This design, based on a Maxim MAX220 RS-232 driver/receiver IC, allows you to increase the number of USARTs (universal synchronous, asynchronous receiver/transmitters) available ...

The RX23E-A RSSK brings together hardware, software, and tools optimized for evaluating the MCU’s high-precision 24-bit delta-sigma (ΔΣ) A/D converter with industry-leading accuracy.

RS-485 bus collisions can thereby be easily detected by confirming that every character received matches what was sent. 5. Circuit diagram of RS-485 transceiver with automatic direction control.