The ST16C554DCJ is a Quad Universal Asynchronous Receiver/Transmitter (UART) with a range of advanced features. Manufactured by Exar Corporation, this UART is designed to provide flexible and efficient serial communication for a variety of applications. It integrates four independent UART channels into a single chip, offering space-saving and cost-effective solution for systems requiring multiple serial interfaces.

Applications

  
• Serial communication in embedded systems
  
• Multi-port serial cards
  
• Point-of-sale (POS) systems
  
• Industrial automation and control
  
• Data acquisition systems

Features

  
• Four independent UART channels
  
• Data rates up to 3 Mbps
  
• 64-byte transmit and receive FIFOs per channel
  
• Automatic hardware and software flow control
  
• Programmable baud rate generator

Benefits

  
• Reduced system cost and complexity by integrating four UARTs in one package
  
• Improved system performance with high data rates and large FIFOs
  
• Enhanced data reliability through automatic flow control
  
• Flexible baud rate selection to suit various communication requirements
  
• Easy integration with various microcontrollers and processors

Additional Details

The ST16C554DCJ operates with a single 3.3V or 5V power supply. It supports various serial communication protocols, including RS-232, RS-485, and RS-422. The device is available in a variety of packages, including a 68-pin PLCC. The large transmit and receive FIFOs help to reduce CPU overhead by buffering data, allowing the processor to handle other tasks while data is being transferred. The automatic flow control feature prevents data loss by automatically stopping and starting data transmission based on buffer availability. This UART is a reliable and versatile solution for serial communication needs.

The ST16C554DCJ also includes features such as break character generation and detection, loopback mode for testing, and interrupt generation for various events, such as data received, transmit buffer empty, and error conditions. These features further enhance the flexibility and usability of the device in different applications.