This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

WIDELY USED I2C

hi,

may I know which is the widely used I2C mode among sm, fm, fm+, Hsm, Ufm in industry.

  • This all depends on the application, but in my experience working mostly with enterprise computing (e.g. servers) and communications infrastructure:

    SM, Standard mode (100 kHz) is the most common simply because lower speeds are more reliable.

    FM, Fast-mode (400 kHz) is also very common in architectures where all masters and slaves are made specifically for I2C, as opposed to a "bit-banging" approach.

    FM+, Fast-mode+ (1MHz) is not very common but is starting to be adopted.

     HSM, High-speed mode, is rare and I have never worked with it.

    UFM, ultra-fast mode, is also very rare and is for uni-directional data transfer only.

  • yeah, thank you