How can i use the Braswell I2C Interface?

Discussion in 'UDOO X86' started by Chris Scharnagl, Oct 26, 2017.

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  1. Chris Scharnagl

    Chris Scharnagl New Member

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    I can't find any solution to use the I2C Interface? Has anyone experience with it or what level shifter is the right one? Is the 74LVC245A the right one? The goal is to communicate with 3V3-device.
     
  2. ccs_hello

    ccs_hello UDOOer

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    Buy TXS0108e based modules (from eBay)
    A side: 1.8V, B side: 3.3V.
     
    Last edited: Oct 26, 2017
  3. waltervl

    waltervl UDOOer

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  4. ccs_hello

    ccs_hello UDOOer

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    Not that one. I2C has pull up resistors and TXS10x is designed for that.
     
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  5. waltervl

    waltervl UDOOer

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    Good to know, still learning every day...
     
  6. jas-mx

    jas-mx Active Member

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    My experience with boards using TXS0108E as level shifter hasn't been very good for I2C communications, spent many hours debugging the issue, low capacitance tolerance at high data rates. I would suggest trying a board with the PCA9306 which is designed for I2C/SMBus which you can also find on ebay.
     
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