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TM4C123BE6PZ: I2C clock duty cycle

Part Number: TM4C123BE6PZ

Lenovo hardware EA want to know why I2C clock duty cycle is about low 60%, high 40% in TM4C123B.

Seems it is fixed value in MCU specification under low speed mode.

Our datasheet described as below:

"SCL_LP is the low phase of SCL (fixed at 6)"
"SCL_HP is the high phase of SCL (fixed at 4)"

 

Can you help to share some information for this signal?

Because they expected it should be low 50%, high 50%. Thanks!