Smart Machine Smart Decision
SIM5320JE-TE_Hardware Design_V1.01
2012-07-10
28
3.3
UART Interface
SIM5320JE-TE provides a UART (universal
asynchronous serial transmission) port. It consists of a
flexible 7-wire serial interface. The module is as the DCE (Data Communication Equipment) and the client
PC is as the DTE (Data Terminal Equipment). AT commands are entered and serial communication is
performed through UART interface. The application circuit is in the following figures.
Figure
19
: Full modem
Figure
20
: Null modem
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