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Version 1.0 – D1 – May 2020

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3 Pin-Out Diagram

Pin

Comments

VDD

Supply Voltage

GND

Ground

TX/

SCL

Modbus: Transmission line (Push/Pull with 3V level)

to 3V, for higher voltages a level shifter is needed)

RX/

SDA

Modbus: Receive line (Input must not exceed 5.5V)

to 3V, for higher voltages a level shifter is needed)

RDY

Data ready pin. High when data is ready for read-out

PWM

SEL

Interface select pin. Pull to VDD (do not exceed 4V, use

voltage divider in case your VDD is >4V) for selecting

Modbus, leave floating or connect to GND for selecting

Figure 2: Pin-out of the SCD30.

4 Operation and Communication

Communication lines for I2C have an internal pull-up (45kOhm) to 3V, for higher voltages a level shifter is needed.

Check VIH level of your I2C master to determine communication voltage. Please visit the download center of Sensirion

5 Shipping Package

SCD30 sensor is shipped in stackable trays with 40 pieces each. The tray dimension is 363 mm x 257 mm x 19 mm.

Stacking of trays results in an effective tray height of 13 mm.

6 Ordering Information

SCD30 and accessory can be ordered via the following article numbers.

Product

Description

Article Number

SCD30 sensor

1-101625-10

SEK-SCD30-Sensor

Standalone SCD30 sensor for EvalKit

3.000.061

SEK-SensorBridge

Sensor Bridge to connect SEK-SCD30-Sensor to computer

3.000.124

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www.sensirion.com/file/scd30_interface_description