Rise and Fall time specifications for SCL and SDA lines of I2C

Answer:

Question: What are the Rise and Fall time specifications for SCL and SDA lines of I2C communication in PSoC device?

Response: The PSoC is fully compliant to the Philips I2C bus standard which may be downloaded from the below link. 

 http://www.nxp.com/acrobat_download/literature/9398/39340011.pdf

The following table shows the rise and fall time specifications for both SCL and SDA lines in both Full speed and Standard speed of operation.

 

                                                                                                           
   

     Parameter

  
   

     Standard mode(100KHz)

  
   

     Fast Mode(400KHz)

  
   

     Unit

  
   

     Min

  
   

     Max

  
   

     Min

  
   

     Max

  
   

     Rise Time(for both SCL and SDA)

  
   

     _

  
   

     1000

  
   

     20+0.1Cb*

  
   

     300

  
   

     ns

  
   

     Fall Time(for both SCL and SDA)

  
   

     _

  
   

     300

  
   

     20+0.1Cb*

  
   

     300

  
   

     ns

  

 

*Cb -> Total capacitance of one bus line in pF.