Chengdu Ebyte Electronic Technology Co.,Ltd.
E22-400T22D User Manual
Copyright ©2012–2019
，
Chengdu Ebyte Electronic Technology Co.,Ltd.
1-3
1. Overview
1.1 Introduction
E22-400T22D is a wireless serial port module (UART) based on
SEMTECH's SX1268 RF chip. It has multiple transmission modes, working
in the 410.125MHz~493.125MHz, frequency (default 433.125MHz), LoRa
spread spectrum technology, TTL level output, compatible with 3.3V and 5V
IO port voltage.
E22-400T22D uses a new generation of LoRa spread spectrum technology. Compared with the traditional SX1278
solution, the SX1268 solution has a longer transmission distance, faster speed, lower power consumption and smaller
size. It Supports wake-up over air, wireless configuration, carrier monitoring, automatic relay, communication key and
other functions, supports sub-package length setting, and can provide custom development services.
1.2 Features
Develop a new LoRa spread spectrum modulation technology based on SX1268,which will bring longer
communication distance and stronger anti-interference ability;
Support automatic relay networking, multi-level relay is suitable for ultra-long distance communication, multiple
networks running in the same area are running simultaneously;
Support users to set their own communication keys, which cannot be read, greatly improving the confidentiality of
user’s data;
Support LBT function, monitor the channel environmental noise before sending, which can greatly improve the
communication success rate of the module in harsh environments;
Support RSSI signal strength indication function for evaluating signal quality, improving communication network,
ranging;
Support wireless parameter configuration, send command data packets wirelessly, remotely configure or read
wireless module parameters;
Support wake-up over air, that is, ultra-low power consumption function, suitable for battery-powered applications;
Supports fixed-point transmission, broadcast transmission, and channel monitoring;
Supports deep hibernation, and the whole machine consumes about 2uA in this mode;
Support the global license-free ISM 433MHz band and 470MHz meter reading frequency band;
Under ideal conditions, the communication distance can reach 5km;
The parameters are saved when power off, and the module will work according to the set parameters after power
on again;
Efficient watchdog design, once an exception occurs, the module will automatically restart and continue to work
according to the previous parameter settings;
Support data transmission rate of 0.3k
～
62.5kbps;
Support 2.3 ~ 5.5V power supply, power supply over 5V can ensure the best performance;
Industrial grade standard design, support long-term from at -40
～
+ 85
℃
;
The size and shape are consistent with our E32 series modules, which can be directly replaced to improve product
performance and distance.
