ACCES I/O Products (San Diego, CA) announces the release of a new USB serial interface board—the ANDROID-232. Users can now control legacy RS-232 devices directly from modern Android devices. The ANDROID-232 uses the Android Open Accessory protocol to convince an Android device that its onboard USB port (normally limited to USB "slave" or "OTG" modes) is actually an RS-232 port. This two-way data port allows external hardware to control the Android unit or for the Android unit to control external hardware. Features include:

  • Serial data up to 921.6kbps is supported (a max of 115.2kbps without flow control).
  • Industrial temperature operation (-40°C to 85°C).
  • Android USB 2.0 Full-Speed Host to industry standard RS-232 DB9M serial port.
  • Supports UART interface with RX, TX, RTS and CTS.
  • RX buffer size 5512 bytes; TX buffer size 256 bytes.
  • Support for baud rates up to 460.8kbps, 921.6kbps optional.
  • ±15kV ESD protection on USB data lines and all RS-232 signals.


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