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Chengdu Ebyte Electronic Technology Co., Ltd.

E78-900M22S1A User Manual

Copyright ©2012–2021

Chengdu Ebyte Electronic Technology Co.,Ltd

4

2 Parameters

2.1 Limit Parameters:

Main Parameters

Value

Notice

Min.

Max.

Power supply voltage (V)

0

3.9

Over 3.9V will permanently burn the module

Blocking power (dBm)

-

10

The probability of burning is small when used at
close range

Working temperature (℃)

-40

+85

Industrial grade

2.2 Operating Parameters:

Main Parameters

Value

Notice

Min.

Typical

Max.

Working voltage (V)

1.8

3.3

3.7

≥3.3V can guarantee output power

Communication level (V)

-

3.3

-

Using 5V TTL is risky to burn

Working temperature (℃)

-40

-

+85

Industrial design

Working frequency (MHz)

850

868/915

925

Support ISM frequency band

Power

Emission current (mA)

-

145

-

Instantaneous power consumption

Receiving current (mA)

-

13

-

-

Sleep current (μA)

-

2.0

-

Software shutdown

Maximum transmit power (dBm)

-

21.5

22

-

Receiving sensitivity (dBm)

-122

-123

-126

The air rate is 595kbps

Air rate

LoRa

bps

-

-

62.5K

User programmable customization

GFSK

bps

-

-

300K

User programmable customization

Parameters

Value

Notice

Ideal Range

5500m

At Max TX power and 2.4kbps air rate, Two modules in a line of
sight, clear weather, with 5dbi antennas at 2.5meters.

Crystal frequency

32MHz

TXCO

Modulation

LoRa(recommended) GFSK

LoRa

Encapsulation method

SMA

-

Interface method

Stamp-hole

Diameter 1.1mm

Dimensions

26*16mm

-

RF interface

IPEX/stamp-hole

Equivalent impedance is about 50Ω

Содержание E78-900M22S1A

Страница 1: ...Chengdu Ebyte Electronic Technology Co Ltd E78 900M22S1A user manual Copyright 2012 2019 Chengdu Ebyte Electronic Technology Co Ltd E78 900M22S1A ASR6505 868 915MHz LoRaWAN RF Module...

Страница 2: ...AMETERS 4 3 SIZE AND PIN DEFINITION 6 3 1 SIZE AND PIN DEFINITION 6 3 2 PIN DEFINITION 7 4 HARDWARE AND SOFTWARE GUIDE 8 4 PROGRAMMING DIAGRAM AND GUIDE 9 4 1 E78 900M22S1A BURNING INTERFACE 9 5 PRODU...

Страница 3: ...ure to third parties of this document or any part thereof without the express permission of EBYTE is strictly prohibited The information contained herein is provided as is and EBYTE assumes no liabili...

Страница 4: ...e for LPWAN application chips The E78 series products are hardware platforms and cannot be used independently Users need to carry out secondary development We can customize standard LoRaWan and Ali li...

Страница 5: ...g temperature 40 85 Industrial design Working frequency MHz 850 868 915 925 Support ISM frequency band Power Emission current mA 145 Instantaneous power consumption Receiving current mA 13 Sleep curre...

Страница 6: ...ith 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 When the customer uses an ext...

Страница 7: ...Chengdu Ebyte Electronic Technology Co Ltd E78 900M22S1A User Manual Copyright 2012 2021 Chengdu Ebyte Electronic Technology Co Ltd 6 3 Size and Pin definition 3 1 Size and Pin definition...

Страница 8: ...18 GND Ground wire connected to the power reference ground 19 ANT Output Antenna interface stamp hole 50 ohm characteristic impedance 20 GND Ground wire connected to the power reference ground 21 GND...

Страница 9: ...m value it will cause permanent damage to the module Please check the stability of the power supply and the voltage should not fluctuate greatly and frequently When designing the power supply circuit...

Страница 10: ...d the antenna to the outside of the case The antenna must not be installed inside the metal shell which will greatly reduce the transmission distance 4 1 Software Writing This module is SX1262 STM8L15...

Страница 11: ...eheating temp 150 200 Preheat Time Tsmin to Tsmax ts Preheating time 60 120 sec 60 120 sec Average ramp up rate Tsmax to Tp Average ramp up rate 3 second max 3 second max Liquidous Temperature TL Liqu...

Страница 12: ...5V the lower the voltage the lower the transmitting power Due to antenna quality or poor matching between antenna and module 6 2 Module is easy to damage Please check the power supply source ensure it...

Страница 13: ...Co Ltd 12 Revision history Version Date Description Issued by 1 0 2021 03 1 Initial version Linson About us Website www ebyte com Sales info cdebyte com Support support cdebyte com Tel 86 28 61399028...

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