LP5562: rise time and fall time of I2C

hills Liu

Part Number: LP5562

Hi,

Customer has a question about the rise time and fall time of I2C. In datasheet, the max rise time and fall time is 300ns, but didn't show how do we test the rise time and fall time. commonly, 10%~90% is used or VIL to VIH. Could you please confirm this? in customer's use case, if 10~90% is used, then 300ns can't meet.

over 4 years ago

0 Aaron Bing over 4 years ago

TI__Expert 4160 points

Hi Hills,

I can confirm that 10%~90% is commonly used to evaluate the I2C rise/fall time. Could you provide some screenshots of I2C waveforms you got (which surpasses 300ns in 10%~90% region) and some additional details on what MCU you used to generate SCL/SDA signals?

Best Regards,

Aaron Bing