The ST16C552ACJ is a dual universal asynchronous receiver/transmitter (UART) from Exar Corporation. This device provides two independent serial communication channels, enabling asynchronous data transmission and reception. It is commonly used in computer systems, communication devices, and industrial equipment to facilitate serial communication.

Applications

  
• Computer Serial Ports
  
• Modems
  
• Printers
  
• Industrial Control Systems
  
• Embedded Systems

Features

  
• Dual UART channels.
  
• Data rates up to 1.5 Mbps.
  
• 16-byte FIFO transmit and receive buffers per channel.
  
• Programmable baud rate generator.
  
• Modem control signals.
  
• Interrupt generation.
  
• RS-232 compatibility.

Benefits

  
• Two independent serial communication channels in a single device.
  
• High-speed data transfer.
  
• Reduced CPU overhead with FIFO buffers.
  
• Flexible baud rate selection.
  
• Support for modem control functions.
  
• Easy integration with interrupt-driven systems.
  
• Compatibility with standard RS-232 interfaces.

Additional Details

The ST16C552ACJ provides two independent UART channels, each with its own set of registers and control signals. The 16-byte FIFO transmit and receive buffers reduce CPU overhead by allowing the UART to handle data transfers in bursts. The programmable baud rate generator allows for selecting a wide range of baud rates. The modem control signals enable the UART to interface with modems and other communication devices. The interrupt generation feature allows the UART to signal the CPU when data is received or when a transmission is complete.

The device is typically available in a surface-mount package, facilitating easy integration into electronic devices. It is designed to operate with a 3.3V or 5V power supply. Exar provides a comprehensive set of documentation and software drivers to support the ST16C552ACJ.