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Estardyn 1.69 Inch TFT Display OLED LCD

User Manual: 1.69 Inch Color TFT Display Module

Model: 1.69 Inch TFT Display OLED LCD

1. Introduction

This manual provides detailed instructions for the Estardyn 1.69 Inch Color TFT Display Module, a 240RGBX280 dot-matrix TFT LCD module. It is designed for integration into various electronic projects and devices, offering a vibrant and clear display solution. The module comprises a TFT LCD Panel, driver ICs, FPC (Flexible Printed Circuit), and a Backlight unit.

Estardyn 1.69 Inch Color TFT Display Module front view
Front view of the 1.69 inch TFT display module, showcasing its vibrant color capabilities.

2. Specifications

The following table details the key features and specifications of the 1.69 Inch TFT Display Module:

General description and features table for Estardyn 1.69 Inch TFT Display Module
Table detailing the general description and features of the display module.
FeatureValueUnit
LCD Size1.69inch
Display ModeNormally black-
Resolution240(H)RGB x280(V)pixels
Pixel pitch0.11655(H) x 0.11655(V)mm
Active area27.972(H) x 32.634(V)mm
Module size30.07(H) x 37.43(V) x1.56 (D)mm
Pixel arrangementRGB Vertical stripe-
Interface4 Line SPI-
Display Colors262Kcolors
Drive ICST7789V3-
Luminance(cd/m2)500 (TYP)Cd/m2
Viewing DirectionAll ViewBest image
Backlight3 White LED Parallel-
Operating Temp.-20°C ~ +70°C°C
Storage Temp.-30°C ~ +80°C°C
Weight3.4g

3. Pin Definition

The module uses an FPC connector. The following table defines each pin's symbol and description:

Pin definition table for Estardyn 1.69 Inch TFT Display Module
Table outlining the function of each pin on the FPC connector.
NO.SymbolDescription
1GNDPower Ground.
2LEDKLED Cathode
3LEDA+VDDPower Supply for Analog, VDD=2.5V-3.3V
4VDDIO_1.8Power Supply for I/O system. VDDIO1.8=1.65V-3.3V
5GNDPower Ground.
6GNDPower Ground.
7D/CDisplay data/command selection pin.
8CSChip selection pin. Low enable, high disable.
9SCLThis pin is used to be serial interface clock
10SDASPI interface input/output pin. The data is latched on the rising edge of the SCL signal.
11RESETThis signal will reset the device and it must be applied to properly initialize the chip. Signal is active low.
12TETearing effect signal is used to synchronize MCU to frame memory writing

4. Mechanical Dimensions

Refer to the mechanical drawings for precise dimensions and layout of the display module.

Mechanical drawing of Estardyn 1.69 Inch TFT Display Module with dimensions
Mechanical drawing showing the physical dimensions of the display module.
Detailed mechanical drawing of Estardyn 1.69 Inch TFT Display Module with notes
Detailed mechanical drawing providing precise dimensions and technical notes.

Key dimensions and notes from the drawings:

  • Display Type: 1.69" IPS TFT/Transmissive/Normally Black
  • Viewing Direction: All View
  • Driver IC: ST7789V3
  • Operating Temperature: -20°C ~ 70°C
  • Storage Temperature: -30°C ~ 80°C
  • Backlight: 3 Chip-White LED
  • LCM Luminance: 500 CD/M2 (TYP)
  • Unmarked Tolerance: ±0.2
  • Product complies with RoHS standard.

5. Setup and Wiring

This section provides guidance on how to connect and set up your 1.69 Inch TFT Display Module. Proper wiring is crucial for the module's functionality.

Wiring diagram for 1.69 inch TFT display module with ST7789 controller
Detailed wiring diagram for connecting the 1.69 inch TFT display module.

5.1 Power Supply

  • The module requires a +5V input, which is then regulated to +3.3V for the VDD supply.
  • Ensure stable power delivery to prevent display flickering or damage.
  • Connect GND pins to your system's ground.

5.2 SPI Interface Connection

The module uses a 4-line SPI interface. Connect the following pins to your microcontroller:

  • SCL (Serial Clock): Connect to your microcontroller's SPI clock output. Data is latched on the rising edge of this signal.
  • SDA (Serial Data): Connect to your microcontroller's SPI data input/output.
  • CS (Chip Select): Connect to a digital output pin on your microcontroller. This pin is active low (low enables the chip, high disables).
  • D/C (Data/Command): Connect to a digital output pin. This pin selects whether the data being sent is a command or display data.

5.3 Reset Pin

  • RESET: Connect to a digital output pin on your microcontroller. This pin is active low and must be toggled to properly initialize the chip upon power-up or for a software reset.

5.4 Backlight Control

  • LEDA+VDD: Power supply for the analog backlight circuit.
  • LEDK: LED Cathode.
  • The backlight consists of 3 parallel white LEDs. Ensure appropriate current limiting if not using the integrated backlight driver circuit shown in the diagram.

5.5 Initializing the Display

After wiring, the display requires initialization commands via the SPI interface. Refer to the ST7789V3 datasheet for the specific command sequence. Typically, this involves:

  1. Asserting the RESET pin (pulling low then high).
  2. Sending display ON/OFF commands.
  3. Setting display mode, color format, and other parameters.
  4. Sending image data.

6. Operating Instructions

Once the module is correctly wired and initialized, you can begin displaying graphics and text.

6.1 Displaying Graphics

To display an image, send pixel data to the display buffer via the SPI interface. The ST7789V3 controller supports 262K colors. Ensure your image data is formatted correctly (e.g., RGB565 or RGB666) according to the display's color depth setting.

6.2 Displaying Text

Text can be displayed by rendering character bitmaps onto the display. This typically involves:

  1. Defining a font (character bitmaps).
  2. Calculating the pixel positions for each character.
  3. Sending the corresponding pixel data to the display.

6.3 Refresh Rate and Tearing Effect

The TE (Tearing Effect) pin can be used to synchronize your MCU's frame memory writing with the display's refresh cycle, preventing visual tearing artifacts, especially during animations or fast updates.

7. Maintenance

To ensure the longevity and optimal performance of your TFT display module, follow these maintenance guidelines:

  • Cleaning: Use a soft, lint-free cloth slightly dampened with water or a specialized screen cleaner. Avoid harsh chemicals, abrasive materials, or excessive pressure.
  • Handling: Always handle the module by its edges. Avoid touching the display surface or the FPC connector directly to prevent damage from static electricity or oils.
  • Storage: Store the module within the specified storage temperature range (-30°C to +80°C) and in a dry environment, away from direct sunlight and extreme humidity.
  • Environmental Conditions: Operate the module within the specified operating temperature range (-20°C to +70°C). Avoid exposing it to rapid temperature changes or environments with high vibration.

8. Troubleshooting

If you encounter issues with your display module, refer to the following troubleshooting tips:

ProblemPossible CauseSolution
Display is blank/no image
  • Incorrect wiring (power, SPI, reset).
  • No power or insufficient power supply.
  • Display not initialized correctly.
  • Backlight not enabled.
  • Double-check all connections against the wiring diagram and pin definitions.
  • Verify power supply voltage (VDD 2.5V-3.3V, VDDIO 1.65V-3.3V).
  • Ensure the RESET pin is toggled and initialization commands are sent.
  • Check backlight connections (LEDA, LEDK) and ensure it's powered.
Flickering or unstable display
  • Unstable power supply.
  • Loose connections.
  • Incorrect SPI clock speed.
  • Use a stable power source. Add decoupling capacitors near the module if needed.
  • Secure all FPC and wire connections.
  • Adjust SPI clock speed to be within the controller's specifications.
Incorrect colors or distorted image
  • Incorrect color format setting.
  • Data corruption during SPI transmission.
  • D/C pin incorrectly toggled.
  • Verify the color format configured in the display controller matches your image data.
  • Check SPI communication for errors.
  • Ensure D/C pin is correctly set for command or data transmission.
Tearing artifacts on display
  • Display buffer updates are not synchronized with the display refresh.
  • Utilize the TE (Tearing Effect) pin to synchronize frame updates.
  • Implement double buffering in your software if possible.

9. User Tips

Here are some tips to enhance your experience with the Estardyn 1.69 Inch TFT Display Module:

  • Software Libraries: Consider using existing open-source libraries (e.g., Adafruit GFX library with ST7789 driver) for easier integration with popular microcontrollers like Arduino or ESP32.
  • Power Consumption: While the display is small, the backlight can consume significant power. If power efficiency is critical, consider implementing backlight dimming or turning it off when not needed.
  • FPC Connector Care: The Flexible Printed Circuit (FPC) connector is delicate. Ensure it is inserted correctly and securely into its receptacle to avoid intermittent connections or damage.
  • Testing: Before final integration, test the display with simple graphics and text to confirm basic functionality and correct wiring.

10. Warranty and Support

For technical support, driver code examples, or further inquiries regarding the Estardyn 1.69 Inch Color TFT Display Module, please contact your vendor or refer to the official product page. Keep your purchase records for any warranty claims.

This product complies with RoHS standards.