Model No. WF28KTZAJDNG0
►Size: 2.8"
►Resolution: 240 x 320 dots
►View Direction: O-TFT (75/75/75/75)
►Interface: SPI
►Driver IC：ST7789V
►Control-Board: No
►Brightness(cd/m²): 350
►Frame Through Hole: No
►Touch Panel: Projected Capacitive Touch Panel (PCAP)
►Detect Point : 1 Finger
The WF28KTZAJDNG0 is a 2.8-inch TFT LCD display module with a projected capacitive (PCAP) touch panel, specifically designed for industrial applications. It features a resolution of 240 x 320 pixels in portrait orientation, making it ideal for compact, space-constrained devices. The module is equipped with the ST7789V driver IC for the TFT display, which supports an SPI interface, ensuring fast and reliable data communication.
The PCAP touch panel uses the CF1124 driver IC and supports an I2C interface. It offers 1-point touch detection, making it suitable for user interfaces that require simple and responsive touch interaction.
This display incorporates O-Film, which enhances its viewing angles to 75° in all directions (left, right, up, down), ensuring clear visibility from multiple perspectives. This makes it an excellent choice for applications where viewing from various angles is important.
This module is especially suitable for industrial applications such as portable medical monitors, where durability and long operational lifetimes are essential. With its robust design, the WF28KTZAJDNG0 is engineered to provide reliable performance for 5 to 6 years of continuous use.
| Item | Dimension | Unit |
|---|---|---|
| Size | 2.8 | inch |
| Dot Matrix | 240 × RGB × 320(TFT) | dots |
| Module dimension | 50.0(W) × 69.2(H) × 3.93(D) | mm |
| Active area | 43.2 × 57.6 | mm |
| Dot pitch | 0.18 × 0.18 | mm |
| LCD type | TFT, Normally White, Transmissive | |
| TFT Interface | SPI | |
| Driver IC | ST7789V or Equivalent | |
| View Angle | 75/75/75/75 | |
| Aspect Ratio | Portrait | |
| Backlight Type | LED, Normally White | |
| PCAP Driver IC | CF1124 or Equivalent | |
| PCAP Interface | I2C | |
| PCAP FW Version | 01 | |
| PCAP Resolution | 240*320 | |
| Touch Panel | Projected Capacitive Touch Panel (PCAP) | |
| Surface | Glare | |
| Item | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Operating Temperature | TOP | -20 | － | +70 | ℃ |
| Storage Temperature | TST | -30 | － | +80 | ℃ |
| Item | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage For Analog | VCC | 2.4 | 3.3 | 3.6 | V |
| Supply Current For LCM | ICC | － | 6.7 | 10.0 | mA |
| Supply Voltage For Touch Logic | VDDT | 3.0 | 3.3 | 3.6 | V |
| IDDT | － | 15 | 25 | V |
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| LED current | - | 80 | - | mA | |
| Power Consumption | 232 | 256 | 272 | mW | |
| LED voltage | VBL+ | 2.9 | 3.2 | 3.4 | V |
| LED Life Time | 50,000 | - | - | Hr |
| NO | Symbol | Function | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | GND | Ground | ||||||||||||||||||
| 2 | VLED+ | Anode of LED backlight. | ||||||||||||||||||
| 3 | VLED- | Cathode of LED backlight. | ||||||||||||||||||
| 4 | GND | Ground | ||||||||||||||||||
| 5 | VCC | Power supply | ||||||||||||||||||
| 6 | RESET | System reset pin. (RESX) signal is active low |
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| 7 | SDA | When IM3: Low, SPI interface input/output pin. When IM3: High, SPI interface input pin. The data is latched on the rising edge of the SCL signal. If not used, please fix this pin at VDDI or DGND level. |
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| 8 | DCX(SCL) | This pin is used to be serial interface clock. DCX=’1’: display data or parameter. DCX=’0’: command data. If not used, please fix this pin at VDDI or DGND. |
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| 9 | CSX | Chip selection pin Low enable. High disable. |
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| 10 | WRX(D/CX) | Display data/command selection pin in 4-line serial interface. Second Data lane in 2 data lane serial interface. If not used, please fix this pin at VDDI or DGND. |
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| 11 | GND | Ground | ||||||||||||||||||
| 12 | SDO(DOUT) | SPI interface output pin. The data is output on the falling edge of the SCL signal. If not used, let this pin open. |
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| 13 | TE | Tearing effect signal is used to synchronize MCU to frame memory writing. If not used, please let this pin open |
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| 14 | IM3 | The MCU interface mode select.
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| 15 | GND | Ground | ||||||||||||||||||
| 16-19 | NC | No connect | ||||||||||||||||||
| 20 | GND | Ground |
| Pin | Symbol | Function |
|---|---|---|
| 1 | VSS | Ground for analog circuit |
| 2 | VDDT | Power Supply : +3.3V |
| 3 | SCL | I2C clock input |
| 4 | NC | No connect |
| 5 | SDA | I2C data input and output |
| 6 | NC | No connect |
| 7 | /RST | External Reset, Low is active |
| 8 | NC | No connect |
| 9 | /INT | External interrupt to the host |
| 10 | VSS | Ground for analog circuit |
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