User's Manual

GSM/GPRS/GNSS Module Series
MC20 Hardware Design
MC20_Hardware_Design Confidential / Released 47 / 95
Figure 16: Reference Design for Full-Function UART
Three-line connection is shown as below.
Figure 17: Reference Design for UART Port (Three Line Connection)
A reference design for UART Port with hardware flow control is shown as below. The connection will
enhance the reliability of the mass data communication.