Chengdu Ebyte Electronic Technology Co., Ltd. E73-2G4M04S1D User manual
Copyright ©2012–2018，Chengdu Ebyte Electronic Technology Co.,Ltd.
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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 modu le. 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 nRF52832, which is completely equivalent to nRF52832. Users can operate according to
the nRF52832 chip manual (see nRF52832 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:
