Quectel M35 - Figure 18: Reference Design for Uart Port

GSM/GPRS Module Series
M35 User Manual
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Three-line connection is shown as below.
TXD
RXD
GND
UART port
RTS
0R
TXD
RXD
GND
Module (DCE)
Host (DTE)
Controller
Figure 18: Reference Design for UART Port
UART Port with hardware flow control is shown as below. This connection will enhance the reliability of
the mass data communication.
RTS
CTS
RTS
CTS
GND
RXD
TXD TXD
RXD
GND
Module (DCE)
Host (DTE)
Controller
Figure 19: Reference Design for UART Port with Hardware Flow Control