What effect does the data rate have in the EzI2C component?

[HuEl_264296]

Hi,

       

The EZI2C component has an option for choosing a data rate. Since this is a slave device, it doesn't generate a clock output. So what difference does it make to choose different data rates? What is the advantage of choosing a low data rate? Why not just always choose the maximum?

       

Hugo

[ETRO_SSN583]

I would posit it sets thebit/packet timing Slave uses to generate

   

responses to Master. Also to handle clock streteching if needed.

       

Regards, Dana.

[HeLi_263931]

It also affects the clocks defined by the (internally used) I2C component. The data rate defines an over-sampling rate (32 for 50kHz, 16 otherwise), which in turn defines the clock needed by the component.