SPRUIV7C May 2022 – November 2025 AM620-Q1 , AM623 , AM625 , AM625-Q1 , AM625SIP
The RS-485 network physical layer consists of two-wire differential bus, usually twisted pair. External RS-485 transceiver IC is needed to access a RS-485 bus by the RS-485 mode. Figure 12-91 shows an example connection of an UART instance in RS-485 mode.