Can an FT232RL drive multiple Atmel ATMEGA2560 uController's?

Discussion in 'The Projects Forum' started by Cory Foss, Jan 13, 2015.

  1. Cory Foss

    Thread Starter New Member

    Jan 13, 2015
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    I want to send one serial command to multiple chips rather than using the secondary UART's on the 2560 to control the other's (easier from a programming stand point). Can the FTDI FT232RL support multiple devices connected to its TX line (Pin 1)?
    Thanks
     
  2. tshuck

    Well-Known Member

    Oct 18, 2012
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    Provided you don't exceed the fanout, I don't see a reason it wouldn't be able to.
     
  3. JWHassler

    Member

    Sep 25, 2013
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    Yes, as long as none/one of them talks back
     
  4. Cory Foss

    Thread Starter New Member

    Jan 13, 2015
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    Yes only one will be replying to the FT232. Thanks for the replies.
     
  5. tshuck

    Well-Known Member

    Oct 18, 2012
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    Careful, you asked about multiple devices listening, nothing about a response from the listeners...

    Are you planning to only have one device physically connected to Rx on the FT232?
     
  6. Cory Foss

    Thread Starter New Member

    Jan 13, 2015
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    All 2560's will receive data via the TX line, but only one 2560 will be connected back to the RX Line of the FT232.
     
  7. tshuck

    Well-Known Member

    Oct 18, 2012
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    Okay, that should be fine.

    Make sure there is only one driver driving the lines.
    .
     
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