M77N – Quad RS232/RS422/RS485 UART

Features

  • 4 individual configurable UART channels
  • Supported Operation Modes
    • RS422 half-duplex
    • RS422 full-duplex
    • RS485 half-duplex
    • RS485 full-duplex
    • RS232
  • 128-byte FIFO for each transmitter and receiver
  • All 4 channels with 4 lines (no handshake lines)
  • All 4 channels electrically isolated from the system and from each other

Technical Data

4 UART controllers
  • Four independent full-duplex asynchronous high-performance UART channels
  • Four isolated groups, optical isolation
  • Software-configurable as RS232/RS422/RS485
  • 128-byte FIFO for each transmitter and receiver
  • UARTs fully software compatible with industry standard 16C55x type UARTs
  • Data rates up to 2 Mbit/s
  • Automated in-band flow control using programmable Xon/Xoff characters, in both directions
  • 5-, 6-, 7-, 8- and 9-bits data framing
  • Independent channel reset by software
  • Transmitter and receiver can be disabled
Galvanic isolation
  • Optically isolated from the system and from each other
Connector
  • 25-pin D-Sub connector (female)

  • Emulating sensors with serial interfaces to ECUs
  • Developing application specific serial protocols
  • Controlling actuators