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I²C device

AHT20 Temp/Humidity

The AHT20 Temp/Humidity is an I²C device in the LabWired part catalog. Its catalog type is aht20. It connects to the MCU over I²C at the default address 0x38. The catalog gives a supply range of 2–5.5 V. It has 4 pins. A registered peripheral model runs in the engine: the firmware talks to it over the real bus and gets device-accurate responses.

Key facts

CategoryI²C devices
Catalog typeaht20
InterfaceI²C
Default I²C address0x38 (56 decimal)
Supply range2–5.5 V
Pins4
DatasheetASAIR AHT20 humidity and temperature sensor datasheet

What LabWired simulates

What is simulated

Simulated device model

How it was validated

Built from the datasheet. Implemented from the part’s register documentation and exercised by automated tests. Nothing physical was ever placed next to it.

AHT20 Temp/Humidity pinout

PinElectrical typeFunction
VCC Power input Supply
GND Power input Supply
SDA Open-drain I²C data (SDA)
SCL Open-drain I²C clock (SCL)

How to simulate the AHT20 Temp/Humidity in LabWired

  1. Open the Playground at app.labwired.com and place an MCU board.
  2. Add the AHT20 Temp/Humidity (catalog type aht20).
  3. Connect VCC and GND to the supply and ground of the board. Use a supply inside the catalog range of 2–5.5 V.
  4. Connect SDA and SCL to the I²C data and clock pins of the board.
  5. Run the firmware. It finds the part on the I²C bus at 0x38 and reads and writes it as on hardware.

Related I²C devices

All I²C devices · All parts

Further reading

Modelled from ASAIR AHT20 humidity and temperature sensor datasheet.

Wire it up in Playground → See the full validation matrix