LX2082A I2C port falling edge is too fast to meet I2C standard at 400KHz

cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 

LX2082A I2C port falling edge is too fast to meet I2C standard at 400KHz

28 Views
Karl4
Contributor I

Hello,

I have a design that uses the LX2082A. The I2C interface is currently running at 100KHz. At this speed, I'm measuring signal fall times of less than 1ns(measuring 70% to 30%) coming from the processor. If I want to use this interface at 400KHz, the I2C spec requires a minimum fall time of 20*VIO/5.5. I have a 1.8V processor, so 20*1.8/5.5 is about 6.5ns. Is there a way to increase the fall time so the I2C interface complies with the I2C specification at 400KHz?

 

Karl

 

 

0 Kudos
Reply
0 Replies