An I²C slave is allowed to hold down the clock if it needs to reduce the bus speed. The master on the other hand is required to read back the clock signal after releasing it to high state and wait until the line has actually gone high.
An I²C slave is allowed to hold down the clock if it needs to reduce the bus speed. The master onthe other hand is required to read back the clock signal after releasing it to high state and waituntil the line has actually gone high.