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Product short description:
  • 8 asynchronous full duplex EIA/TIA-422B serial ports (supports EIA-485)
  • 64-byte FIFO buffers
  • Interrupt support
  • Programmable baud rate (up to 1.8432Mbps)

These modules provide eight asynchronous serial communication ports from a single PMC Socket. Software-configuration helps you quickly set baud rates, character-sizes, stop bits, and parity.

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For more efficient data processing, each serial port is equipped with 64-character FIFO buffers on the transmit and receive lines.

The data ports generate individually controlled transmit, receive, line status, data set, and flow control interrupts. A global interrupt source register provides interrupt status indication for all eight channels to speed up interrrupt parsing.

  • Eight asynchronous, full duplex EIA/TIA-422B serial ports (supports EIA-485)
  • 64-byte transmit FIFO buffers
  • 64-byte receive FIFO buffers
  • Programmable baud rate (up to 1.8432Mbps)
  • Line-break and false start-bit detection
  • Failsafe receivers
  • Socketed termination and bias resistors
  • Industry-standard software-compatible 16C550 configuration registers
  • 0 to 70°C (PMC521-64) or -40 to 85°C (PMC521-64E)

Additional information

Weight 16 oz
Dimensions 12 × 13 in
Part Number

PMC521: front I/O connector, PMC521E: front I/O connector, extended temp. range, PMC521R: rear I/O connector, PMC521RE: rear I/O connector, extended temp. range

  • Description

    For more efficient data processing, each serial port is equipped with 64-character FIFO buffers on the transmit and receive lines.

    The data ports generate individually controlled transmit, receive, line status, data set, and flow control interrupts. A global interrupt source register provides interrupt status indication for all eight channels to speed up interrrupt parsing.

  • Features & Benefits

    • Eight asynchronous, full duplex EIA/TIA-422B serial ports (supports EIA-485)
    • 64-byte transmit FIFO buffers
    • 64-byte receive FIFO buffers
    • Programmable baud rate (up to 1.8432Mbps)
    • Line-break and false start-bit detection
    • Failsafe receivers
    • Socketed termination and bias resistors
    • Industry-standard software-compatible 16C550 configuration registers
    • 0 to 70°C (PMC521-64) or -40 to 85°C (PMC521-64E)
  • Specs & Data Sheets

  • Additional information

    Additional information

    Weight 16 oz
    Dimensions 12 × 13 in
    Part Number

    PMC521: front I/O connector, PMC521E: front I/O connector, extended temp. range, PMC521R: rear I/O connector, PMC521RE: rear I/O connector, extended temp. range