Chengdu Ebyte Electronic Technology Co., Ltd. E28-2G4M20S User Manual Contents 1.1 Brief introduction ..............................3 1.2 Features ..................................3 1.3 Application ................................3 2.Specification and parameter ..............................4 2.1 Limit parameter ................................ 4 2.2 Operating parameter ..............................4 3.Size and pin definition ................................. 5 4.
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Manual 1.Overview 1.1 Brief introduction E28-2G4M20S is a 2.4GHz bluetooth module designed by Chengdu Ebyte,with long distance and ultra-low power consumption. E28-2G4M20S is small-sized SMD module(pin spacing 1.27mm),built-in PCB antenna and IPEX antenna. High precision 52MHz crystal is used. Based on the original imported RF chip SX1278 from Semtech,the IC...
Chengdu Ebyte Electronic Technology Co., Ltd. E28-2G4M20S User Manual 2.Specification and parameter 2.1 Limit parameter Performance Main parameter Remark Min. Max. Voltage over 3.6V will cause permanent Power supply(V) damage to module Chances of burn is slim when modules are Blocking power(dBm)...
Chengdu Ebyte Electronic Technology Co., Ltd. E28-2G4M20S User Manual 3.Size and pin definition Pin item Pin direction Pin application Power supply: 1.8~3.6V (Ceramic filter capacitor is advised to add) Ground, connecting to power supply reference ground MISO_TX Output SPI data output pin,can be used as UART transmitting pin...
Chengdu Ebyte Electronic Technology Co., Ltd. E28-2G4M20S User Manual Ground, connecting to power supply reference ground 4. Basic operation 4.1 Hardware design It is recommended to use a DC stabilized power supply. The power supply ripple factor is as small as possible, and ...
Chengdu Ebyte Electronic Technology Co., Ltd. E28-2G4M20S User Manual 4.2 Software editing This module is based on SX1280,same drive way as SX1280,user can refer to SX1280 datasheet. DIO is general I/O port,see more in SX1280 datasheet. GDO 2 is generally configurated as IRQ function, IRQ pin can also be disconnected. The SPI query mode can be ...
Chengdu Ebyte Electronic Technology Co., Ltd. E28-2G4M20S User Manual 6.FAQ 6.1 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.
Chengdu Ebyte Electronic Technology Co., Ltd. E28-2G4M20S User Manual Average ramp-up rate(Tsmax to Tp) Average ramp-up rate 3℃/second max 3℃/second max Liquidous Temperature (TL) Liquid phase temp. 183℃ 217℃ Time(tL)Maintained Above(TL) Time below liquid phase line 60-90 sec 30-90 sec Peak temperature(Tp)...
Chengdu Ebyte Electronic Technology Co., Ltd. E28-2G4M20S User Manual 9.Antenna guidance 9.1 Antenna recommendation The antenna is an important role in the communication process. A good antenna can largely improve the communication system. Therefore, we recommend some antennas for wireless modules with excellent performance and reasonable price.