This application report describes the implementation of a hardware/software universal asynchronous receiver tranmitter (UART) function on the MSP430x31x MSP430x32x and MSP430x33x families of 16-bit RISC-like mixed-signal processors using the integrated 8-bit interval timer/counter (8-bit T/C). The UART function described in this report is half-duplex event-driven and supports an 8N1 protocol u