The XR88C681CJTR is a dual universal asynchronous receiver/transmitter (UART) with parallel interface from Exar Corporation. This device is designed to provide flexible and reliable serial communication capabilities in a variety of applications. It offers two independent UART channels, each capable of supporting asynchronous serial data transmission and reception.

Applications

• Industrial Control Systems
• Data Acquisition Systems
• Point-of-Sale (POS) Terminals
• Embedded Systems
• Serial Communication Interfaces

Features

• Dual UART Channels: Provides two independent serial communication channels.
• Parallel Interface: Simplifies integration with microprocessors and microcontrollers.
• Programmable Baud Rate Generator: Allows for flexible baud rate selection.
• FIFO Buffers: Enhances data handling and reduces CPU overhead.
• Interrupt Control: Provides interrupt-driven data transfer capabilities.
• Automatic Hardware/Software Flow Control: Supports reliable data transmission.

Benefits

• Versatile Serial Communication: Supports a wide range of serial communication protocols and baud rates.
• Easy Integration: Parallel interface simplifies connection to microprocessors and microcontrollers.
• Efficient Data Handling: FIFO buffers reduce CPU overhead and improve system performance.
• Reliable Data Transfer: Automatic flow control ensures reliable data transmission.
• Flexible Interrupt Control: Allows for efficient interrupt-driven data transfer.

Technical Specifications

The XR88C681CJTR features two independent UART channels, each with programmable baud rate generators. It supports data rates up to 5 Mbps. The device includes 16-byte FIFO buffers for both transmit and receive operations. It operates from a 5V power supply and is available in a 44-pin PLCC package. The XR88C681CJTR also supports various interrupt modes and automatic hardware/software flow control, making it suitable for a wide range of serial communication applications.