Chengdu Ebyte Electronic Technology Co., Ltd.
E22-400T22S1C User manual
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
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1. Overview
1.1 Introduction
E22-400T22S1C is a wireless serial port module (UART) based on
ASR6505 RF chip. It has multiple transmission modes, working in the
410.125MHz~493.125MHz,
(default 433.125MHz), 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 the advantages of concentrated power density and strong anti-interference
ability. The module has a software FEC forward error correction algorithm, which has high coding efficiency and
strong 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.
The module has data encryption. Data transmitted over the air, with randomness, makes data interception
meaningless through strict encryption and decryption algorithms. The module reserves multiple IO interfaces to
provide custom development services.It supports packet length setting and also supports different real-time and
data packets.
1.2 Features
Communication distance tested is up to 7km；
Maximum transmission power of 160mW, software multi-level adjustable；
Support the global license-free ISM 433MHz band；
Support air date rate of 0.3kbps～62.5kbps；
Support new generation LoRa technology based on ASR6505；
Compared with SX1276, the power consumption of hardware is reduced by 40%,and the power consumption
of 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 3.3V~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.
