User Manual

Chengdu Ebyte Electronic Technology Co., Ltd. E18-2G4U04B User Manual

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 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 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) 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 of damage)；

 Try to stay away from some physical layers such as TTL protocol at 2.4GHz , for example: USB3.0；

 The mounting structure of antenna 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；

 The antenna must not be installed inside the metal case, which will cause the transmission distance to be

greatly weakened.

6.2 Software editing

 The core of this module is CC2531, and its driving method is completely equivalent to CC2531. Users can

operate according to the CC2531 chip manual (see CC2531 manual for details);

 It is recommended to use the Code Composer Studio (CCS) Integrated Development Environment (IDE)

for wireless connectivity.

 Code Composer Studio is an integrated development environment (IDE) that supports TI's

microcontrollers and embedded processors. Code Composer Studio consists of a complete set of tools for

developing and debugging embedded applications. It includes a C/C++ compiler for optimization, a source

code editor, a project build environment, a debugger, a descriptor, etc. The intuitive IDE provides a single

user interface to help you with every step of the application development process. Familiar tools and

interfaces allow users to get started much faster. Code Composer Studio combines the benefits of the

Eclipse software framework with TI's advanced embedded debugging capabilities to provide embedded

developers with a compelling, feature-rich development environment.

 Re-initialize the register configuration when the chip is idle for higher stability.