SPI device

MAX31855 thermocouple

The MAX31855 thermocouple is an SPI device in the LabWired part catalog. Its catalog type is max31855. It connects to the MCU over SPI. It has 7 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

Category	SPI devices
Catalog type	`max31855`
Interface	SPI
Pins	7
Datasheet	Analog Devices MAX31855 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.

MAX31855 thermocouple pinout

Power: VCC, GND
SPI: CS, SCK, DO
Other signals: TC+, TC-

Pin	Electrical type	Function
`VCC`	Power input	Supply
`GND`	Power input	Supply
`CS`	Input	SPI chip select (CS)
`SCK`	Input	SPI clock (SCK)
`DO`	Output	SPI data into the MCU (MISO)
`TC+`	Passive	—
`TC-`	Passive	—

How to simulate the MAX31855 thermocouple in LabWired

Open the Playground at app.labwired.com and place an MCU board.
Add the MAX31855 thermocouple (catalog type max31855).
Connect VCC and GND to the supply and ground of the board.
Connect SCK and DO to the SPI pins of the board.
Connect CS to the chip-select pin of the board, or to a free GPIO.
Connect TC+ and TC- as your circuit needs.
Run the firmware. It selects the part and moves bytes over the simulated SPI bus as on hardware.

Related SPI devices

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Modelled from Analog Devices MAX31855 datasheet.

Wire it up in Playground → See the full validation matrix