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HEMANTH.S
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November 29, 2023
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Input pin capacitance of ASM330LHH

  • November 29, 2023
  • 1 reply
  • 1021 views

Hi Team,

I would like to know the input capacitance for the pins (specifically for I2C pins) of the ASM330LHH IMU sensor.

HEMANTHS_0-1701255996251.png

 

    This topic has been closed for replies.
    Best answer by Federica Bossi

    Hi @HEMANTH.S ,

     

    We don't provide the exact value but certainly it must not exceed the specification capacity limits found in the literature, for example in this document.

    However, it is not recommended to put capacitances on the I2C lines. Indeed, the capacitance creates with the resistor an RC filter which attenuates the clock front, and by increasing the capacitance, the clock may no longer a square wave, and the I2C stops working.

    If my reply answered your question, please click on Accept as Solution at the bottom of this post. This will help other users with the same issue to find the answer faster

    1 reply

    F
    Federica BossiAnswer
    Technical Moderator
    December 1, 2023

    Hi @HEMANTH.S ,

     

    We don't provide the exact value but certainly it must not exceed the specification capacity limits found in the literature, for example in this document.

    However, it is not recommended to put capacitances on the I2C lines. Indeed, the capacitance creates with the resistor an RC filter which attenuates the clock front, and by increasing the capacitance, the clock may no longer a square wave, and the I2C stops working.

    If my reply answered your question, please click on Accept as Solution at the bottom of this post. This will help other users with the same issue to find the answer faster

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