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Chengdu Ebyte Electronic Technology Co., Ltd.

E73-2G4M04S1F User manual

Copyright ©2012–2021,Chengdu Ebyte Electronic Technology Co.,Ltd.

7

4. Basic Operation

4.1 Hardware Design

It is recommended to use DC stabilized power supply to supply power to the module. The power supply ripple
coefficient is as small as possible, and the module needs to be reliably grounded.

Please pay attention to the correct connection of the positive and negative poles of the power supply. If the reverse
connection is connected, the module may be permanently damaged.

Please check the power supply to ensure that between the recommended supply voltage, if exceeding the maximum,
the module will be permanently damaged.

Please check the stability of the power supply, the voltage can not be significantly frequent.

When designing the power supply circuit for the module, it is often recommended to reserve more than 30% of the
margin, and the whole machine is beneficial for long-term stable operation.

The module should be as far away as possible from the power supply, transformers, high-frequency wiring and other
parts with large electromagnetic interference.

High-frequency digital traces, high-frequency analog traces, and power traces must be avoided under the module. If
it is necessary to pass through the module, assume that the module is soldered to the Top Layer, and the copper is
spread on the Top Layer of the module contact part(All copper-covered and well grounded), and must be close to
the digital part of the module and routed in the Bottom Layer.

Assuming the module is soldered or placed in the Top Layer, it is also wrong to randomly route the Bottom Layer or
other layers, which will affect the module's spurs and receiving sensitivity to varying degrees.

Assume that there are traces with large electromagnetic interference around the module (high-frequency digital,
high-frequency analog, power trace), which will greatly affect the performance of the module. It is recommended to
stay away from the module according to the strength of the interference. If possible, you can do it properly. Isolation
and shielding

If the communication line uses a 5V level, a 1k-5.1k resistor must be connected in series (not recommended, there is
still a risk of damage).

Try to stay away from some physical layers and also have a 2.4GHz TTL protocol, for example: USB3.0

The antenna mounting structure has a great influence on the performance of the module. It is necessary to ensure
that the antenna is exposed, preferably vertically upward. When the module is mounted inside the case, use a good
antenna extension cable to extend the antenna to the outside of the case.

The antenna must not be installed inside the metal case, which will greatly reduce the transmission distance.

4.2 Software Programming

The core of this module is nRF52811, which is completely equivalent to nRF52811. Users can operate according to
the nRF52811 chip manual (see nRF52811 manual for details).

Because the officially provided programming tool nRFgo Studio has poor compatibility, it is recommended to use
J-LINK-V8 or above for program burning.

About the issue that the old model can be programmed, while the new model can't be programmed, It is because the
new model being added with read/write protection during production. It needs to be properly connected to the line
and then use the official nRFgo Studio for Recover (Jlink supports the official nRFgo). Studio), as shown below:

Summary of Contents for E73-2G4M04S1F

Page 1: ...u Ebyte Electronic Technology Co Ltd E73 2G4M04S1F User manual Copyright 2012 2021 Chengdu Ebyte Electronic Technology Co Ltd 0 E73 2G4M04S1F User Manual RF52811 2 4GHz BLE5 1 IEEE 802 15 4 2006 BLE M...

Page 2: ...ETER 4 3 SIZE AND PIN DEFINITION 5 4 BASIC OPERATION 7 4 1 HARDWARE DESIGN 7 4 2 SOFTWARE PROGRAMMING 7 5 FAQ 8 5 1 COMMUNICATION RANGE IS TOO SHORT 8 5 2 MODULE IS EASY TO DAMAGE 9 5 3 HIGH BIT ERROR...

Page 3: ...l or other ways whether express or implied The test data obtained in the article are all obtained by the Ebyte laboratory and the actual results may vary slightly We hereby declared that all brand nam...

Page 4: ...tional development The module can be connected with other antennas through IPEX Because the module is a pure hardware SOC module it can be used only after the user programs it 1 2 Features Support BLE...

Page 5: ...V 3 0 For 5V TTL it may be at risk of burning down Operating temperature 40 85 Industrial design Operating frequency MHz 2379 2430 2496 Support ISM band Power consumption TX current mA 18 Instant pow...

Page 6: ...eference ground of power 1 GND Input Ground connected to reference ground of power 2 GND Input Ground connected to reference ground of power 3 DEC2 1 3 V digital power decoupling regulator see chip ma...

Page 7: ...PIO 20 P0 05 Input Output MCU GPIO 21 P0 06 Input Output MCU GPIO 22 P0 07 Input Output MCU GPIO 23 P0 08 Input Output MCU GPIO 24 P0 09 Input Output MCU GPIO 25 P0 10 Input Output MCU GPIO 26 P0 11 I...

Page 8: ...o randomly route the Bottom Layer or other layers which will affect the module s spurs and receiving sensitivity to varying degrees Assume that there are traces with large electromagnetic interference...

Page 9: ...performance will be poor when testing near ground Sea water has great ability in absorbing wireless radio wave so performance will be poor when testing near the sea The signal will be affected when th...

Page 10: ...whether there is interference on the SPI line The SPI bus line should not be too long Unsatisfactory power supply may also cause garbled characters and ensure the reliability of the power supply If t...

Page 11: ...na E73 2G4M04S1F nRF52811 BLE5 1 IEEE 802 15 4 2006 192KB 24KB 4dBm 17 5 28 7mm PCB IPEX E73 2G4M04S1FX nRF52811 BLE5 1 IEEE 802 15 4 2006 192KB 24KB 4dBm 17 5 28 7mm IPEX E73 2G4M04S1B nRF52832 BLE4...

Page 12: ...unication process The inferior antenna often has a great impact on the communication system Therefore we recommend some antennas that support our wireless modules and have excellent performance and re...

Page 13: ...Ltd 12 Revision history Version Date Description Issued by 1 0 2021 7 15 Initial version Linson About us Sales hotline 0086 4000 330 990 Tel 0086 28 61399028 Technical support support cdebyte com Web...

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