36.5.2 USART Features

The USART features are as follows:

  • Full-duplex Operation
  • Asynchronous (with Clock Reconstruction) or Synchronous Operation
  • Internal or External Clock source for Asynchronous and Synchronous Operation
  • Baud Rate Generator (BRG)
  • Supports Serial Frames with 5, 6, 7, 8, or 9 Data bits and 1 or 2 Stop bits
  • Odd or Even Parity Generation and Parity Check
  • Selectable LSB or MSB first Data Transfer
  • Buffer Overflow and Frame Error Detection
  • Noise Filtering, Including False Start bit Detection and Digital Low-Pass Filter
  • Collision Detection
  • Can Operate in all Sleep modes
  • Operation at Speeds up to Half the System Clock for Internally Generated Clocks
  • Operation at Speeds up to the System Clock for Externally Generated Clocks
  • RTS and CTS Flow Control
  • LIN Host Support

  • LIN Client Support

  • RS485 support
  • Start-of-frame (SOF) detection
  • Up to 16-byte Receive FIFO with FIFO enabled
  • Up to 16-byte Transmit FIFO with FIFO enabled
  • 32-bit Extension for Better System Bus Utilization