The ST16C654CQ is a quad universal asynchronous receiver/transmitter (UART) with a 16-byte FIFO, manufactured by Exar Corporation. It is designed to provide flexible and reliable serial communication for a variety of applications.

Applications

  
• Serial communication ports
  
• Embedded systems
  
• Industrial automation
  
• Networking equipment
  
• Multi-port serial cards

Features

  
• Four independent UART channels
  
• 16-byte FIFO for each channel
  
• Data rates up to 5 Mbps
  
• Software-compatible with 16C550 UART
  
• Automatic hardware/software flow control
  
• Programmable baud rate generator
  
• Interrupt identification
  
• Low power operation

Benefits

  
• High Performance: Supports data rates up to 5 Mbps for high-speed serial communication.
  
• Flexible Configuration: Four independent UART channels provide flexibility for multi-port applications.
  
• Reliable Data Transfer: 16-byte FIFO helps prevent data loss during high-speed communication.
  
• Easy Integration: Software-compatible with 16C550 UART, simplifying integration into existing systems.
  
• Enhanced Flow Control: Automatic hardware/software flow control ensures reliable data transfer in various environments.
  
• Reduced Power Consumption: Low power operation extends battery life in portable applications.

Technical Specifications

The ST16C654CQ operates from a single power supply voltage and supports a wide range of baud rates. Each UART channel features a 16-byte FIFO to minimize CPU intervention. The device supports various interrupt modes and provides interrupt identification for efficient interrupt handling. Detailed specifications regarding timing parameters, voltage levels, and power consumption are available in the product datasheet. The device is packaged in a QFP package for easy mounting and connection. It is designed to comply with relevant industry standards for serial communication.