5 V, 3.3 V and 2.5 V Dual UART, 5 Mbit/s (max.), with 16 B FIFOs

SC16C2550B

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Features

  • 2 channel UART
  • 5 V, 3.3 V and 2.5 V operation
  • 5 V tolerant on input only pins
  • Industrial temperature range
  • Pin and functionally compatible to 16C2450 and software compatible with INS8250, SC16C550
  • Up to 5 Mbit/s data rate at 5 V and 3.3 V and 3 Mbit/s at 2.5 V
  • 16-byte transmit FIFO to reduce the bandwidth requirement of the external CPU
  • 16-byte receive FIFO with error flags to reduce the bandwidth requirement of the external CPU
  • Independent transmit and receive UART control
  • Four selectable Receive FIFO interrupt trigger levels
  • Software selectable baud rate generator
  • Standard asynchronous error and framing bits (Start, Stop and Parity Overrun Break)
  • Transmit, Receive, Line Status and Data Set interrupts independently controlled
  • Fully programmable character formatting:
    • 5-bit, 6-bit, 7-bit or 8-bit characters
    • Even, odd or no-parity formats
    • 1, 1 1/2 or 2-stop bit
    • Baud generation (DC to 5 Mbit/s)
  • False start-bit detection
  • Complete status reporting capabilities
  • 3-state output TTL drive capabilities for bidirectional data bus and control bus
  • Line break generation and detection
  • Internal diagnostic capabilities:
    • Loopback controls for communications link fault isolation
  • Prioritized interrupt system controls
  • Modem control functions (CTS, RTS, DSR, DTR, RI, DCD)

Design Resources

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