Pmod RS232: Serial Converter and Interface Standard

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The Digilent Pmod RS232 converts between digital logic voltage levels to RS232 voltage levels using the Maxim Integrated MAX3232 transceiver. The RS232 module is configured as a data communications equipment (DCE) device. It connects to data terminal equipment (DTE) devices, such as the serial port on a PC, using a straight-through cable.

Note: There are two UART signal pin assignment conventions in use on Digilent products. This product uses the old signal assignment convention. Connecting a product using the old convention with one using the new convention requires the use of a UART Crossover Cable (not included). Click here for a more detailed explanation.

  • Maxim Integrated MAX3232 RS232 transceiver
  • Standard RS232 DB9 connector
  • Optional RTS and CTS handshaking functions
  • Small PCB size for flexible designs 1.0“ × 1.3” (2.5 cm × 3.3 cm)
  • 6-pin Pmod connector with UART interface
  • Follows Digilent Pmod Interface Specification Type 3
  • Example code available in resource center
  • Pmod RS232
  • Custom antistatic Pmod packaging

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  • 4
    Works as expected

    Posted by Digilent Customer on 8th Oct 2019

    Table for the jumper location is typo'd on the datasheet - for 5 wire connections it should say "JP1 Pin 1 connected to JP2 Pin1 with a jumper and JP1 Pin 2 connected to JP2 Pin 2". It specifies this in the paragraph below the table.

  • 2
    Pinout is incompatible with the myRIO Pmod Adapter

    Posted by Todd Cazallis on 19th Nov 2017

    Not much more to say. I haven't used the PmodRS232 yet because I'm waiting for cables to connect it to my myRIO adapter but I'm sure the module will work fine anyway.