Datasheet

Pinouts

Unlike most of our breakouts, this sensor has the detection element on the bottom of the PCB, so we expect you to

solder it 'upside down' with the sensor package on the bottom and the port on top!

Power Pins

3V - this is the power in pin. Technically it can be powered from as low as 1.6V to 3.6V but you'll need to make

sure your logic level matches!

GND - power and data ground

I2S Data Pins

BCLK - the bit clock, also known as the data clock or just 'clock' - comes from the I2S master to tell the

microphone its time to transmit data. This should run at 2-4 MHz but we've found you can often run it a little

slower and it'll work fine

DOUT - the data output from the mic!

LRCLK - the left/right clock, also known as WS (word select), this tells the mic when to start transmitting. When

the LRCLK is low, the left channel will transmit. When LRCLK is high, the right channel will transmit.

SEL - the channel select pin. By default this pin is low, so that it will transmit on the left channel mono. If you

connect this to high logic voltage, the microphone will instantly start transmitting on the right channel.