3.9" 480x128 Top View Direction Stretched PCAP TFT LCD Display
Model No. WF39CTIASDNG0
►Size : 3.9"
►Resolution : 480×128 dots
►View Direction : 12H
►Interface : RGB
►Driver IC: HX8278-A
►Control-Board : No
►Brightness(cd/m²) : 400
►Frame Through Hole : No
►Touch Screen : Projected capacitive touch panel (PCAP)
►Detect Point : 5 Fingers
Description
WF39CTIASDNG0 is a 3.9 inch Top View Bar TFT module with Projected Capacitive Touch Panel (PCAP) which featured with 480x128 dots resolution. WF39CTIASDNG0 is built in with Driver IC HX8278-A, it communicates via 24-bit RGB interface, 3.3V (typical) power supply voltage, supports SYNC mode or DE mode, default SYNC mode. Its brightness is 400 nits; contrast ratio of 500, view direction 12 o'clock (top view direction), gray scale inversion direction 6 o'clock, and glare surface glass. It can be operating at temperatures from -20℃ to +70℃, its storage temperatures range from -30℃ to +80℃.
We also offer Resistive Touch Panels (RTP) and High Brightness version optional for WF39C model. WF39C is top-view direction TFT module, if customers require bottom-view (6 o'clock), please choose WF39B series Bar TFT model.
DRAWING
SPECIFICATIONS
Interface
LCM PIN Definition
| No. | Symbol | Description |
|---|---|---|
| 1 | VLED- | Backlight LED Cathode |
| 2 | VLED+ | Backlight LED Anode. |
| 3 | GND | System Ground |
| 4 | VCC | Power supply for logic operation |
| 5~12 | R0~R7 | Data bus |
| 13~20 | G0~G7 | Data bus |
| 21~28 | B0~B7 | Data bus |
| 29 | GND | System Ground |
| 30 | DCLK | Pixel clock signal |
| 31 | DISP | Display on/off control |
| 32 | HSYNC | Horizontal Sync signal |
| 33 | VSYNC | Vrtical Sync signal |
| 34 | NC | No connection (Option DE) |
| 35 | NC | No connection |
| 36 | GND | System Ground |
| 37 | NC | No connection |
| 38 | NC | No connection |
| 39 | NC | No connection |
| 40 | NC | No connection |
PCAP PIN Definition
| Pin | Symbol | Function |
|---|---|---|
| 1 | VSS | Ground for analog circuit |
| 2 | VDDT | Power Supply : +3.0V |
| 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 |
General Specifications
| Item | Dimension | Unit |
|---|---|---|
| Size | 3.9 | inch |
| Dot Matrix | 480 ×128 × RGB (TFT) | dots |
| Module dimension | 105.5(W) × 37.0(H) × 5.2(D) | mm |
| Active area | 95.04 × 25.34 | mm |
| Dot pitch | 0.066(W) × 0.198(H) | mm |
| LCD type | TFT, Normally White, Transmissive | |
| View Direction | 12 o'clock | |
| Gray Scale Inversion Direction | 6 o'clock | |
| Aspect Ratio | Bar Type | |
| Driver IC | HX8278-A or equivalent | |
| TFT Interface | RGB-24BIT | |
| Backlight Type | LED, Normally White | |
| CTP IC | CYTM568 or equivalent | |
| CTP FW Version | 0x0001 | |
| Touch Screen | Projected capacitive touch panel (PCAP) | |
| Surface | Glare | |
Absolute Maximum Ratings
| Item | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Operating Temperature | TOP | -20 | － | +70 | ℃ |
| Storage Temperature | TST | -30 | － | +80 | ℃ |
Electrical Characteristics
Operating conditions
| Item | Symbol | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Supply Voltage For LCM | VCC | - | 3.0 | 3.3 | 3.6 | V |
| Supply Current For LCM | ICC | - | - | 15 | 25 | mA |
| Supply Voltage For Touch Logic | VDDT | - | 2.8 | 3.5 | mA |
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