Is i2c master limited to 400k ? - Is i2c master limited to 400k ? Hello, Is it that i2c master IP limited to 400k ? We need to use 1M i2c. Thanks Replies: Re: Is i2c master limited to 400k ? Hello, The i2c IP is limited to 400 kbit/s max. This can be seen here in page 165. This IP is not supporting 1M speed. thank you.