Jinan USR IOT Technology Limited 6 / 9
2. Hardware Design
2.1.
Typical Connection
Figure 4 Typical connection
2.2.
Power Interface
Switching power supply is recommended. Working voltage VCC range from 3.0V~3.6V, 3.3V is
recommended. Power the module by main power pin, pin interface is in parallel with appropriate
energy-storage capacitance and high frequency capacitance. Circuit diagram as follows:
Figure 5 Power interface