Ebyte E83-2G4M03S, Руководство пользователя

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Chengdu Ebyte Electronic Technology Co., Ltd. E83-2G4M03S User Manual
Copyright © 2002 , Chengdu Ebyte Electronic Technology Co., Ltd.
11
5 Developer Notes
5.1
Hardware design and circuit schematic

It is recommended to use a DC regulated power supply to supply power to the module, the
power supply ripple coefficient should be as small as possible, and the module should be reliably
grounded;

Please pay attention to the correct connection of the positive and negative poles of the power
supply, such as reverse connection may cause permanent damage to the module;

Please check the power supply to ensure that it is between the recommended supply voltages, if
exceeding the maximum value will cause permanent damage to the module;

Please check the stability of the power supply, the voltage should not fluctuate greatly and
frequently;

When designing the power supply circuit for the module, it is often recommended to reserve
more than 30% of the margin, so that the whole machine can work stably for a long time;

The module should be kept away from parts with large electromagnetic interference such as
power supply, transformer, and high-frequency wiring as far as possible;

High-frequency digital traces, high-frequency analog traces, and power traces must be avoided
under the module. If it is absolutely necessary to pass under the module, assuming that the
module is soldered on the Top Layer, the top layer of the contact part of the module should be