Apple Authentication 3.0 Coprocessor I2C communication rate

Question

Level 1

4 points

Apple Authentication 3.0 Coprocessor I2C communication rate

I have a project here that uses Apple Authentication 3.0 Coprocessor. The current communication rate of I2C is 400KHZ. As it needs to be compatible with other peripherals, I plan to reduce the communication rate to 100KHZ. Could you please evaluate whether it will have an impact on actual use? thank you.

Posted on Oct 16, 2025 11:57 PM

Reply

Answer 1

Allan Jones

Level 9

77,162 points

Oct 17, 2025 12:49 PM in response to zhilingtian

You are addressing other consumer end user here, not Apple not developers. We have no ability to evaluate performance

Apple moved their developer forums to this location. Suggest you sign up and ask there:

Apple Developer Forums

Reply