Datasheet

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PmodRS232™ Reference Manual
Revised May 24, 2016
This manual applies to the PmodRS232 rev. B
DOC#: 502-068
Copyright Digilent, Inc. All rights reserved.
Other product and company names mentioned may be trademarks of their respective owners.
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Overview
The Digilent PmodRS232 converts between digital logic voltage levels to RS232 voltage levels. 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.
1 Functional Description
The PmodRS232 utilizes the Maxim Integrated MAX3232 transceiver to allow the system board to communicate
with UART compatible devices or other components that use a serial interface.
2 Interfacing with the Pmod
The PmodRS232 communicates with the host board via the UART protocol. The arrangement of the pins is the
the old UART communication style so that a crossover cable will be required if attaching this Pmod to one of the
dedicated UART Pmod headers on a Digilent system board.
The PmodRS232.
 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
 Example code available in resource center
Features include: