Overview; Main Parameter; Parameter Description - Ebyte E78-470LN22S User Manual

Chengdu Ebyte Electronic Technology Co.,Ltd.

1. Overview

E78-470LN22S is a standard LoraWan node module designed and manufactured by
Chengdu Ebyte Electronic Technology Co., Ltd., working frequency band
CN470~510MHZ, supports CLASS-A/CLASS-C node type, supports ABP/OTAA two
network access modes, and at the same time, this module With a variety of low-power
modes, the external communication interface uses a standard UART. Users can easily
access the standard LoraWan network through AT commands, making it an excellent
choice for IoT applications.

1.1 Main parameter

Product
Core IC
model
ASR6501
E78-470LN22S

1.2 Parameter Description

When designing the power supply circuit for the module, it is recommended to reserve more than 30% of the

remaining amount, and the whole machine is conducive to long-term stable operation；
The current required for the instant of launch is large but often because the launch time is extremely short, the total

energy consumed may be smaller；
When the customer uses an external antenna, the impedance matching degree between the antenna and the module

at different frequency points will affect the magnitude of the emission current to varying degrees;
The current consumed by the RF chip in the pure receiving state is called the receiving current. Some RF chips

with communication protocols or developers have loaded some self-developed protocols on the whole machine,
which may cause the receiving current of the test to be too large；
The current in the purely receiving state is often mA level, and the "receiving current" of the μA level needs to be

processed by the developer through software;
The shutdown current is often much smaller than the current consumed by the power supply part of the whole

machine at no load, without being overly demanding;
Since the material itself has a certain error, a single LRC component has an error of ±0.1%. However, since a

plurality of LRC components are used in the entire RF loop, there is a case where error accumulation occurs,
resulting in a difference in emission current and reception current of different modules;
Reducing the transmit power can reduce power consumption to some extent, but reducing the transmit power

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Size Net weight
1.3±0.1g
20* 14*2.91 mm
working Working
temperature humidity
-40 ~ 85℃ 10% ~ 90%
E78-470LN22S User Manual
Storage
temperature
-40 ~ 125°C
3