E32_Usermanual_EN_v1.30 E32 Series Manual V1.30
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SX1276/SX1278 Wireless Module E32 Series User M User Manual This manual may be modified based on product upgrade, please refer to the latest version. All rights to interpret and modify this manual belong to Chengdu Ebyte Electronic Technology Co., Ltd. Version Date Description Issued by 1.00 2017/11/10 Initial version huaa 1.10 2018/01/11 Added E32 (868T30S)/E32 (915T30S) huaa 1.20 2018/01/15 Added E32 (868T20S)/E32 (915T20S)/E32 (400T20S) huaa 1.30 2018/01/22 Added E32 (868T20D)/E32 (868T30D)/E32 (915T20D)/E32 (915T30D)/E32 (170T30D) huaa SX1276/SX1278 Wireless Modules E32 Series User Manual Brief Introduction E32 series are UART wireless modules based on SX1276/SX1278 RF IC of SEMTECH with transparent transmission and LoRa spread spectrum technology. The modules 3.3V TTL output. SX1276/SX1278 support LoRaTM technology, The LoRaTM DSSS (direct sequence spread spectrum) technology features long range and strong anti-interference as well as strong data confidentiality. SX1276/SX1278 are considered as a milestone in terms of low speed data communication. The modules of 30dBm transmitting power are embedded with power amplifier (PA) and low noise amplifier (LNA), which enhances the stability and longer communication range; the modules of 20dBm transmitting power adopt industrial grade crystal oscillators to ensure the stability and consistency, its precision is lower than the widely adopted 10ppm. E32 series are in stable bulk production and are widely applied in utility meters, IoT renovation, smart home, etc. The modules feature data encryption and compression. The data transmitted in air features randomness. The encryption-decryption algorithm makes data interception meaningless. And the data compression enables shorter transmitting time and lower rate of being interfered, which increased the reliability and transmitting efficiency. E32 series strictly follow FCC, CE, CCC and such design standards and meet various RF certification requirements for exporting. Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. 1 SX1276/SX1278 Wireless Modules E32 Series User Manual Model Frequency TX Power Range Packing Antenna E32 (433T20DC) 433M 20dBm 3000m DIP SMA-K E32 (433T20S) 433M 20dBm 3000m SMD Spring E32 (433T20S2T) 433M 20dBm 3000m SMD IPEX/Spring E32 (433T27D) 433M 27dBm 5000m DIP SMA-K E32 (433T30D) 433M 30dBm 8000m DIP SMA-K E32 (433T30S) 433M 30dBm 8000m SMD IPEX/Spring E32 (868T20D) 868M 20dBm 3000m DIP SMA-K E32 (868T20S) 868M 20dBm 3000m SMD IPEX/Spring E32 (868T30D) 868M 30dBm 8000m DIP SMA-K E32 (868T30S) 868M 30dBm 8000m SMD IPEX/Spring E32 (915T20D) 915M 20dBm 3000m DIP SMA-K E32 (915T20S) 915M 20dBm 3000m SMD IPEX/Spring E32 (915T30D) 915M 30dBm 8000m DIP SMA-K E32 (915T30S) 915M 30dBm 8000m SMD IPEX/Spring E32 (170T30D) 170M 30dBm 8000m DIP SMA-K E32 (400T20S) 470M 20dBm 3000m SMD IPEX/Spring Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. 2 SX1276/SX1278 Wireless Modules E32 Series User Manual Contents CONTENTS ...................................................................................................................................................................................... 3 1. FEATURES ............................................................................................................................................................................. 5 2. TECHNICAL PARAMETERS ............................................................................................................................................. 6 2.1. GENERAL PARAMETERS...................................................................................................................................................... 6 2.2. ELECTRICAL PARAMETERS ................................................................................................................................................ 7 2.2.1. Transmitting current ...................................................................................................................................................... 7 2.2.2. Receiving current........................................................................................................................................................... 7 2.2.3. Turn-off current ............................................................................................................................................................. 8 2.2.4. Voltage supply................................................................................................................................................................ 8 2.2.5. Communication level ..................................................................................................................................................... 9 2.3. RF PARAMETERS ............................................................................................................................................................... 9 2.3.1. Transmitting power........................................................................................................................................................ 9 2.3.2. Receiving sensitivity .................................................................................................................................................... 10 2.3.3. 2.4. 3. Recommended working frequency ............................................................................................................................... 10 TESTED RANGE ................................................................................................................................................................ 11 MECHANICAL CHARACTERISTICS ............................................................................................................................ 12 3.1. E32 (433T20DC)/ E32 (915T20D)/ E32 (868T20D) ....................................................................................................... 12 3.1.1. Dimension .................................................................................................................................................................... 12 3.1.2. Pin definitions.............................................................................................................................................................. 12 3.2. E32 (433T20S) ................................................................................................................................................................ 13 3.2.1. Dimension .................................................................................................................................................................... 13 3.2.2. Pin definitions.............................................................................................................................................................. 13 3.3. E32 (433T20S2T)............................................................................................................................................................ 14 3.3.1. Dimension .................................................................................................................................................................... 14 3.3.2. Pin definitions.............................................................................................................................................................. 14 3.4. E32（433T27D）/ E32-TTL-1W（433T30D）/ E32 (915T30D)/ E32 (868T30D)/ E32 (170T30D) ........................... 15 3.4.1. Dimension .................................................................................................................................................................... 15 3.4.2. Pin definitions.............................................................................................................................................................. 15 3.5. E32 (433T30S)/ E32 (868T30S)/ E32 (915T30S) ........................................................................................................... 16 3.5.1. Dimension .................................................................................................................................................................... 16 3.5.2. Pin definitions.............................................................................................................................................................. 16 3.6. E32 (400T20S)/ E32 (868T20S)/ E32 (915T20S) ........................................................................................................... 17 3.6.1. Dimension .................................................................................................................................................................... 17 3.6.2. Pin definitions.............................................................................................................................................................. 17 4. RECOMMENDED CIRCUIT DIAGRAM ........................................................................................................................ 18 5. FUNCTION DESCRIPTION .............................................................................................................................................. 18 6. 5.1. FIXED MODE .................................................................................................................................................................... 18 5.2. BROADCAST MODE........................................................................................................................................................... 19 5.3. BROADCAST ADDRESS...................................................................................................................................................... 19 5.4. MONITORING ADDRESS .................................................................................................................................................... 19 5.5. MODULE RESET................................................................................................................................................................ 19 5.6. AUX DESCRIPTION .......................................................................................................................................................... 19 5.6.1. Indication of UART output .......................................................................................................................................... 19 5.6.2. Indication of wireless transmission ............................................................................................................................. 20 5.6.3. Module in configuration process ................................................................................................................................. 20 5.6.4. Notes for AUX.............................................................................................................................................................. 20 OPERATION MODE .......................................................................................................................................................... 21 Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. 3 SX1276/SX1278 Wireless Modules E32 Series User Manual 6.1. MODE SWITCH ................................................................................................................................................................. 21 6.2. NORMAL MODE (MODE 0) ................................................................................................................................................ 22 6.3. WAKE-UP MODE (MODE 1) ............................................................................................................................................... 22 6.4. POWER-SAVING MODE (MODE 2) ...................................................................................................................................... 22 6.5. SLEEP MODE (MODE 3) ..................................................................................................................................................... 23 7. COMMAND FORMAT ....................................................................................................................................................... 23 7.1. DEFAULT PARAMETERS .................................................................................................................................................... 23 7.1.1. Operating frequency 433MHz: .................................................................................................................................... 23 7.1.2. Operating frequency 470MHz: .................................................................................................................................... 24 7.1.3. Operating frequency 868MHz: .................................................................................................................................... 24 7.1.4. Operating frequency 915MHz: .................................................................................................................................... 24 7.1.5. Operating frequency 915MHz: .................................................................................................................................... 25 7.2. READING OPERATING PARAMETERS.................................................................................................................................. 25 7.3. READING VERSION NUMBER ............................................................................................................................................. 25 7.4. RESET COMMAND ............................................................................................................................................................ 25 7.5. PARAMETER SETTING COMMAND ..................................................................................................................................... 26 8. PARAMETER SETTING .................................................................................................................................................... 28 9. PRODUCTION GUIDANCE .............................................................................................................................................. 29 9.1. REFLOW SOLDERING TEMPERATURE................................................................................................................................. 29 9.2. REFLOW SOLDERING CURVE ............................................................................................................................................. 29 10. FAQ ....................................................................................................................................................................................... 30 10.1. COMMUNICATION RANGE IS TOO SHORT ........................................................................................................................... 30 10.2. MODULE IS EASY TO DAMAGE .......................................................................................................................................... 30 11. IMPORTANT DECLARATIONS ....................................................................................................................................... 30 12. ABOUT US ........................................................................................................................................................................... 30 Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. 4 SX1276/SX1278 Wireless Modules E32 Series User Manual 1. Features ⚫ LoRa: The LoRa spread-spectrum means the transmitting distance is much longer than before. Confidentiality is high and the possibility of being intercepted is extremely low Strong ability of anti-interference, which has a strong inhibitory capacity for the Co-Channel Interference and all kinds of noises, and with excellent performance of anti-multipath fading ⚫ Ultra-low power consumption: It supports WOR to reduce overall power consumption. In power-saving mode(Mode 2), it can regulate overall power consumption by setting receiving response delay; The maximum receiving response delay can be configured as 2000ms， and the average current is about 30uA. ⚫ Fixed transmission: Module can communicate with other modules which work in different channels and addresses, it is easy for networking and repeater. For example: module A transmits AA BB CC to module B (address: 0x00 01, channel: 0x80), HEX format is 00 01 80 AA BB CC (00 01 refers to the address of module B, 80 refers to the channel of module B), then module B receives AA BB CC (only module B). ⚫ Broadcast transmission: Set the module address as 0xFFFF, then the module can communicate with other modules in same channel. ⚫ FEC: Forward Error Correction, high coding efficiency & good correction performance. In the case of sudden interference, it can correct the interfered data packets proactively, so that the reliability & transmission range are improved correspondingly. Without FEC, those data packets can only be dropped. ⚫ Sleep mode: When the module works in sleep mode (mode 3), transmitting & receiving is not available, while the configuration is available. The typical current is 6.0uA in this mode. ⚫ Watchdog: Module with a built-in watchdog, layout and precise time, once an exception occurs, the module will restart in 0.107 seconds, and will continue to work on the previous parameter Settings. ⚫ Parameter saving: The parameters will be saved after setting and won’t be lost when powers-off. After power-up again, modules work as the previous parameters. ⚫ Meter reading: E32 (400T20S) is optimized specifically for meter reading data logging, it supports super wide operating frequency with corresponding antenna, it also supports 197-Byte large data packet transmission. Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. 5 SX1276/SX1278 Wireless Modules E32 Series User Manual 2. Technical parameters 2.1. General parameters Operating Operating Storage temperature humidity temperature 6.7±0.1g -40 ~ 85℃ 10% ~ 90% -40 ~ 125°C 17*25.5mm 1.6±0.1g -40 ~ 85℃ 10% ~ 90% -40 ~ 125°C SX1278 17 * 30 mm 1.6±0.1g -40 ~ 85℃ 10% ~ 90% -40 ~ 125°C E32 (433T27D) SX1278 24 * 43 mm 8.2±0.1g -40 ~ 85℃ 10% ~ 90% -40 ~ 125°C E32-TTL-1W (433T30D) SX1278 24 * 43 mm 8.2±0.1g -40 ~ 85℃ 10% ~ 90% -40 ~ 125°C E32 (433T30S) SX1278 25*40.5mm 5.2±0.1g -40 ~ 85℃ 10% ~ 90% -40 ~ 125°C E32 (868T20D) SX1276 21 * 36 mm 6.7±0.1g -40 ~ 85℃ 10% ~ 90% -40 ~ 125°C E32 (868T20S) SX1276 16 * 26mm 2.1±0.1g -40 ~ 85℃ 10% ~ 90% -40 ~ 125°C E32 (868T30D) SX1276 24 * 43 mm 8.2±0.1g -40 ~ 85℃ 10% ~ 90% -40 ~ 125°C E32 (868T30S) SX1276 25*40.5mm 5.3±0.1g -40 ~ 85℃ 10% ~ 90% -40 ~ 125°C E32 (915T20D) SX1276 21 * 36 mm 6.7±0.1g -40 ~ 85℃ 10% ~ 90% -40 ~ 125°C E32 (915T20S) SX1276 16 * 26mm 2.1±0.1g -40 ~ 85℃ 10% ~ 90% -40 ~ 125°C E32 (915T30D) SX1276 24 * 43 mm 8.2±0.1g -40 ~ 85℃ 10% ~ 90% -40 ~ 125°C E32 (915T30S) SX1276 25*40.5mm 5.3±0.1g -40 ~ 85℃ 10% ~ 90% -40 ~ 125°C E32 (170T30D) SX1278 24 * 43 mm 8.2±0.1g -40 ~ 85℃ 10% ~ 90% -40 ~ 125°C E32 (400T20S) SX1278 16 * 26mm 2.0±0.1g -40 ~ 85℃ 10% ~ 90% -40 ~ 125°C Model Core IC Size Net weight E32-TTL-100 (433T20DC) SX1278 21 * 36 mm E32 (433T20S) SX1278 E32 (433T20S2T) Model Channel (DEC) Default Module Chanel Address (DEC) (DEC) Air Data Rate (kbps) Buffer (Byte) SubPacket (Byte) E32 (433T20DC) 32 23 65535 Can be configured to 0.3, 1.2, 2.4 (default), 4.8, 9.6, 19.2 512 58 E32 (433T20S) 32 23 65535 Can be configured to 0.3, 1.2, 2.4 (default), 4.8, 9.6, 19.2 512 58 E32 (433T20S2T) 32 23 65535 Can be configured to 0.3, 1.2, 2.4 (default), 4.8, 9.6, 19.2 512 58 E32 (433T27D) 32 23 65535 Can be configured to 0.3, 1.2, 2.4 (default), 4.8, 9.6, 19.2 512 58 E32 (433T30D) 32 23 65535 Can be configured to 0.3, 1.2, 2.4 (default), 4.8, 9.6, 19.2 512 58 E32 (433T30S) 32 23 65535 Can be configured to 0.3, 1.2, 2.4 (default), 4.8, 9.6, 19.2 512 58 E32 (868T20D) 32 6 65536 Can be configured to 0.3, 1.2, 2.4 (default), 4.8, 9.6, 19.2 512 58 E32 (868T20S) 32 6 65535 Can be configured to 0.3, 1.2, 2.4 (default), 4.8, 9.6, 19.2 512 58 E32 (868T30D) 32 6 65536 Can be configured to 0.3, 1.2, 2.4 (default), 4.8, 9.6, 19.2 512 58 E32 (868T30S) 32 6 65535 Can be configured to 0.3, 1.2, 2.4 (default), 4.8, 9.6, 19.2 512 58 E32 (915T20D) 32 15 65536 Can be configured to 0.3, 1.2, 2.4 (default), 4.8, 9.6, 19.2 512 58 E32 (915T20S) 32 15 65535 Can be configured to 0.3, 1.2, 2.4 (default), 4.8, 9.6, 19.2 512 58 E32 (915T30D) 32 15 65536 Can be configured to 0.3, 1.2, 2.4 (default), 4.8, 9.6, 19.2 512 58 E32 (915T30S) 32 15 65535 Can be configured to 0.3, 1.2, 2.4 (default), 4.8, 9.6, 19.2 512 58 E32 (170T30D) 55 40 65535 Can be configured to 0.3, 0.6, 1.2, 2.4 (default), 4.8, 9.6 512 58 E32 (400T20S) 116 60 65536 Can be configured to 0.3, 1.2, 2.4 (default), 4.8, 9.6, 19.2 512 197 Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. 6 SX1276/SX1278 Wireless Modules 2.2. Electrical Parameters 2.2.1. Transmitting current E32 Series User Manual Model Min Typ Max Unit E32 (433T20DC) 100 110 120 mA E32 (433T20S) 100 110 120 mA E32 (433T20S2T) 100 110 120 mA E32 (433T27D) 390 410 450 mA E32 (433T30D) 570 610 670 mA E32 (433T30S) 520 550 610 mA E32 (868T20D) 110 120 130 mA E32 (868T20S) 105 118 130 mA E32 (868T30D) 630 680 750 mA and module may affect the transmitting current value E32 (868T30S) 560 600 660 mA at different levels. E32 (915T20D) 110 120 130 mA E32 (915T20S) 105 118 130 mA E32 (915T30D) 650 700 770 mA E32 (915T30S) 560 600 660 mA E32 (170T30D) 630 680 750 mA E32 (400T20S) 96 106 116 mA 2.2.2. Remarks ⚫ When designing current supply circuit, 30% margin is recommended to be remained so as to ensure longterm stable operation of the whole module; ⚫ The current at the instant of transmitting may be high, but the total energy consumed may be lower due to very short transmitting time; ⚫ When using external antenna, the impedance matching degree at different frequency points between antenna Receiving current Model Min Typ Max Unit E32 (433T20DC) 13 14 15 mA E32 (433T20S) 13 14 15 mA E32 (433T20S2T) 13 14 15 mA E32 (433T27D) 19 20 22 mA E32 (433T30D) 19 20 22 mA E32 (433T30S) 22 23 25 mA E32 (868T20D) 13 14 15 mA E32 (868T20S) 13 14 15 mA E32 (868T30D) 24 25 26 mA E32 (868T30S) 24 25 26 mA E32 (915T20D) 13 14 15 mA E32 (915T20S) 13 14 15 mA E32 (915T30D) 20 21 22 mA E32 (915T30S) 20 21 23 mA E32 (170T30D) 21 22 23 mA E32 (400T20S) 14 15 16 mA Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. Remarks ⚫ The current consumed when the RF chip is only working at receiving mode is called as receiving current，the tested receiving current may be higher for some RF chips with communication protocol or the developers have loaded their own protocol to the whole module. ⚫ The current at pure receiving mode will be mA level, the users have to realize µA level receiving current through firmware development. 7 SX1276/SX1278 Wireless Modules 2.2.3. E32 Series User Manual Turn-off current Model Min Typ Max Unit E32 (433T20DC) 3 4 5 µA E32 (433T20S) 3 4 5 µA E32 (433T20S2T) 3 4 5 µA E32 (433T27D) 4 5 6 µA when CPU, RAM, Clock and some registers remain E32 (433T30D) 4 5 6 µA operating while SoC is at very low power consumption E32 (433T30S) 4 5 6 µA status. E32 (868T20D) 3 4 5 µA E32 (868T20S) 3 4 5 µA consumed when the power supply source of the whole E32 (868T30D) 4 5 6 µA module is at no-load status. E32 (868T30S) 4 5 6 µA E32 (915T20D) 3 4 5 µA E32 (915T20S) 3 4 5 µA E32 (915T30D) 4 5 6 µA E32 (915T30S) 4 5 6 µA E32 (170T30D) 4 5 6 µA E32 (400T20S) 3 4 5 µA Model Min Typ Max Unit E32 (433T20DC) 2.3 3.3 5.2 V DC E32 (433T20S) 2.3 3.3 5.2 V DC E32 (433T20S2T) 2.3 3.3 5.2 V DC E32 (433T27D) 3.3 5.0 5.2 V DC E32 (433T30D) 3.3 5.0 5.2 V DC E32 (433T30S) 3.3 5.0 5.2 V DC E32 (868T20D) 2.3 3.3 5.2 V DC ability, but the potential pulse higher than the E32 (868T20S) 2.3 3.3 5.2 V DC maximum power supply voltage; E32 (868T30D) 3.3 5.0 5.2 V DC E32 (868T30S) 3.3 5.0 5.2 V DC E32 (915T20D) 2.3 3.3 5.2 V DC E32 (915T20S) 2.3 3.3 5.2 V DC E32 (915T30D) 3.3 5.0 5.2 V DC E32 (915T30S) 3.3 5.0 5.2 V DC E32 (170T30D) 3.3 5.0 5.2 V DC E32 (400T20S) 2.3 3.3 5.2 V DC 2.2.4. Remarks ⚫ ⚫ The turn-off current means the current consumed The turn-off current is always lower than the current Voltage supply Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. Remarks ⚫ If the voltage is at maximum value for long time, the module may be damaged; ⚫ The power supply pin has certain surge-resistance 8 SX1276/SX1278 Wireless Modules 2.2.5. E32 Series User Manual Communication level Model Min Typ Max Unit E32 (433T20DC) 2.5 3.3 3.6 V DC E32 (433T20S) 2.5 3.3 3.6 V DC E32 (433T20S2T) 2.5 3.3 3.6 V DC E32 (433T27D) 2.5 3.3 3.6 V DC E32 (433T30D) 2.5 3.3 3.6 V DC with various methods, the power consumption of the E32 (433T30S) 2.5 3.3 3.6 V DC whole module will be affected at great degree. E32 (868T20D) 2.5 3.3 3.6 V DC E32 (868T20S) 2.5 3.3 3.6 V DC microcontrollers at 5V communication level. They are E32 (868T30D) 2.5 3.3 3.6 V DC too many to be listed here. Please base on practical E32 (868T30S) 2.5 3.3 3.6 V DC test or talk to us for more information. E32 (915T20D) 2.5 3.3 3.6 V DC E32 (915T20S) 2.5 3.3 3.6 V DC E32 (915T30D) 2.5 3.3 3.6 V DC E32 (915T30S) 2.5 3.3 3.6 V DC E32 (170T30D) 2.5 3.3 3.6 V DC E32 (400T20S) 2.5 3.3 3.6 V DC 2.3. Remarks ⚫ If the communication level is higher than the allowed maximum value, the module may be damaged; ⚫ ⚫ Although the communication level can be switched Modules are compatible with some of the RF Parameters 2.3.1. Transmitting power Model Min Typ Max Unit Remarks E32 (433T20DC) 19.0 20.0 20.4 dBm E32 (433T20S) 19.0 20.0 20.4 dBm has ±0.1% error, so error accumulation will occur since E32 (433T20S2T) 19.0 20.0 20.4 dBm multiple LRC components are used in the whole RF E32 (433T27D) 26.8 27.0 28.0 dBm circuit, and the transmitting currents will be different at E32 (433T30D) 29.5 30.0 30.5 dBm different modules; E32 (433T30S) 29.5 30.0 30.5 dBm E32 (868T20D) 19.3 20.0 20.6 dBm E32 (868T20S) 19.0 20.0 20.4 dBm E32 (868T30D) 29.4 30.0 30.8 dBm E32 (868T30S) 29.5 30.0 30.5 dBm E32 (915T20D) 19.3 20.0 20.6 dBm E32 (915T20S) 19.0 20.0 20.4 dBm E32 (915T30D) 29.4 30.0 30.8 dBm E32 (915T30S) 29.5 30.0 30.5 dBm E32 (170T30D) 29.4 30.0 30.8 dBm E32 (400T20S) 19.0 20.0 20.4 dBm ⚫ Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. ⚫ Due to the error of the materials, each LRC component The power consumption can be lowered by lowering the transmitting power, but the efficiency of the internal PA will be decreased by lowering transmitting power due to various reasons; ⚫ The transmitting power will be lowered by lowering the power supply voltage. 9 SX1276/SX1278 Wireless Modules 2.3.2. Receiving sensitivity 2.3.3. E32 Series User Manual Model Typ Max Unit Remarks E32 (433T20DC) -144.0 -146.0 -147.0 E32 (433T20S) -144.0 -146.0 -147.0 E32 (433T20S2T) -144.0 -146.0 -147.0 E32 (433T27D) -145.0 -147.0 -148.0 E32 (433T30D) -145.0 -147.0 -148.0 has ±0.1% error, so error accumulation will occur since E32 (433T30S) -145.0 -147.0 -148.0 multiple LRC components are used in the whole RF E32 (868T20D) -144.0 -146.0 -147.0 E32 (868T20S) -144.0 -146.0 -147.0 E32 (868T30D) -145.0 -147.0 -148.0 communication range will be shortened while E32 (868T30S) -145.0 -147.0 -148.0 increasing the air data rate. E32 (915T20D) -144.0 -146.0 -147.0 E32 (915T20S) -144.0 -146.0 -147.0 E32 (915T30D) -145.0 -147.0 -148.0 E32 (915T30S) -145.0 -147.0 -148.0 E32 (170T30D) -145.0 -147.0 -148.0 E32 (400T20S) -144.0 -146.0 -147.0 ⚫ The sensitivity is tested under the air data rate 0.3kbps，coding rate of 4/5 and spreading factor of 12; ⚫ Due to the error of the materials, each LRC component circuit, and the transmitting currents will be different at different modules; ⚫ The receiving sensitivity will be reduced and Recommended working frequency Model Min Typ Max Unit E32 (433T20DC) 410 433 441 MHz E32 (433T20S) 410 433 441 MHz E32 (433T20S2T) 410 433 441 MHz E32 (433T27D) 410 433 441 MHz E32 (433T30D) 410 433 441 MHz E32 (433T30S) 410 433 441 MHz E32 (868T20D) 862 868 893 MHz E32 (868T20S) 862 868 893 MHz E32 (868T30D) 862 868 893 MHz E32 (868T30S) 862 868 893 MHz E32 (915T20D) 900 915 931 MHz E32 (915T20S) 900 915 931 MHz E32 (915T30D) 900 915 931 MHz E32 (915T30S) 900 915 931 MHz E32 (170T30D) 160 170 173.5 MHz E32 (400T20S) 410 470 525 MHz Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. Remarks ⚫ To work within the recommended frequency can assure the modules to meet all the parameters ⚫ To avoid the crowded integral frequency like 433.0MHz、868.0MHz、915MHz etc. is advisable. 10 SX1276/SX1278 Wireless Modules 2.4. E32 Series User Manual Tested range Model Min Typ Max Unit E32 (433T20DC) 2700 3000 3300 m E32 (433T20S) 2700 3000 3300 m E32 (433T20S2T) 2700 3000 3300 m E32 (433T27D) 4500 5000 5500 m E32 (433T30D) 7200 8000 8800 m 100 packets with 30 bytes in each packet, the range at E32 (433T30S) 7200 8000 8800 m data lose rate of lower than 5% is valid range; E32 (868T20D) 2700 3000 3300 m E32 (868T20S) 1800 2000 2200 m E32 (868T30D) 7200 8000 8800 m E32 (868T30S) 7200 8000 8800 m E32 (915T20D) 2700 3000 3300 m E32 (915T20S) 1800 2000 2200 m E32 (915T30D) 7200 8000 8800 m E32 (915T30S) 7200 8000 8800 m E32 (170T30D) 7200 8000 8800 m E32 (400T20S) 2700 3000 3300 m Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. Remarks ⚫ The external antenna used is of 5dBi gain and vertical polarization. The height is 2.5 meters; ⚫ ⚫ The interval between each data packet is 2s, sending In order to obtain meaningful and reproducible results, we conducted the tests under in clear weather with little electromagnetic interference at suburb areas； ⚫ Distance may be shorter with interference or obstacles. 11 SX1276/SX1278 Wireless Modules E32 Series User Manual 3. Mechanical Characteristics 3.1. E32 (433T20DC)/ E32 (915T20D)/ E32 (868T20D) 3.1.1. Dimension 3.1.2. Pin definitions Pin No. Pin Pin direction Input 1 M0 2 M1 3 RXD Input 4 TXD Output (weak pull-up） Input (weak pull-up） Application Work with M1 & decide the four operating modes; Floating is not allowed, can be ground. Work with M0 & decide the four operating modes; Floating is not allowed, can be ground. TTL UART inputs, connects to external TXD output pin; Can be configured as open-drain or pull-up input. TTL UART outputs, connects to external RXD input pin Can be configured as open-drain or push-pull output To wake up the external MCU, during the procedure of self-check initialization, the pin 5 AUX Output outputs low level; Can be configured as open-drain output or push-pull output; Floating is allowed. 6 VCC Input Voltage positive reference of module; Power supply 2.3V ~ 5.2V DC 7 GND Input Ground 8 Fixing hole Fixing hole 9 Fixing hole Fixing hole 10 Fixing hole Fixing hole Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. 12 SX1276/SX1278 Wireless Modules 3.2. E32 Series User Manual E32 (433T20S) 3.2.1. Dimension 3.2.2. Pin definitions Pin No. Pin Pin direction 1 M0 2 M1 3 RXD Input 4 TXD Output Input （weak pull-up） Input （weak pull-up） Application Work with M1 & decide the four operating modes. Floating is not allowed, can be ground. Work with M0 & decide the four operating modes. Floating is not allowed, can be ground. TTL UART inputs, connects to external TXD output pin. Can be configured as open-drain or pull-up input; TTL UART outputs, connects to external RXD input pin. Can be configured as open-drain or push-pull output To indicate module working status 5 AUX Output To wake up the external MCU, during the procedure of self-check initialization, pin outputs low level. Can be configured as open-drain output or push-pull output Floating is allowed 6 VCC Input Voltage reference of module Power supply 2.3V ~ 5.5V DC 7 GND Input Ground 8 GND Output Reference places of high frequency signal output 9 ANT Output Antenna interface (high frequency signal output) 10 GND Input Ground 11 GND Input Ground Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. 13 SX1276/SX1278 Wireless Modules 3.3. E32 Series User Manual E32 (433T20S2T) 3.3.1. Dimension 3.3.2. Pin definitions Pin No. Pin Pin direction 1 M0 2 M1 3 RXD Input 4 TXD Output Input （weak pull-up） Input （weak pull-up） Application Work with M1 & decide the four operating modes. Floating is not allowed, can be ground. Work with M0 & decide the four operating modes. Floating is not allowed, can be ground. TTL UART inputs, connects to external TXD output pin. Can be configured as open-drain or pull-up input; TTL UART outputs, connects to external RXD input pin. Can be configured as open-drain or push-pull output To indicate module working status To wake up the external MCU, during the procedure of self-check initialization, pin outputs 5 AUX Output low level. Can be configured as open-drain output or push-pull output Floating is allowed 6 VCC Input Voltage reference of module Power supply 2.3V ~ 5.2V DC 7 GND Input Ground 8 ANT Output Antenna interface (high frequency signal output) 9 GND Output Reference places of high frequency signal output 10 GND Input Ground 11 GND Input Ground Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. 14 SX1276/SX1278 Wireless Modules 3.4. E32 Series User Manual E32（433T27D）/ E32-TTL-1W（433T30D）/ E32 (915T30D)/ E32 (868T30D)/ E32 (170T30D) 3.4.1. Dimension 3.4.2. Pin definitions Pin No. Pin Pin direction 1 M0 2 M1 3 RXD Input 4 TXD Output Input （weak pull-up） Input （weak pull-up） Application Work with M1 & decide the four operating modes. Floating is not allowed, can be ground. Work with M0 & decide the four operating modes. Floating is not allowed, can be ground. TTL UART inputs, connects to external TXD output pin. Can be configured as open-drain or pull-up input; TTL UART outputs, connects to external RXD input pin. Can be configured as open-drain or push-pull output To indicate module working status To wake up the external MCU, during the procedure of self-check initialization, the pin 5 AUX Output outputs low level. Can be configured as open-drain output or push-pull output Floating is allowed Voltage reference of module 6 VCC Input 7 GND Input 8 Fixing hole Fixing hole 9 Fixing hole Fixing hole 10 Fixing hole Fixing hole 11 Fixing hole Fixing hole Power supply 3.3V ~ 5.2V DC Ground Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. 15 SX1276/SX1278 Wireless Modules 3.5. E32 Series User Manual E32 (433T30S)/ E32 (868T30S)/ E32 (915T30S) 3.5.1. Dimension 3.5.2. Pin definitions Pin No. Pin Pin direction 1 M0 2 M1 3 RXD Input 4 TXD Output Input （weak pull-up） Input （weak pull-up） Application Work with M1 & decide the four operating modes. Floating is not allowed, can be ground. Work with M0 & decide the four operating modes. Floating is not allowed, can be ground. TTL UART inputs, connects to external TXD output pin. Can be configured as open-drain or pull-up input. TTL UART outputs, connects to external RXD input pin. Can be configured as open-drain or push-pull output To indicate module working status & wakes up the external MCU. During the 5 AUX Input procedure of self-check initialization, the pin outputs low level. Can be configured as open-drain output or push-pull output (floating is allowed). 6 VCC Input Voltage reference of module. Power supply 3.3V ~ 5.2V DC 7 GND Input Ground 8 RESET Input Reset pin when program is loading（floating，users do not need to connect） 9 GND Input Ground pin when program is loading (floating，users do not need to connect） 10 SWIM Input SWIM pin when program is loading (floating，users do not need to connect） 11 +3.3V Input 12 PB3 Input / Output NC pin，need to be floating，not connected（for further development） 13 PB1 Input / Output NC pin，need to be floating，not connected（for further development） 14 PB0 Input / Output NC pin，need to be floating，not connected（for further development） 15 GND Ground 16 GND Ground 17 GND Ground 18 ANT Output Power supply pin when program is loading (floating，users do not need to connect） Antenna connector (high level output, 50 characteristic impedance) Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. 16 SX1276/SX1278 Wireless Modules 3.6. E32 Series User Manual E32 (400T20S)/ E32 (868T20S)/ E32 (915T20S) 3.6.1. Dimension 3.6.2. Pin definitions Pin No. Pin Pin direction 1 GND Ground 2 GND Ground 3 GND Ground 4 GND Ground 5 M0 6 M1 7 RXD Input 8 TXD Output Input （weak pull-up） Input （weak pull-up） Application Work with M1 & decide the four operating modes. Floating is not allowed, can be ground. Work with M0 & decide the four operating modes. Floating is not allowed, can be ground. TTL UART inputs, connects to external TXD output pin. Can be configured as open-drain or pull-up input. TTL UART outputs, connects to external RXD input pin. Can be configured as open-drain or push-pull output To indicate module working status & wakes up the external MCU. During the procedure 9 AUX Output of self-check initialization, the pin outputs low level. Can be configured as open-drain output or push-pull output (floating is allowed). 10 VCC Voltage reference of module. Power supply 2.3V ~ 5.2V DC 11 GND Ground 12 NC 13 GND 14 NC 15 NC 16 NC Input / Output 17 NC Input / Output 18 NC Input / Output 19 GND Ground 20 GND Ground 21 ANT 22 GND Ground Output Antenna Ground Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. 17 SX1276/SX1278 Wireless Modules E32 Series User Manual 4. Recommended circuit diagram No. Description（STM8L MCU） 1 The UART module is TTL level. Please connect to MCU of TTL level. 2 For some MCU works at 5VDC, it may need to add 4-10K pull-up resistor for the TXD & AUX pin. 5. Function description 5.1. Fixed mode Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. 18 SX1276/SX1278 Wireless Modules 5.2. Broadcast mode 5.3. Broadcast address E32 Series User Manual ⚫ i.e.: set the address of module A as 0xFFFF or 0x0000 and channel as 0x04. ⚫ When set A as transmitter (same mode, transparent transmission on), all modules with channel 0x04 will receive data, so as to realize broadcast. 5.4. Monitoring address ⚫ i.,e.: set the address of module A as 0xFFFF or 0x0000 and channel as 0x04. ⚫ When set A as receiver, it will receive the data transmitted by modules with channel 0x04, so as to realize monitoring， 5.5. ⚫ Module reset When the module is powered on, AUX outputs low level immediately, conducts hardware self-check and sets the operating mode on the basis of the user parameters. During the process, the AUX keeps low level. After the process completed, the AUX outputs high level and starts to work as per the operating mode combined by M1 and M0. Therefore, the user needs to wait the AUX rising edge as the starting point of module’s normal work. 5.6. ⚫ 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 yet to send via wireless way, or whether all wireless data has been sent through UART, or whether the module is still in the process of self-check initialization. 5.6.1. ⚫ Indication of UART output Used to wake up the external MCU Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. 19 SX1276/SX1278 Wireless Modules 5.6.2. Indication of wireless transmission E32 Series User Manual ⚫ Buffer (empty): the internal 512 bytes data in the buffer are written to the RFIC (auto sub-packing). ⚫ When AUX=1, the user can input data less than 512 bytes continuously without overflow. when AUX=0, the internal 512 bytes data in the buffer have not been written to the RFIC completely. If the user starts to transmit data at this circumstance, it may cause overtime when the module is waiting for the user data, or transmitting wireless sub package. ⚫ Notes: When AUX = 1, it does not mean that all the UART data of the module have been transmitted already, perhaps the last packet of data is still in transmission 5.6.3. Module in configuration process Only happened when power-on resetting or exiting sleep mode. 5.6.4. ⚫ Notes for AUX For function 1 & function 2 mentioned above, the priority should be given to the one with low level output, which means if it meets each of any low level output condition, AUX outputs low level, if none of the low level condition is met, AUX outputs high level. ⚫ When AUX outputs low level, it means the module is busy & cannot conduct operating mode checking. Within 1ms since AUX outputs high level, the mode switch will be completed. ⚫ After switching to new operating mode, it won’t be work in the new mode immediately until AUX rising edge 2ms later. If AUX is on the high level, the operating mode switch can be effected immediately. ⚫ When the user switches to other operating modes from mode 3 (sleep mode) or it’s still in reset process, the module will reset user parameters, during which AUX outputs low level. Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. 20 SX1276/SX1278 Wireless Modules E32 Series User Manual 6. Operation Mode Contents in below table are the introduction of input status of M1 & M0 and their corresponding mode: Mode（0-3） Mode 0 Normal M0 M1 0 0 Mode introduction UART and wireless channel are open, Remark transparent transmission is on The receiver must work in mode 0 or mode 1 UART and wireless channel are open. The difference between Mode 1 Wake-up 1 0 normal mode and wake-up mode is it will add preamble The receiver can work in mode 0, code automatically before data packet transmission so that mode 1 or mode 2 it can awaken the receiver works in mode 2 Mode 2 Power-saving Mode 3 Sleep 6.1. ⚫ UART is disabled. Wireless module works at WOR mode 0 1 (wake on radio). It will open the UART and transmit data after receiving the wireless data 1 1 Parameter setting 1, the transmitter must work in mode 1 2, transmitting is not allowed in this mode See more in operating parameter Mode switch The user can decide the operating mode by the combination of M1 and M0. The two GPIO of MCU can be used to switch mode. After modifying M1 or M0, it will start to work in new mode 1ms later if the module is free. If there are any serial data that are yet to finish wireless transmitting, it will start to work in new mode after the UART transmitting finished. After the module receives the wireless data & transmits the data through serial port, it will start to work in new mode after the transmitting finished. Therefore, the mode-switch is only valid when AUX outputs 1, otherwise it will delay. ⚫ For example, in mode 0 or mode 1, if the user inputs massive data consecutively and switches operating mode at the same time, the mode-switch operation is invalid. New mode checking can only be started after all the user’s data process completed. It is recommended to check AUX pin out status and wait 2ms after AUX outputs high level before switching the mode. ⚫ If the module switches from other modes to stand-by mode, it will work in stand-by mode only after all the remained data process completed. The feature can be used to save power consumption. For example, when the transmitter works in mode 0, after the external MCU transmits data “12345”, it can switch to sleep mode immediately without waiting the rising edge of the AUX pin, also the user’s main MCU will go dormancy immediately. Then the module will transmit all the data through wireless transmission & go dormancy 1ms later automatically, which reduces MCU working time & save power. ⚫ Likewise, this feature can be used in any mode-switch. The module will start to work in new mode within 1ms after completing present mode task, which enables the user to omit the procedure of AUX inquiry and switch mode swiftly. For example, when switching from transmitting mode to receiving mode, the user MCU can go dormancy before mode-switch, using external interrupt function to get AUX change so that the mode-switch can be realized. ⚫ This operation is very flexible and efficient. It is totally designed on the basis of the user MCU’s convenience, at the same time the work load and power consumption of the whole system have been reduced and the efficiency of whole system is largely improved. Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. 21 SX1276/SX1278 Wireless Modules 6.2. E32 Series User Manual Normal mode (mode 0) When M1 = 0 & M0 = 0, module works in mode 0 The module can receive the user data via serial port, and transmit wireless data package of 58 bytes. When the data inputted by user is up to 58 byte, the module will start wireless transmission. During which the user can input data continuously for transmission. When the required transmission bytes are less than 58 bytes, the module will wait 3-byte time and treat it as data termination unless continuous data inputted by user. Then the module will transmit all the data through wireless Transmitting channel. When the module receives the first data packet from user, the AUX outputs low level. After all the data are transmitted into RF chip and transmission start , AUX outputs high level. At this time, it means that the last wireless data package transmission is started, which enables the user to input another 512 bytes continuously. The data package transmitted from the module working in mode 0 can only be received by the module working in mode 0 or 1. The wireless receiving function of the module is on, the data packet transmitted from the module working in mode 0 & mode 1 can be received. Receiving After the data packet is received, the AUX outputs low level, 5ms later the module starts to transmit wireless data through serial port TXD pin. After all the wireless data have been transmitted via serial port, the AUX outputs high level. 6.3. Wake-up mode (mode 1) When M1 = 0 & M0 = 1, module works in mode 1 The condition of data packet transmission & AUX function is the same as mode 0. The only difference is that the module will add preamble code before each data packet automatically. The preamble code length depends on the Transmitting wake-up time set in the user parameters. The purpose of the preamble code is waking up the receiving module works in mode 2. Therefore, the data package transmitted from mode 1 can be received by mode 0, mode1 and mode 2. Receiving The same as that in mode 0. 6.4. Power-saving mode (mode 2) When M1 = 1 & M0 = 0, module works in mode 2 Transmitting UART is closed, the module cannot receive any serial port data from outside MCU. Hence the function of wireless transmission is not available for the module working in this mode. In mode 2, it is required the data transmitter works in mode 1. The wireless module monitors the preamble code at regular time. Once it gets the preamble code, it will remain as receiving status and waiting for the completion of receiving the entire valid data package. Receiving Then the AUX outputs low level, 5ms later the serial port is open to transmit received wireless data through TXD. Finally, AUX outputs high level after process completed. The wireless module stays in “power-saving – monitoring” working status (polling). By setting different wake-up time, the module will have different receiving response delay (2s in maximum) and average power consumption (30uA in minimum). The user needs to achieve a balance between communication delay time & average power consumption. Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. 22 SX1276/SX1278 Wireless Modules 6.5. E32 Series User Manual Sleep mode (mode 3) When M1=1, M0=1, module works in mode 3 Transmitting N/A Receiving N/A Parameter setting This mode can be used for parameter setting. It uses serial port 9600 & 8N1 to set module working parameters through specific instruction format. (pls refer to parameters setting for details) When the mode changes from stand-by mode to others, the module will reset its parameters, during which the Notes AUX keeps low level and then outputs high level after reset completed. It is recommended to check the AUX rising edge for user. 7. Command format In sleep mode（Mode 3：M1=1, M0=1）, it supports below instructions on list. (Only support 9600 and 8N1 format when setting) No. Instruction format Illustration 1 C0 + working parameters C0 + 5 bytes working parameters are sent in hexadecimal format. 6 bytes in total and must be sent in succession. ( Save the parameters when power-down ) Three C1 are sent in hexadecimal format. The module returns the saved parameters and 2 C1+C1+C1 3 C2 + working parameters 4 C3+C3+C3 5 C4+C4+C4 7.1. must be sent in succession. C2 + 5 bytes working parameters are sent in hexadecimal format. 6 bytes in total and must be sent in succession. ( Do not save the parameters when power-down ) Three C3 are sent in hexadecimal format. The module returns the version information and they must be sent in succession. Three C4 are sent in hexadecimal format. The module will reset one time and they must be sent in succession. Default parameters 7.1.1. Operating frequency 433MHz: Default parameter values：C0 00 00 1A 17 44 Model Frequency Address Channel Air data rate Baud rate Parity E32-TTL-100 (433T20DC) 433MHz 0x0000 0x17 2.4kbps 9600 8N1 Transmitting power 100mW Default parameter values：C0 00 00 1A 17 44 Model Frequency Address Channel Air data rate Baud rate Parity E32 (433T20S） 433MHz 0x0000 0x17 2.4kbps 9600 8N1 Transmitting power 100mW Default parameter values：C0 00 00 1A 17 44 型号 Model Frequency Address Channel Air data rate Baud rate Parity E32 (433T120S2) 433MHz 0x0000 0x17 2.4kbps 9600 8N1 Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. Transmitting power 100mW 23 SX1276/SX1278 Wireless Modules E32 Series User Manual Default parameter values：C0 00 00 1A 17 44 Model Frequency Address Channel Air data rate Baud rate Parity E32 (433T27D） 433MHz 0x0000 0x17 2.4kbps 9600 8N1 Transmitting power 500mW Default parameter values：C0 00 00 1A 17 44 Model Frequency Address Channel Air data rate Baud rate Parity E32 (433T30D) 433MHz 0x0000 0x17 2.4kbps 9600 8N1 7.1.2. Transmitting power 1W Operating frequency 470MHz: Default parameter values：C0 00 00 1A aC 44 Model Frequency Address Channel Air data rate Baud rate Parity E32 (400T20S) 470MHz 0x0000 0xaC 2.4kbps 9600 8N1 7.1.3. Transmitting power 20dBm Operating frequency 868MHz: Default parameter values：C0 00 00 1A 06 40 Model Frequency Address Channel Air data rate Baud rate Parity E32 (868T20S) 868MHz 0x0000 0x06 2.4kbps 9600 8N1 Transmitting power 100mW Default parameter values：C0 00 00 1A 06 44 Model Frequency Address Channel Air data rate Baud rate Parity E32 (868T20D) 868MHz 0x0000 0x06 2.4kbps 9600 8N1 Transmitting power 100mW Default parameter values：C0 00 00 1A 06 44 Model Frequency Address Channel Air data rate Baud rate Parity E32 (868T30D) 868MHz 0x0000 0x06 2.4kbps 9600 8N1 Transmitting power 1W Default parameter values：C0 00 00 1A 06 44 Model Frequency Address Channel Air data rate Baud rate Parity E32 (868T30S) 868MHz 0x0000 0x06 2.4kbps 9600 8N1 7.1.4. Transmitting power 1W Operating frequency 915MHz: Default parameter values：C0 00 00 1A 0F 44 Model Frequency Address Channel Air data rate Baud rate Parity E32 (915T20S) 915MHz 0x0000 0x0F 2.4kbps 9600 8N1 Transmitting power 100mW Default parameter values：C0 00 00 1A 0F 44 Model Frequency Address Channel Air data rate Baud rate Parity E32 (915T20D) 915MHz 0x0000 0x0F 2.4kbps 9600 8N1 Transmitting power 100mW Default parameter values：C0 00 00 1A 0F 44 Model Frequency Address Channel Air data rate Baud rate Parity E32 (915T30D) 915MHz 0x0000 0x0F 2.4kbps 9600 8N1 Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. Transmitting power 1W 24 SX1276/SX1278 Wireless Modules E32 Series User Manual Default parameter values：C0 00 00 1A 0F 44 Model Frequency Address Channel Air data rate Baud rate Parity E32 (915T30S) 915MHz 0x0000 0x0F 2.4kbps 9600 8N1 7.1.5. Transmitting power 1W Operating frequency 915MHz: Default parameter values：C0 01 0A 1A 0A 44 Model Frequency Address Channel Air data rate Baud rate Parity E32 (170T30D) 170MHz 0x0000 0x28 2.4kbps 9600 8N1 7.2. Transmitting power 1W Reading operating parameters Instruction format Description In sleep mode（M0=1，M1=1） ， C1+C1+C1 User gives the module instruction (HEX format): C1 C1 C1, Module returns the present configuration parameters. For example, C2 00 00 1A 17 44. 7.3. Reading version number Instruction format Description In sleep mode（M0=1，M1=1）, User gives the module instruction (HEX format): C3 C3 C3, C3+C3+C3 Module returns its present version number, for example C3 32 xx yy. 32 here means the module model (E32 series); xx is the version number and yy refers to the other module features. 7.4. Reset command Instruction format Description In sleep mode（M0=1，M1=1）, User gives the module instruction (HEX format): C4 C4 C4, the module resets for one time. During C4+C4+C4 the reset process, the module will conduct self-check, AUX outputs low level. After reset completing, the AUX outputs high level, then the module starts to work regularly which the working mode can be switched or be given another instruction. Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. 25 SX1276/SX1278 Wireless Modules 7.5. No. E32 Series User Manual Parameter setting command Item Description Remark ⚫ Fix 0xC0 or 0xC2, it means this frame data is control command 0 HEAD Must be 0xC0 or 0xC2 C0: Save the parameters when power-down C2: Do not save the parameters when powerdown High address byte of module 1 ADDH 2 ADDL 3 SPED 00H-FFH （the default 00H） Low address byte of module 00H-FFH （the default 00H） 7 6 UART parity bit 0 0 8N1 (default) 0 1 8O1 1 0 8 E1 1 1 8N1 (equal to 00) 5 4 3 0 0 0 1200 0 0 1 2400 0 1 0 4800 0 1 1 9600 (default) 1 0 0 19200 1 0 1 38400 1 1 0 57600 1 1 1 115200 2 1 0 Air data rate（bps） 0 0 0 0.3k 0 0 1 1.2k transmitting 0 1 0 2.4k (default) interference 0 1 1 4.8k 1 0 0 9.6k 1 0 1 19.2k 1 1 0 19.2k (same to 101) 1 1 1 19.2k (same to 101) 7 6 5 reserved TTL UART baud rate（bps） 4-0, channel (410M + CHAN*1M), default 17H（433MHz） CHAN UART mode can be different between communication parties Communication channel 4 ⚫ 4 ~0, channel (862MHz+CHAN * 1MHz), default 06H (868MHz) 4 ~0, channel (900MHz+CHAN * 1MHz), default 0FH (915MHz) 5 ~ 0, channel (160MHz+CHAN * 1MHz), default 28H (170MHz) Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. ⚫ UART baud rate can be different between communication parties ⚫ The UART baud rate has nothing to do with wireless transmission parameters & won’t affect the wireless transmit / receive features. ⚫ The lower the air data rate, the longer the distance, better performance and antilonger transmitting time ⚫ The air data rate must keep the same for both communication parties. Write 0 00H-1FH, correspond to 410~441MHz 00H-1FH, correspond to 862~893MHz 00H-1FH, correspond to 900~931MHz 00H-36H, correspond to 160~173.5MHz 26 SX1276/SX1278 Wireless Modules E32 Series User Manual E32 (470T20S3) channel 00H-73H, correspond to 410~525MHz 7~0, (410MHz+CHAN * 1MHz), default 3CH (470MHz) 7 Fixed transmission enabling bit（similar to MODBUS） 0 Transparent transmission mode ⚫ In fixed transmission mode, the first three bytes of each user's data frame can be used as high/low address and channel. The module changes its address and channel 1 when transmit. And it will revert to original Fixed transmission mode setting after complete the process. 6 1 0 IO drive mode (default 1) ⚫ This bit is used to the module internal pullup resistor. It also increases the level’s TXD and AUX push-pull outputs, RXD pull-up inputs adaptability in case of open drain. But in TXD、AUX open-collector outputs, RXD open-collector some cases, it may need external pull-up inputs resistor. 5 4 3 wireless wake-up time 0 0 0 250ms (default) 0 0 1 500ms 0 1 0 750ms 0 1 1 1000ms transmit 1 0 0 1250ms corresponding time continuously. 1 0 1 1500ms 1 1 0 1750ms ⚫ The transmit & receive module work in mode 0, whose delay time is invalid & can be arbitrary value. ⚫ ⚫ The transmitter works in mode 1 can the preamble code of the When the receiver works in mode 2, the time means the monitor interval time (wireless wake-up). Only the data from 1 5 OPTION 1 1 transmitter that works in mode 1 can be 2000ms received. 2 FEC switch 0 Turn off FEC ⚫ After turn off FEC, the actual data transmission rate increases while antiinterference ability decreases. Also the transmission distance is relatively short. 1 Turn on FEC (default) ⚫ Both communication parties must keep on the same pages about turn-on or turn-off FEC. 1 0 Transmission power (approximation) Applicable for E32-TTL-100, E32-TTL-100S1, 0 0 20dBm (default) 0 1 17dBm The external power must make sure the 1 0 14dBm ability of current output more than 250mA and E32-T100S2。 ensure the power supply ripple within 100mV. 1 1 10dBm Low power transmission is not recommended due to its low power supply efficiency. 1 0 Transmission power (approximation) 0 0 27dBm (default) The external power must make sure the 0 1 24dBm ability of current output more than 700mA and 1 0 21dBm ensure the power supply ripple within 100mV. Applicable for E32-TTL-500。 Low power transmission is not 1 1 18dBm Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. recommended due to its low power supply efficiency. 27 SX1276/SX1278 Wireless Modules E32 Series User Manual Transmission power (approximation) 1 0 Applicable for E32-TTL-1W, E32 (433T30S), E32 0 0 30dBm (default) 0 1 27dBm The external power must make sure the 1 0 24dBm ability of current output more than 1A and (868T30S), E32 (915T30S) ensure the power supply ripple within 100mV. 1 1 Low power transmission is not 21dBm recommended due to its low power supply efficiency. For example: The meaning of No.3 "SPED" byte: The binary bit of the byte 7 6 5 4 3 2 1 0 Configures by user 0 0 0 1 1 0 1 0 Meaning UART parity bit 8N1 Corresponding hexadecimal UART baud rate is 9600 1 Air data rate is 2.4k A 8. Parameter setting When the module is under mode 2 (M1M0=11), module parameters could be configured by command or host computer software. Please visit www.cdebyte.com to download parameter configurating software. Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. 28 SX1276/SX1278 Wireless Modules E32 Series User Manual 9. Production guidance 9.1. Reflow soldering temperature Profile Feature Curve characteristics Sn-Pb Assembly Pb-Free Assembly Solder paste Sn63/Pb37 Sn96.5/Ag3/Cu0.5 Preheat Temperature min （Tsmin） Min preheating temp. 100℃ 150℃ Preheat temperature max (Tsmax) Mx preheating temp. 150℃ 200℃ Preheat Time (Tsmin to Tsmax)(ts) Preheating time 60-120 sec 60-120 sec Average ramp-up rate 3℃/second max 3℃/second max Liquid phase temp. 183℃ 217℃ Time below liquid phase line 60-90 sec 30-90 sec Peak temp. 220-235℃ 230-250℃ Aveage ramp-down rate 6℃/second max 6℃/second max max 6 minutes max 8 minutes Solder Paste Average ramp-up rate(Tsmax to Tp) Liquidous Temperature (TL) Time（tL）Maintained Above（TL） Peak temperature（Tp） Aveage ramp-down rate（Tp to Tsmax） Time 25℃ to peak temperature 9.2. Time to peak temperature for 25℃ Reflow soldering curve Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. 29 SX1276/SX1278 Wireless Modules 10. E32 Series User Manual FAQ 10.1. 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 the transmitting power. ⚫ Due to antenna quality or poor matching between antenna and module. 10.2. 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. ⚫ Please check the stability of power source, the voltage cannot fluctuate too much. ⚫ Please make sure anti-static measure are taken when installing and using, high frequency devices have electrostatic susceptibility. ⚫ 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. Important declarations ⚫ All rights to interpret and modify this manual belong to Ebyte. ⚫ This manual will be updated based on the upgrade of firmware and hardware, please refer to the latest version. ⚫ Please refer to our website for new product information. 12. About us Technical support: support@cdebyte.com Documents and RF Setting Software downloading: www.cdebyte.com —————————————————————————————————————————————————————————— Tel: +86-28-61399028 (ext. 812) Fax: +86-28-64146160 Web: www.cdebyte.com Address：Innovation Center D347, 4# XI-XIN Road,Chengdu, Sichuan, China Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd. 30
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