Product Parameters
Working Voltage: 3.3V/5V
Control Chip: TCS3472XFN
Logic Voltage: 3.3V/5V
Communication Interface: I2C
VIN: 3.3V/5V Power+
GND: Power Ground-
3V3: 3.3V
SCL: 12C clock input
SDA: 12C data input
INT: Interrupt output (open drain output)
LED: Light Emitting Diode

12C Communication:
1 data line, 1 clock line.
There are three types of signals in the I2C bus in the process of transmitting data: start signal, end signal and response signal.
Start Signal: When SCL is high level, SDA transitions from high level to low level, and starts to transmit data.
End Signal: When SCL is at high level, SDA transitions from low level to high level, ending the transmission of data.
Response Signal: After receiving the 8bit data, the IC that receives the data sends a specific low-level pulse to the IC that sends the data, indicating that the data has been received I2C write timing.