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XR88C681 Datasheet CMOS DUAL CHANNEL UART

Manufacturer: Exar (now MaxLinear)

General Description

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 interrupt driven environment.

The XR88C681 device offers a single IC solution for the 8080/85, 8086/88, Z80, Z8000, 68xx and 65xx microprocessor families.

Overview

XR88C681 CMOS Dual Channel UART (DUART).

Key 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 Transmitter and Receiver D External Clock Capability D Maximum Bit Rate: 1X Clock - 1Mb/s, 16X Clock - 125kb/s D Normal,.