Zhejiang ChinaTel: +86 571 88800000 Fax:+86 571 89908080● SPI communication interface,it can be connected directly to all kinds ofmicrocontroller, the software programming is very convenient.APPLICATIONS● Automated Meter Reading for water meter, gas meter, electricity meter, thermal meter● Ultra-long range communication● Home and Building Automation● Industrial remote sensing, telemetering communication● Industrial Monitoring and Control, Wireless Alarm and Security Systems● Active RFID
Add: Building 1, Lierda IoT Park, No.1326, wenyixi Road, Hangzhou, Zhejiang ChinaTel: +86 571 88800000 Fax:+86 571 899080802 Technical requirement specificationsTable 1 Module SpecificationsParameterPerformance RequirementsRemarksSupply VoltageDC 2.4 ～3.6 VOperating Temperature-40 ～85 ℃Operating Humidity10%~90%non-condensingOperating Frequency900~925 MHzProgrammablePower ConsumptionTransmit mode≤100 mAConditions:900~925 MHz, Pout=17 dBmReceiver mode≤17mAConditions:900~925 MHz, LoRaTM ModemSleep mode≤2uARF output power19 ± 1dBmProgrammableModulationsLoRaTM\2-FSK\GFSK\OOKRecommended: LoRaTMBit Rate RangeOOK：1.2~32.768KbpsProgrammableRecommended: use LoRaTMat low bit rate (<5kbps)LoRaTM：0.2~37.5Kbpsinterface typestamp holePitch: 2.0mmcommunicationinterfaceSPIModule Size(without antenna)18.4 × 18.4（GB/T1804-c）Unit：mmStatic LevelRefer to chapter 5Interface SelectionRefer to chapter 5
Add: Building 1, Lierda IoT Park, No.1326, wenyixi Road, Hangzhou, Zhejiang ChinaTel: +86 571 88800000 Fax:+86 571 899080803 Module Mechanical Drawing & Pin DescriptionAs shown in the bottom view of Figure 1, the LSD4RF-2F917N10 connects to the hostboard via solder pads on the module.Unit：mmFigure 1 LSD4RF-2F917N10 Module Mechanical DrawingTable 2 shows Pin Description ：Table 2 LSD4RF-2F917N10 Pin DescriptionNumberNameDescription1VCCSupply voltage2GNDGround3SISPI Data input4SCKSPI Clock input
Add: Building 1, Lierda IoT Park, No.1326, wenyixi Road, Hangzhou, Zhejiang ChinaTel: +86 571 88800000 Fax:+86 571 899080805SOSPI Data output6DIO1RxTimeout、CadDetected7DIO28NSSSPI enabled9DIO0Required，RxDone、TxDone、CadDone10RSTRequired, Reset trigger input11GNDGround12RFRF input / output13DIO5ModeReady、ClkOut14DIO3ModeReady、ClkOutFor more information about DIOx that can be found in the chapter 5.4 Operating DescriptionThe LSD4RF-2F917N10 module is soldered to the applications main board andcommunication with micro-controller by SPI interface. Figure below shows a typical SPI singleaccess to a register. To get the detail description, please consult the latest data sheet ofSX1278.Figure 2 SPI Timing Diagram (single access)
Add: Building 1, Lierda IoT Park, No.1326, wenyixi Road, Hangzhou, Zhejiang ChinaTel: +86 571 88800000 Fax:+86 571 899080805 Additional informationTo maximize RF performance, the user should follow these recommendations:1. Power SupplyIt is recommended to use DC regulated power supply to the module, and the small powersupply ripple coefficient is required. The module should be reliable grounding, and pleasepay attention to the correct connection power, if reverse, maybe result in permanent damageto the module.2. About AntennaEnsure that there is no component, mounting screw or ground plane near the antenna.All these incorrect design can reduce the communication distance of module seriously.3. Protection of ESD electrostaticModules can be static tested by connecting discharge 4 kv, air discharge 8 kv;The arc distance module about 10 cm when air discharge;Therefore, it shall takes all necessary ESD measures in order to avoid permanent damage tothe device.4. Trade-offs advice on DIOxDIO has three functions, The first is the RF interrupt flag reflects, the other is thePLL_Lock signal output, a third is Clock signal output of the RF module (generally do not usethis function). Under the condition of without considering power consumption, can not use anyDIO.In most application scenarios (transceiver, low-power wake up), DIO0 will choose IO,other IO can choice according to the situation.DIO0, DIO1, DIO3 contains all interrupt mapping, If you don't use this feature, DIO0,DIO3 will meet the requirements;2F717N01 module provides DIO0,DIO1,DIO32F717N10 module provides DIO0,DIO1,DIO2,DIO3,DIO42F917N10 module provides DIO0,DIO1,DIO2,DIO3,DIO52F917N10 module provides DIO0,DIO1,DIO2,DIO3,DIO5DIO mapping is shown below:
Add: Building 1, Lierda IoT Park, No.1326, wenyixi Road, Hangzhou, Zhejiang ChinaTel: +86 571 88800000 Fax:+86 571 899080806 Antenna specificationantenna change may lead further evaluation on emission as per FCC part 15c.
Add: Building 1, Lierda IoT Park, No.1326, wenyixi Road, Hangzhou, Zhejiang ChinaTel: +86 571 88800000 Fax:+86 571 89908080Important Notes:1. Welcome to use the products of the Lierda Technology Co., Ltd.. Before using the
Add: Building 1, Lierda IoT Park, No.1326, wenyixi Road, Hangzhou, Zhejiang ChinaTel: +86 571 88800000 Fax:+86 571 89908080products of our company, please read this warning first. If you have already used the productwhich indicates that you have read and accepted the warning. Using the product indicates thatyou have read and accepted this warning.2. The final interpretation and modification of all the information provided to this toolare reserved. No more notification will be given if the information were updated.Publisher: Lierda Science & Technology Co.,LtdWSN Dept.2016/ 07/21FCCID: N8NLSD4RF2F917N10FCC statementThis equipment has been tested and found to comply with the limits for a Class B digitaldevice, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonableprotection against harmful interference in a residential installation. This equipment generates,uses and can radiate radio frequency energy and, if not installed and used in accordance withthe instructions, may cause harmful interference to radio communications.However, there is no guarantee that interference will not occur in a particular installation.·If this equipment does cause harmful interference to radio or television reception, which canbe determined by turning the equipment off and on, the user is encouraged to try to correct theinterference by one or more of the following 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 isconnected.—Consult the dealer or an experienced radio/TV technician for help.RF exposure warning·The equipment complies with FCC RF exposure limits set forth for an uncontrolledenvironment.The equipment must not be co-located or operating in conjunction with any other antenna or
Add: Building 1, Lierda IoT Park, No.1326, wenyixi Road, Hangzhou, Zhejiang ChinaTel: +86 571 88800000 Fax:+86 571 89908080transmitter.NOTE: Any changes or modifications not expressly approved by the grantee of this devicecould void the user's authority to operate the equipment.The module’s FCC ID is not visible when installed in the host, or If the host is marketed sothat end users do not have straight forward commonly used methods for access to remove themodule so that the FCC ID of the module is visible; then an additional permanent labelreferring to the enclosed module: Contains Transmitter Module FCC ID:N8NLSD4RF2F917N10; or Contains FCC ID: N8NLSD4RF2F917N10 must be used.This device is intended for OEM integrators only.further evaluation to the host level with regards to un-intential spurious emission as per FCC15B

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