I2C Protocol :: Overview
Created: Oct 19, 2015
Updated: Apr 10, 2017
SVN: No files checked in
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I2C protocol is a 2-wire serial protocol. SDA and SCL are bi-directional wires.
start condition - SCL is high, SDA goes from high to low.
stop condition - SCL is high, SDA goes from low to high.
SDA must be stable when SCL is high for transmission of data.
Change of data on SDA allowed when SCL is low.
Standard mode - 100khz freq Fast mode - 400khz freq