Left is the Master (sender), right is the Slave (receiver). The waveform below shows the relation of SCL and SDA: data changes only during SCL low; START is SDA high→low when SCL is high; STOP is SDA low→high when SCL is high.
Received Binary:01100101
Grouped by 8 bits:01100101
To Hex:0x65
Note: data bits are prepared during SCL low and kept stable during SCL high; START/STOP correspond to SDA transitions while SCL is high.