Chengdu Ebyte Electronic Technology E22900T22S Lora Module User Manual E01 2G4M27D v1 0

Chengdu Ebyte Electronic Technology Co., Ltd. Lora Module E01 2G4M27D v1 0

User Manual

E22-900T22S User Manual SX1262 SMD Wireless Module
CONTENTS1. OVERVIEW........................................................................................................................................31.1 INTRODUCTION............................................................................................................................................................... 31.2 FEATURES........................................................................................................................................................................31.3 APPLICATION...................................................................................................................................................................31.4 FUNCTION INTRODUCTION...............................................................................................................................................42. SPECIFICATION AND PARAMETER..............................................................................................52.1 LIMIT PARAMETER............................................................................................................................................................ 52.2 OPERATING PARAMETER...................................................................................................................................................53. SIZE AND PIN DEFINITION........................................................................................................... 64. CONNECT TO MCU.........................................................................................................................85. FUNCTION DESCRIPTION............................................................................................................. 85.1 FIXED TRANSMISSION.......................................................................................................................................................85.2 BROADCASTING TRANSMISSION........................................................................................................................................95.3 BROADCASTING ADDRESS.................................................................................................................................................95.4 MONITOR ADDRESS......................................................................................................................................................... 95.5 RESET............................................................................................................................................................................. 95.6 AUX DESCRIPTION........................................................................................................................................................ 105.6.1 Indication of UART output................................................................................................................................105.6.2 Indication of wireless transmitting...................................................................................................................105.6.3 Configuration procedure of module................................................................................................................115.6.4 Notes for AUX....................................................................................................................................................116. OPERATING MODE.......................................................................................................................116.1 MODE SWITCHING.........................................................................................................................................................126.2 NORMAL MODE（MODE 0）........................................................................................................................................126.3 WOR MODE（MODE 1）............................................................................................................................................ 136.4 CONFIGURATION MODE（MODE 2）............................................................................................................................ 136.5 DEEP SLEEP MODE（MODE 3）.................................................................................................................................... 137. REGISTER READ AND WRITE CONTROL...................................................................................137.1 COMMAND FORMAT......................................................................................................................................................137.2 REGISTER DESCRIPTION.................................................................................................................................................. 157.3 FACTORY DEFAULT PARAMETER...................................................................................................................................... 17
Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manual8. REPEATER NETWORKING MODE...............................................................................................179. CONFIGURATION INSTRUCTIONS ON COMPUTER...............................................................1810. HARDWARE DESIGN..................................................................................................................1911. FAQ............................................................................................................................................... 2011.1 COMMUNICATION RANGE IS TOO SHORT......................................................................................................................2011.2 MODULE IS EASY TO DAMAGE......................................................................................................................................2011.3 BER(BIT ERROR RATE)IS HIGH..................................................................................................................................2112. PRODUCTION GUIDANCE........................................................................................................ 2112.1 REFLOW SOLDERING TEMPERATURE.............................................................................................................................. 2112.2 REFLOW SOLDERING CURVE......................................................................................................................................... 2213. E22 SERIES................................................................................................................................... 2214. ANTENNA RECOMMENDATION............................................................................................. 2315. PACKAGE FOR BATCH ORDER................................................................................................. 23REVISION HISTORY.......................................................................................................................... 24ABOUT US.......................................................................................................................................... 24
Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manualCopyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.31. Overview1.1 IntroductionE22-900T22S is a wireless serial port module (UART) based on SEMTECH's SX1262 RF chip. Working in the 902MHz~928MHz, (default 900.125MHz), LoRa spread spectrum technology, TTL level output, compatible with 3.3V and 5V IO port voltage.LoRa direct sequence spread spectrum technology will bring longer communication distance, and has theadvantages of concentrated power density and strong anti-interference ability. The module has a software FECforward error correction algorithm, which has high coding efficiency and strong error correction capability. In thecase of sudden interference, it can actively correct the interfered data packets, greatly improving reliability andtransmission distance. When without FEC, such packets can only be discarded.The module has data encryption. Data transmitted over the air, with randomness, makes data interceptionmeaningless through strict encryption and decryption algorithms. The module reserves multiple IO interfaces toprovide custom development services.It supports packet length setting and also supports different real-time anddata packets.1.2 FeaturesCommunication distance tested is up to 5kmMaximum transmission power of 182.8mW;Support the global license-free ISM 915MHz band;Support air date rate of 0.3kbps～62.5kbps;Support new generation LoRa technology based on SX1262;Compared with SX1276, the power consumption of hardware is reduced by 40%,and the power consumptionof software is reduced by 35%;Compared with the SX1276, for the same power consumption, the transmission power is increased by 80%;Low power consumption for battery supplied applications;Support 2.3V~5.5V power supply, power supply over 5.0 V can guarantee the best performance;Industrial grade standard design, support -40 ~ 85 °C for working over a long time;IPEX and stamp hole optional, good for secondary development and integration.1.3 ApplicationHome security alarm and remote keyless entry;;
Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manualCopyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.4Smart home and industrial sensors;Wireless alarm security system;Building automation solutions;Wireless industrial-grade remote control;Health care products;Advanced Meter Reading Architecture(AMI);Automotive industry applications.1.4 Function introductionLoRa spread spectrum: LoRa direct sequence spread spectrum technology will bring longer communication distance;low transmit power density, it is not easy to cause interference to other equipment.High confidentiality, extremely low probability of interception; strong anti-interference ability, strong suppression ofco-channel interference and various noises; excellent anti-multipath fading performance.LBT: The module has a Listen before talk (LBT) function. When this function is enabled, the module actively monitors thechannel environment noise before transmitting. If the noise exceeds the threshold, it will be sent delayed. This feature cangreatly improve the communication success rate of the module in harsh environments. This function can be used fornetwork transmission and anti-collision processing.RSSI: The signal strength indication function. The module supports packet signal strength serial output. Can be used toassess signal quality, improve communication networks, and ranging. The module supports ambient noise signal strengthserial output. It can be used to implement LBT functions manually.Wireless configuration: Remotely configure or read wireless module parameters by sending command packetswirelessly.Networking function: The module can implement multi-level repeater networking. Multi-level repeater is suitable forultra long-distance communication. Multiple networks in the same area can run simultaneously.Ultra-low power consumption: the air wake-up function. It is especially suitable for battery-powered applications: whenthe module is in WOR state, the configuration module WOR monitors the overall power consumption of the adjustablemodule. The maximum configurable response delay of the module is 4000ms. The average current of the module in thismode is about 2uA.Fixed-point transmission: supports address function, the host can transmit data to any address, any channel, to achievenetworking, repeater and other application. For example: module A transmits data to module B (address is 0x00 01,channel is 0x80), date is AA BB CC, the communication format is: 00 01 80 AA BB CC, where 00 01 is the module B addressand 80 is the module B channel, then module B can receive the AA BB CC (other modules do not receive data).Broadcast monitoring: Set the module address to 0xFFFF, which can monitor the data transmission of the module on thesame channel; the transmitted data can be received by the module of any address on the same channel, thus playing therole of broadcasting and monitoring.Forward error correction: The module has FEC forward error correction algorithm, which has high coding efficiency andstrong error correction capability. In the case of sudden interference, it can actively correct the interfered data packets,greatly improving reliability and transmission distance. When without FEC, such packets can only be discarded.
Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manualCopyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.5Deep sleep function: When the module is in sleep mode, mode 3, the wireless receiver is turned off and themicro-controller is in a sleep state; at this time, the power consumption of the whole device is about 2uA.Watchdog: The module has a built-in watchdog and performs precise time layout. Once an exception occurs, themodule will restart within 1 second and continue to work according to the previous parameter settings.Parameter saving: After the user sets the parameters, the module parameters will be saved, the power will not be lost,and the module will work according to the set parameters after power-on.Applicable environment: 900MHz is free frequency band, users can use it directly without application; 900MHz featurescertain penetration and diffraction ability, suitable for environment with small data volume, long transmission distanceand easy to be interfered.2. Specification and parameter2.1 Limit parameterMain parameterPerformanceRemarkMin.Max.Power supply（V）05.5Voltage over 5.5V will cause permanentdamage to moduleBlocking power（dBm）-10Chances of burn is slim when modulesare used in short distanceOperating temperature（℃）-4085/2.2 Operating parameterMain parameterPerformanceRemarkMin.Typ.Max.Operating voltage（V）2.35.05.5≥5.0 V ensures output powerCommunication level（V）3.3For 5V TTL, it may be at risk of burningdownOperating temperature（℃）-40-85Industrial designOperating frequency（MHz）902-928Support ISM bandPowerconsumptionTX current（mA）133Instant power consumptionRX current（mA）11Sleep current （μA）469Software is shut downMax Tx power（dBm）- - -Receiving sensitivity（dBm）-146-147-148Air data rate is 2.4kbpsAir data rate（bps）0.3k2.4k62.5kControlled via user’s programmingMain parameterDescriptionRemarkDistance for reference5000m Test condition：clear and open area, antenna gain: 3dBi，
Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manualCopyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.6antenna height: 2.5m，air data rate: 2.4kbpsTX length240 BtyeCan be configured via command as 32/64/128/240bytes per packet to transmitBuffer1000 BtyeModulationLoRaCommunication interface UARTPackage SMDConnector 1.27mmSize 16 * 26 mmAntenna IPEX/stamp hole 50 ohm impedance3. Size and pin definitionNo.NameDirectionFunction1GNDGround
Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manualCopyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.72GNDGround3GNDGround4GNDGround5M0Input（weak pull-up）Work with M1 to decide 4 working modes of module (not suspended, if notused, could be grounded).6M1Input（weak pull-up）Work with M0 to decide 4 working modes of module (not suspended, if notused, could be grounded).7RXDInputTTL UART inputs, connects to external (MCU, PC) TXD output pin. Can beconfigured as open-drain or pull-up input.8TXDOutputTTL UART outputs, connects to external RXD (MCU, PC) input pin. Can beconfigured as open-drain or push-pull output9AUXOutputTo indicate module ’ s working status & wakes up the external MCU.During the procedure of self-check initialization, the pin outputs low level.Can be configured as push-pull output (suspending is allowed).10VCCPower supply ：2.3~ 5.2V DC11GNDGround12NC13GNDGround14NC15NC16NC17NC18NC19GNDGround20GNDGround21ANTAntenna22GNDGround
Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manualCopyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.84. Connect to MCUNo.Description（STM8L MCU）1The UART module is TTL level.2For some MCU works at 5VDC, it may need to add 4-10K pull-up resistor for the TXD & AUX pin.5. Function description5.1 Fixed transmission
Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manualCopyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.95.2 Broadcasting transmission5.3 Broadcasting addressFor example: Set the address of module A as 0xFFFF or 0x0000, and the channel as 0x04;When module is the transmitter (transparent transmission), all modules under channel 0x04 will receive the data, thepurpose of broadcast is realized.5.4 Monitor addressFor example: Set the address of module A as 0xFFFF or 0x0000, and the channel as 0x04;When module A is the receiver, it can receive the data sent from all modules under channel 0x04, the purpose of monitoris realized.5.5 ResetWhen the module is powered, AUX outputs low level immediately, conducts hardware self-check and sets the operating modebased on user’s parameters. During the process, the AUX remains low level. After the process completed, the AUX outputs highlevel and starts to work as per the operating mode combined by M1 and M0. Therefore, users need to wait the AUX rising edgeas the start of module’s normal work.
Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manualCopyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.105.6 AUX descriptionAUX Pin can be used as indication for wireless send & receive buffer and self-check.It can indicate whether there are data that are not sent yet via wireless way, or whether all wireless data has been sentthrough UART, or whether the module is still in the process of self-check initialization.5.6.1 Indication of UART outputTo wake up external MCU5.6.2 Indication of wireless transmittingBuffer (empty): the internal 1000 bytes data in the buffer are written to the RFIC (Auto sub-packaging). When AUX=1, theuser can input data less than 1000 bytes continuously without overflow. Buffer (not empty): when AUX=0, the internal 1000bytes data in the buffer have not been written to the RFIC completely. If the user starts to transmit data at this circumstance, itmay cause overtime when the module is waiting for the user data, or transmitting wireless sub package.When AUX = 1, it doesnot mean that all the UART data of the module have been transmitted already, perhaps the last packet of data is still intransmission.
Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manualCopyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.115.6.3 Configuration procedure of moduleOnly happened when power-on resetting or exiting sleep mode5.6.4 Notes for AUXNo.Description1For function 1 & function 2 mentioned above, the priority should be given to the one with low level output, which meansif it meets each of any low level output condition, AUX outputs low level, if none of the low level condition is met, AUXoutputs high level.2When AUX outputs low level, it means the module is busy & cannot conduct operating mode checking. Within 1ms sinceAUX outputs high level, the mode switch will be completed.3After switching to new operating mode, it will not work in the new mode immediately until AUX rising edge lasts for 2ms .If AUX stays on the high level, the operating mode switch can be effected immediately.4When the user switches to other operating modes from mode 3 (sleep mode) or it’s still in reset process, the module willreset user parameters, during which AUX outputs low level.6. Operating modeThere are four operating modes, which are set by M1 and M0, the details are as follows:Mode(0-3)M1M0DescriptionRemark0 Normal mode00UART and wireless channel are open, transparenttransmission is onSupports configuration over air viaspecial command1 WOR mode01Can be defined as WOR transmitter and WOR receiverSupports wake up over air2 Configurationmode10Users can access the register through the serial port tocontrol the working state of the module3 Deep sleep mode11Sleep mode
Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manualCopyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.126.1 Mode switchingNo.Remark1Users can combine M1 and M0 with high and low levels to determine the operating mode. Two GPIOs of theMCU can be used to control mode switching;After changing M1 and M0: If the module is idle, after 1ms, it can start working according to the new mode;If the serial port data of the module has not been transmitted through the wireless, the new working mode canbe switched after the transmission is completed;If the module receives the wireless data and transmits the data through the serial port, it needs to finishtransmission before switching the new working mode;Therefore, mode switching can only be valid when AUX output is 1, otherwise it will delay switching.2For example, users continuously inputs a large amount of data and simultaneously performs mode switching. Atthis time, the switching mode operation is invalid; the module will process all the user data before performing thenew mode detection;Therefore, the general recommendation is to detect the output state of the AUX pin and switch after 2ms whenthe output is high.3When the module is switched from other modes to sleep mode, if the data has not been processed yet;The module will process these data (including receiving and sending) before entering sleep mode. This featurecan be used for fast sleep, which saves power; for example, the transmitter module works in mode 0, the usertransmits the serial port data "12345", and then does not have to wait for the AUX pin to be idle (high level), andcan directly switch to sleep mode. And the user's main MCU immediately sleeps, the module will automaticallytransmit the user data through the wireless, and automatically enters sleep within 1ms;This saves MCU's working time and reduces power consumption.4Similarly, any mode switching can use this feature. After the module processes the current mode event, it willautomatically enter the new mode within 1ms; thus eliminating the need for the user to query AUX and achievethe purpose of fast switching;For example, switching from the transmit mode to the receive mode; the user MCU can also enter sleep beforethe mode switch, and use the external interrupt function to acquire the AUX change, thereby performing modeswitching.5This operation mode is very flexible and efficient, and is designed according to the user's MCU's operationconvenience, and can reduce the workload of the entire system as much as possible, improve system efficiency,and reduce power consumption.6.2 Normal mode（Mode 0）TypeM0 = 0，M1 = 0TransmittingUsers can input data through the serial port and the module will start wireless transmission.ReceivingThe module wireless receiving function is turned on, and after receiving the wireless data, it will be output through theserial port TXD pin.
Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manualCopyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.136.3 WOR mode（Mode 1）TypeM0 = 1，M1 =0TransmittingWhen defined as a transmitting party, a preamble is automatically added before transmitting.ReceivingIt can receive data normally, the receiving function is the same as mode 0.6.4 Configuration mode（Mode 2）TypeM0 = 0，M1 = 1TransmittingWireless transmitting offReceivingWireless receiving offConfigurationUsers can access the registers to configure the module's operation state.6.5 Deep sleep mode（Mode 3）TypeM0 = 1，M1 = 1TransmittingUnable to transmit wireless dataReceivingUnable to receive wireless dataNoteWhen from the sleep mode to other modes, the module will reconfigure the parameters. During the configurationprocess, AUX will remain low; After configuration,it outputs high level, we suggest that user test rising edge T_BUSY.7. Register read and write control7.1 Command formatIn configuration mode (mode 2: M1 = 1, M0 = 0), the list of supported commands are as follows (only 9600, 8N1 format issupported when)：
Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manualCopyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.14No.Command formatDescription1Set registerCommand: C0+starting address+length+parametersResponse: C1+starting address+length+parametersE.g 1: Channel is 0x09command starting address length parameterSend: C0 05 01 09Returen: C1 05 01 09E.g 2: Configure module address (0x1234), network address (0x00), serial port (9600 8N1) and air datarate (1.2K).Send: C0 00 04 12 34 00 61Return: C1 00 04 12 34 00 612Read registerCommand: C1+starting address+parametersResponse: C1+starting address+length+parametersE.g 1：Read channelcommand starting address length parameterSend: C1 05 01Returen: C1 05 01 09E.g 2: Read module address, network address, serial port and air data rate.Send: C1 00 04Return: C1 00 04 12 34 00 613Set temporaryregistersCommand: C2+starting address+parametersResponse: C1+starting address+length+parametersE.g 1: Channel is 0x09command starting address length parameterSend: C2 05 01 09Returen: C1 05 01 09E.g 2: Configure module address (0x1234), network address (0x00), serial port (9600 8N1) and air datarate (1.2K).Send: C2 00 04 12 34 00 61Return: C1 00 04 12 34 00 615WirelessconfigurationCommand: CF CF + normal commandRespond：CF CF + normal respondE.g 1: Channel is 0x09Command head command starting address length parameterSend: CF CF C0 05 01 09Returen: CF CF C1 05 01 09E.g 2: Configure module address (0x1234), network address (0x00), serial port (9600 8N1) and air datarate (1.2K).Send: CF CF C2 00 04 12 34 00 61Return: CF CF C1 00 04 12 34 00 616Wrong formatWrong format respond: FF FF FF
Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manualCopyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.157.2 Register descriptionAddressRead orwriteNameDescriptionRemark00HRead/WriteADDHADDH（default 0）The module address is high byte and low byte.Note: When the module address is FFFF, it can beused as the broadcast and monitor address, thatis the module will not perform address filtering.01HRead/WriteADDLADDL（default 0）02HRead/WriteNETIDNETID（default 0）Network address, used to distinguish the network.When communicating with each other, theyshould be set to the same.03HRead/WriteREG07，6，5 UART: Serial port rate（bps）000: 1200001: 2400010: 4800011: 9600（default）100: 19200101: 38400110: 57600111: 115200---------------------------------------4，3： Serial parity bit00：8N1（default）01：8O110：8E111：8N1（equal to 00）-----------------------------------2，1，0，air data rate000: 0.3k001: 1.2k010: 2.4k（default）011: 4.8k100: 9.6k101: 19.2k110: 38.4k111: 62.5kFor the two modules that communicate with eachother, the serial port baud rate can be different,and the verification method can also be different.When transmitting large packets continuously,users need to consider the data blocking causedby the same baud rate, and data may even belost. It is generally recommended that bothparties have the same baud rate.---------------------------------------Both parties must be the sameThe higher the rate, the shorter the distance04HRead/WriteREG17，6： Sub packet setting00: 240 bytes（default）01: 128 bytes10: 64 bytes11: 32 bytes--------------------------------------5 ：RSSI Ambient noise enable1: Enable0: Disable（default）--------------------------------------4，3，2 Reserve--------------------------------------1，0： Transmitting powerWhen the data is smaller than the sub packetlength, the serial output of the receiving end is anuninterrupted continuous output.When the data is larger than the sub packetlength, the receiving end serial port will outputthe sub packet.--------------------------------------------When enabled, the C0 C1 C2 C3 command can besent in the transmitting mode or WOR
Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manualCopyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.1600：22dbm（default）01：17dbm10：13dbm11：10dbmtransmitting mode to read the register.Register 0x00: Current ambient noise rssiRegister 0X01: rssi when the data was received lasttime.（Current channel noise is: dBm =-RSSI/2）Command format: C0 C1 C2 C3 + starting address+ read lengthReturns: C1 + address address + read length + readvalid valueE.g: send C0 C1 C2 C3 00 01Return C1 00 01 rssi----------------------------------Power and current are nonlinear, and powerefficiency is highest at maximum power.The current does not decrease in proportion tothe decrease in power.05HRead/WriteREG2Channel control（CH）0-80 represents a total of 81 channelsFrequency= 850.125 + CH *1M06HRead/WriteREG37 Enable RSSI1：Enable0：Disable（default）--------------------------------------6， Fixed point transmission1：Fixed point transmission mode0 ： Transparent transmission mode（default）---------------------------------------5 Enable reply1：Enable repeater function0：Disable repeater function--------------------------------------4 LBT enable byte (monitor beforetransmission)1：Enable0：Disable（default）--------------------------------------3 WOR transceiver control1：WOR transmitterThe module receiving andtransmitting functions are turned on, and awake-up code is added when transmittingdata. Receiving is turned on.0：WOR receiver（default）The module is unable to transmitdata and works in WOR monitoring mode. Themonitoring period is as follows (WOR cycle),which can save a lot of power.---------------------------------------2，1，0，WOR cycle000：500msWhen enabled, the module receives wireless dataand it will follow an RSSI strength byte afteroutput via the serial port TXD.---------------------------------------The module recognizes the first three bytes of theserial data as: address high + address low +channel and takes it as the wireless transmittingtarget.---------------------------------------After the reply function is enabled, if the targetaddress is not the module itself, the module willforward it once.In order to prevent data return-back, it isrecommended to use it in conjunction with thefixed point mode. That is: the target address isdifferent from the source address.----------------------------------------When enabled, wireless data will be monitoredbefore it is transmitted, which can avoidinterference to a certain extent, but may causedata delay.----------------------------------------Valid only for mode 1.After the WOR receiver receives the wireless dataand outputs it through the serial port, it will waitfor 1000ms before entering the WOR again. Userscan input the serial port data and return it via thewireless during this period. Each serial byte will berefreshed for 1000ms. Users must transmit thefirst byte within 1000ms.---------------------------------------------Valid only for mode 1.Period T = (1 + WOR) * 500ms, maximum4000ms, minimum 500msThe longer the WOR monitoring interval period,the lower the average power consumption, but
Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manualCopyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.17001：1000ms010：1500ms011：2000ms（default）100：2500ms101：3000ms110：3500ms111：4000msthe greater the data delayBoth the transmitter and the receiver must be thesame (very important).07HWriteCRYPT_HKey high byte (default 0）Write only, read returns 0Used for user encryption to avoid interceptingairborne wireless data by similar modules.The module will internally use these two bytes asa calculation factor to transform and encrypt theover-the-air wireless signal.08HWriteCRYPT_LKey low byte (default 0)80H~86HReadonlyPIDProduct information 7 bytesProduct information 7 bytes7.3 Factory default parameterFactory default parameters：62 00 00 00 00 00Model No.FrequencyAddressChannelAir data rateBaud rateParity formatPowerE22-900T22S900.125MHz0x00000x322.4kbps96008N122dbm8. Repeater networking modeNo.Description1After setting the repeater mode by configuration, switch to the normal mode and the repeater starts working.2In the repeater mode, ADDH, ADDL are no longer used as the module address, but is correspondingly paired with theNETID. If the data of one of the networks is received, it is forwarded to another network. The network ID of the repeateritself is invalid.3In repeater mode, the repeater module cannot transmit and receive data, and cannot perform low-power operation.4The user enters the other mode from mode 3 (sleep mode) or during the reset process, the module resets the userparameters during which the AUX outputs low level.Repeater networking rules:1. Forwarding rules, the repeater can forward data in both directions between two NETIDs.2. In repeater mode, ADDH\ADDL is no longer used as the module address, and it is used as a NETID forwarding pairing flag.Figure:1Primary repeater
Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manualCopyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.18“Node 1” NETID is 08.“Node 2” NETID is 33.Primary repeater 1‘s ’ADDH\ADDL are 08，33.So the signal sent by node 1 (08) can be forwarded to node 2 (33)At the same time, node 1 and node 2 have the same address, so the data transmitted by node 1 can be received by node 2.② Secondary repeaterSecondary repeater’s ADDH\ADDL are 33，05.Therefore, Repeater 2 can forward the data of Repeater 1 to the network NETID: 05.Thus node 3 and node 4 can receive node 1 data. Node 4 outputs data normally, and node 3 has a different address than node1, so no data is output.3Two-way repeaterAs shown in the figure: the data sent by node 1, the nodes 2, 4 can receive the data sent by node 2, 4, and node 1 can alsoreceive it.9. Configuration instructions on computerThe following figure shows the E22-900T22S configuration host computer display interface, the user can switch to thecommand mode through M0M1, and quickly configure and read the parameters on computer.
Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manualCopyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.19In the configuration on computer, the module address, frequency channel, network ID, and key are all in decimal mode.The range of values of each parameter is:Network address: 0-65535Frequency channel: 0-80Network ID: 0-255Key: 0-65535When the user configures the repeater mode using the host computer, special attention must be paid. Since theparameters are in decimal mode in the host computer, the module address and network ID need to be converted intohexadecimal. For example, if the network ID input by the transmitting end A is 02, and the network ID input by thereceiving end B is 10, when the repeater end R sets the module address, the hexadecimal value 0X020A is converted intothe decimal value 522 as the repeater end R. Module address. That is, the module address value of the repeater terminalR is 522 at this time.10. Hardware designIt is recommended to use a DC stabilized power supply. The power supply ripple factor is as small as possible,and the module needs to be reliably grounded.;Please pay attention to the correct connection of the positive and negative poles of the power supply.Reverse connection may cause permanent damage to the module;Please check the power supply to ensure it is within the recommended voltage otherwise when it exceeds themaximum value the module will be permanently damaged;Please check the stability of the power supply, the voltage can not be fluctuated frequently;When designing the power supply circuit for the module, it is often recommended to reserve more than 30%of the margin, so the whole machine is beneficial for long-term stable operation.;
Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manualCopyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.20The module should be as far away as possible from the power supply, transformers, high-frequency wiringand other parts with large electromagnetic interference.;High-frequency digital routing, high-frequency analog routing, and power routing must be avoided underthe module. If it is necessary to pass through the module, assume that the module is soldered to the TopLayer, and the copper is spread on the Top Layer of the module contact part(well grounded), it must be closeto the digital part of the module and routed in the Bottom Layer;Assuming the module is soldered or placed over the Top Layer, it is wrong to randomly route over theBottom Layer or other layers, which will affect the module's spurs and receiving sensitivity to varying degrees;It is assumed that there are devices with large electromagnetic interference around the module that willgreatly affect the performance. It is recommended to keep them away from the module according to thestrength of the interference. If necessary, appropriate isolation and shielding can be done;Assume that there are traces with large electromagnetic interference (high-frequency digital, high-frequencyanalog, power traces) around the module that will greatly affect the performance of the module. It isrecommended to stay away from the module according to the strength of the interference.If necessary,appropriate isolation and shielding can be done.If the communication line uses a 5V level, a 1k-5.1k resistor must be connected in series (not recommended,there is still a risk of damage);Try to stay away from some physical layers such as TTL protocol at 2.4GHz , for example: USB3.0;The mounting structure of antenna has a great influence on the performance of the module. It is necessary toensure that the antenna is exposed, preferably vertically upward. When the module is mounted inside thecase, use a good antenna extension cable to extend the antenna to the outside;The antenna must not be installed inside the metal case, which will cause the transmission distance to begreatly weakened.11. FAQ11.1 Communication range is too shortThe communication distance will be affected when obstacle exists.Data lose rate will be affected by temperature, humidity and co-channel interference.The ground will absorb and reflect wireless radio wave, so the performance will be poor when testing near ground.Sea water has great ability in absorbing wireless radio wave, so performance will be poor when testing near the sea.The signal will be affected when the antenna is near metal object or put in a metal case.Power register was set incorrectly, air data rate is set as too high (the higher the air data rate, the shorter the distance).The power supply low voltage under room temperature is lower than 2.5V, the lower the voltage, the lower thetransmitting power.Due to antenna quality or poor matching between antenna and module.11.2 Module is easy to damagePlease check the power supply source, ensure it is 2.0V~3.6V, voltage higher than 3.6V will damage the module.
Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manualCopyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.21Please check the stability of power source, the voltage cannot fluctuate too much.Please make sure antistatic measure are taken when installing and using, high frequency devices have electrostaticsusceptibility.Please ensure the humidity is within limited range, some parts are sensitive to humidity.Please avoid using modules under too high or too low temperature.11.3 BER(Bit Error Rate) is highThere are co-channel signal interference nearby, please be away from interference sources or modifyfrequency and channel to avoid interference;Poor power supply may cause messy code. Make sure that the power supply is reliable.The extension line and feeder quality are poor or too long, so the bit error rate is high;12. Production guidance12.1 Reflow soldering temperatureProfile FeatureCurve characteristicsSn-Pb AssemblyPb-Free AssemblySolder PasteSolder pasteSn63/Pb37Sn96.5/Ag3/Cu0.5Preheat Temperature min （Tsmin）Min preheating temp.100℃150℃Preheat temperature max (Tsmax)Mx preheating temp.150℃200℃Preheat Time (Tsmin to Tsmax)(ts)Preheating time60-120 sec60-120 secAverage ramp-up rate(Tsmax to Tp)Average ramp-up rate3℃/second max3℃/second maxLiquidous Temperature (TL)Liquid phase temp.183℃217℃Time（tL）Maintained Above（TL）Time below liquid phase line60-90 sec30-90 secPeak temperature（Tp）Peak temp.220-235℃230-250℃Aveage ramp-down rate（Tp to Tsmax）Aveage ramp-down rate6℃/second max6℃/second maxTime 25℃ to peak temperatureTime to peak temperature for25℃max 6 minutesmax 8 minutes
Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manualCopyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.2212.2 Reflow soldering curve13. E22 seriesModel No.Core ICFrequencyHzTx powerdBmDistancekmPackageSizemmAntennaE22-900T22SSX1262915M 22.625SMD16*26IPEX/Stamp holeE22-230T22SSX1262230M225SMD16*26IPEX/Stamp holeE22-400T22SSX1268430M 470M225SMD16*26IPEX/Stamp holeE22-400M30SSX1268433M 470M3012SMD24*38.5IPEX/Stamp holeE22-900M30SSX1262868M 915M3012SMD24*38.5IPEX/Stamp holeE22-900M22SSX1262868M 915M226.5SMD14*20IPEX/Stamp holeE22-400M22SSX1268433M 470M226.5SMD14*20IPEX/Stamp hole
Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manualCopyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.2314. Antenna recommendationThe antenna is an important role in the communication process. A good antenna can largely improve the communication system. 15. Package for batch order
Chengdu Ebyte Electronic Technology Co., Ltd. E22-900T22S User manualCopyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.24Revision historyVersionDateDescriptionIssued by1.002018-01-08Initial versionhuaa1.102018-04-16Content updatedhuaa1.202018-05-24Content updatedHuaa1.212018-07-20Model name revisedHuaa1.302018-10-23Model No. splitHuaaAbout usTechnical support: support@cdebyte.comDocuments and RF Setting download link: www.ebyte.comThank you for using Ebyte products! Please contact us with any questions or suggestions: info@cdebyte.com------------------------------------------------------------------------------------------------------------Fax: 028-64146160 ext. 821Web: www.ebyte.comAddress: Innovation Center D347, 4# XI-XIN Road,Chengdu, Sichuan, China
FCC Statement This 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 interference received, including interference that may cause undesired operation. Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. FCC Radiation Exposure Statement This modular complies with FCC RF radiation exposure limits set forth for an uncontrolled environment. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. This modular must be installed and operated with a minimum distance of 20 cm between the radiator and user body. If the FCC identification number is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. This exterior label can use wording such as the following: “Contains Transmitter Module FCC ID: 2ALPH-E22900T22S Or Contains FCC ID: 2ALPH-E22900T22S ” When the module is installed inside another device, the user manual of the host must contain below warning statements; 1. This 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. (2) This device must accept any interference received, including interference that may cause undesired operation. 2. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. The devices must be installed and used in strict accordance with the manufacturer's instructions as described in the user documentation that comes with the product. IP EX antenna port dont connect to all circuit and permanent disable function in device with FCC ID: 2ALPH-E22900T22S

Navigation menu