User's Manual

February 2017
DocID0xxxxx Rev 0.xx 13/27
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change
without notice. ww w.st.com
3.2 Typical application circuits
In a typical application circuit, SPSGPE is connected to a host microcontroller unit through a standard
UART to transmit and receive signals. This application is pictured in Figure 2.
Figure 2. Typical application circuit of SPSGPE connected to a host microcontroller.
Please notice that “USB / RTS” could be left floating if USB is supported by firmware.
In another typical application circuit, SPSGPE is connected to a host computer through a standard USB
connector. This application is pictured in Figure 3.
Figure 3. Typical application circuit of SPSGPE connected to a host computer via USB.