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SPI device

ST7789 IPS TFT

The ST7789 IPS TFT is an SPI device in the LabWired part catalog. Its catalog type is st7789-170x320. It connects to the MCU over SPI. It has 8 pins. A registered peripheral model runs in the engine: the firmware talks to it over the real bus and gets device-accurate responses.

From the catalog: SPI pixels and D/C are simulated. RES hardware reset and BLK backlight GPIO/PWM are not simulated; visible pixels do not validate those connections.

Key facts

CategorySPI devices
Catalog typest7789-170x320
InterfaceSPI
Pins8
DatasheetSitronix ST7789V single-chip controller/driver for 262K-colour graphic TFT-LCD 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.

ST7789 IPS TFT pinout

PinElectrical typeFunction
GND Power input Supply
VCC Power input Supply
SCL Input SPI clock (SCK)
SDA Input SPI data out of the MCU (MOSI)
RES Input GPIO
DC Input GPIO
CS Input SPI chip select (CS)
BLK Input PWM

How to simulate the ST7789 IPS TFT in LabWired

  1. Open the Playground at app.labwired.com and place an MCU board.
  2. Add the ST7789 IPS TFT (catalog type st7789-170x320).
  3. Connect GND and VCC to the supply and ground of the board.
  4. Connect SCL and SDA to the SPI pins of the board.
  5. Connect CS to the chip-select pin of the board, or to a free GPIO.
  6. Connect BLK to a pin that can output PWM.
  7. Connect RES and DC to free GPIO pins.
  8. 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 Sitronix ST7789V single-chip controller/driver for 262K-colour graphic TFT-LCD datasheet.

Wire it up in Playground → See the full validation matrix