Software Programming - Ebyte E180-ZG120A User Manual

Chengdu Ebyte Electronic Technology Co.,Ltd.
Reverse connection may cause permanent damage to the module；
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Please check the power supply to ensure it is within the recommended voltage otherwise when it exceeds the maximum value the
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module will be permanently damaged；
Please check the stability of the power supply, the voltage cannot be fluctuated frequently；
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When designing the power supply circuit for the module, it is often recommended to reserve more than 30% of the margin, so the
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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
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large electromagnetic interference
High-frequency digital routing, high-frequency analog routing, and power routing must be avoided under the module. If it is
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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(well grounded), it must be close to the digital part of the module and routed in the Bottom
Layer；
Assuming the module is soldered or placed over the Top Layer, it is wrong to randomly route over the Bottom Layer or other
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layers, which will affect the module's spurs and receiving sensitivity to varying degrees；
It is assumed that there are devices with large electromagnetic interference around the module that will greatly affect the
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performance. It is recommended to keep them away from the module according to the strength of the interference. If necessary,
appropriate isolation and shielding can be done；
Assume that there are traces with large electromagnetic interference (high-frequency digital, high-frequency analog, power traces)
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around the module that 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 necessary, appropriate isolation and shielding can be done.
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
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of damage)；
Try to stay away from some physical layers such as TTL protocol at 2.4GHz , for example: USB3.0；
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The mounting structure of antenna has a great influence on the performance of the module. It is necessary to ensure that the
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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；
The antenna must not be installed inside the metal case, which will cause the transmission distance to be greatly weakened.
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8.5 Software Programming

The core of the module is EFR32, the module's driving mode is exactly the same as EFR32. Users can operate according to with
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the EFR32 chip manual (see the EFR32 manual for more details).
Burning program: The module is SOC module, with GPIO port. J-link Downloader is used for programming download.
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Program download interface definition:
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Copyright ©2012–2019, Chengdu Ebyte Electronic Technology Co.,Ltd.
Pin J-LINK interface
VCC VCC
PF0 SWCLK
PF1 SWDIO
GND GND
E180-ZG120A User Manual
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