Users Manual

RF-WM-10AFB1
www.szrfstar.com Ver1.0 - Jan., 2020
Shenzhen RF-star Technology Co., Ltd. Page 17 of 25
4.5 Download and Debug Interface
Figure 9. Download and Debug Interface of RF-WM-11AFB1
Regarding the download and debugging methods of the module, please cooperate with the RF-DK-871xB1
development board provided by RF-star. For related information, please refer to the "RF-DK-871xB1 development
board user manual".
4.6 Basic Operation of Hardware Design
1. It is recommended to offer the module with a DC stabilized power supply, a tiny power supply ripple coefficient, and
the reliable ground. Please pay attention to the correct connection between the positive and negative poles of the
power supply. Otherwise, the reverse connection may cause permanent damage to the module;
2. Please ensure the supply voltage is between the recommended values. The module will be permanently damaged
if the voltage exceeds the maximum value. Please ensure the stable power supply and no frequently fluctuated
voltage.
3. When designing the power supply circuit for the module, it is recommended to reserve more than 30% of the
margin, which is beneficial to the long-term stable operation of the whole machine. The module should be far away
from the power electromagnetic, transformer, high-frequency wiring, and other parts with large electromagnetic
interference.
4. The bottom of the module should avoid high-frequency digital routing, high-frequency analog routing, and power
routing. If it has to route the wire on the bottom of the module, for example, it is assumed that the module is
soldered to the Top Layer, the copper must be spread on the connection part of the top layer and the module, and
be close to the digital part of the module and routed in the Bottom Layer (all copper is well-grounded).