XR88C681 Datasheet (Exar Corporation) - CMOS DUAL CHANNEL UART

XR88C681, CMOS DUAL CHANNEL UART

The EXAR Dual Universal Asynchronous Receiver and Transmitter (DUART) is a data communications device that provides two fully independent full duplex asynchronous communication channels in a single package.

The DUART is designed for use in microprocessor based systems and may be used in a polled or

XR88C681 Features

* D Two Full Duplex, Independent Channels D Asynchronous Receiver and Transmitter D Quadruple-Buffered Receivers and Dual Buffered Transmitters D Programmable Stop Bits in 1/16 Bit Increments D Internal Bit Rate Generators with More than 23 Bit Rates D Independent Bit Rate Selection for Each Transmitt