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  • Forum Post: SCL and SDA trace separation?

    Tim Baker
    Hi, For the two I2C bus traces, SCL and SDA, is there any requirement on their separation? Even in fast I2C mode which runs at 400KHz, it is still much slower than DDR2 memory, USB and many other high-speed devices. However, for DDR2, USB and SATA, there are specific requirements on routing...
    on Dec 21, 2011

  • Forum Post: SCL and SDA length difference?

    Tim Baker
    Hi, For SCL and SDA traces, is there any requirement on equal length? Assuming 400KHZ fast I2C mode, if by board routing constraints SCL and SDA traces cannot have equal length, how much could they differ in length? Tim
    on Dec 21, 2011

  • Forum Post: MSP430F2272 interfacing with Led controller TCA6507 via I2C

    Abdullah Ziya ARGILLI
    I have designed the circuit which can be found below, but my MSP430F2272 can't communicate with TCA6507. I'm using 5.6kOhm pullup resistors, the supply voltage of both ICs are 3.3V with same ground. I've also tried to add up 10kOhm pullup resistor (15k total) but nothing changed. When SDA...
    on Jan 21, 2012

  • Forum Post: TCA4311 not propagating ACK

    Vicent Perales
    Hi, I am experiencing an issue with the TCA4311 IC. The problem is that it does not propagate the ACK from the input to the output. I have attached a trace illustrating the issue. The green trace is the SDAIN, the pink one being the SDAOUT. Could anyone give me a hint on why this could be happening...
    on Mar 20, 2013

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