Model No. WG12864K
►Graphic LCD 128x64
►Type: Graphic
►Structure: COB
►Size: 2.93"
►IC: NT7107, NT7108
►+5V power supply
►1/64 duty cycle
►Built-in negative voltage
►Interface: 6800
►Touch Screen: Option
WG12864K is a COB (Chip on Board) structure monochrome 128x64 graphic LCD display module with an outline dimension of 113x53 mm and an active area of 66.52x33.24 mm (2.93-inch diagonal). The COB structure includes a PCB, making it easier for integration and mounting during system development.
This model is built with NT7107 and NT7108 controller ICs (or equivalents), supporting the 6800 8-bit parallel interface. It operates on a 5V power supply and features a built-in negative voltage circuit on the module.
WG12864K is available with or without LED backlight, and offers various backlight color options. Glass types include STN positive, STN negative, and FSTN, allowing flexibility for different visual and environmental requirements.
As part of Winstar’s 2.93-inch 128x64 STN graphic LCD lineup, WG12864K provides developers with a reliable display option for instrumentation, industrial control, and other applications. The module supports operation in temperatures from -20℃ to +70℃ and storage from -30℃ to +80℃.
| Item | Dimension | Unit |
|---|---|---|
| Number of dots | 128 x 64 | － |
| Module dimension | 113.0 x 53.0 x 13.6 (MAX) | mm |
| View area | 72.0 x 40.0 | mm |
| Active area | 66.52 x 33.24 | mm |
| Dot size | 0.48 x 0.48 | mm |
| Dot pitch | 0.52 x 0.52 | mm |
| Duty | 1/64 | |
| Backlight Type | LED | |
| IC | NT7107, NT7108 | |
| Interface | 68 series | |
| Item | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Operating Temperature | TOP | -20 | － | +70 | ℃ |
| Storage Temperature | TST | -30 | － | +80 | ℃ |
| Supply Voltage For Logic | VDD-VSS | -0.3 | － | 7.0 | V |
| Driver Supply Voltage | VLCD | VEE-0.3 | － | VDD+0.3 | V |
| Item | Symbol | Condition | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|---|
| Supply Voltage For Logic | VDD-VSS | － | 4.5 | 5.0 | 5.5 | V |
| Supply Voltage For LCD | VDD-VO | Ta=-20℃ Ta=25℃ Ta=70℃ |
－ 8.5 7.5 |
－ 8.75 － |
10.8 9.0 － |
V V V |
| Input High Volt. | VIH | － | 0.7VDD | － | VDD | V |
| Input Low Volt. | VIL | － | 0 | － | 0.8 | V |
| Output High Volt. | VOH | － | 2.4 | － | － | V |
| Output Low Volt. | VOL | － | － | － | 0.4 | V |
| Supply Current | IDD | VDD=5.0V | － | 8.28 | － | mA |
| Pin No. | Symbol | Level | Description |
|---|---|---|---|
| 1 | VSS | 0V | Ground |
| 2 | VDD | 5.0V | Supply voltage for logic |
| 3 | Vo | (Variable) | Operating voltage for LCD |
| 4 | D/I | H/L | H: Data , L : Instruction |
| 5 | R/W | H/L | H: Read (MPU←Module) , L: Write (MPU→Module) |
| 6 | E | H | Enable signal |
| 7 | DB0 | H/L | Data bus line |
| 8 | DB1 | H/L | Data bus line |
| 9 | DB2 | H/L | Data bus line |
| 10 | DB3 | H/L | Data bus line |
| 11 | DB4 | H/L | Data bus line |
| 12 | DB5 | H/L | Data bus line |
| 13 | DB6 | H/L | Data bus line |
| 14 | DB7 | H/L | Data bus line |
| 15 | CS1 | H | Select Column 1~ Column 64 |
| 16 | CS2 | H | Select Column 65~ Column 128 |
| 17 | /RES | L | Reset signal |
| 18 | Vout | － | Negative Voltage output |
| 19 | A | － | Power Supply for LED backlight ( + ) |
| 20 | K | － | Power Supply for LED backlight ( - ) |
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