USR-K5 Integration Guide
Technical Support:
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Jinan USR IOT Technology Limited
www.usriot.com
5. Hardware reference design
5.1.
Hardware connections are typically applied, as shown in figure 5
Figure5 USR-K5 Hardware connection
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explain
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：
When designing hardware connection, customers need to pay attention to:
1.RST: module reset signal, input. Active low level, with 10K resistor inside the module pulling up to 3.3v.
When the module is powered on or fails, the MCU needs to reset the module, pull it down at least 300ms and
then pull it up.
2.TXD/RXD: serial data transceiver signal. Internally connected with a pull up resistance of 10K.
5.2.
power interface
Usr-k5 is powered by 3.3v, and the working current is [email protected]. Pin 11 is the power supply pin 3.3v. It
can be connected to 10UF/6V3/10% and 100nF/50V/10% bypass patch capacitor stability module. See
figure6