Model No. WH2002A
►Character LCD display 20x2
►Type: Character
►Structure : COB
►Size: 2.93 inch
►20 characters x 2 Lines
►5x8 dots includes cursor
►+5V power supply (Also available for +3V)
►Negative voltage option is only for the +3V power supply
►1/16 duty cycle
►LED can be driven by PIN1, PIN2, PIN15, PIN16 or A and K
►Interface: 6800 (ST7066 IC), option SPI/I2C (RW1063 IC)
WH2002A is a 2.93-inch 20x2 character LCD module with 20 characters per line across 2 lines. The module uses a COB (Chip on Board) structure and integrates an ST7066 LCD controller. The default configuration supports a 6800 4/8-bit parallel interface, while SPI and I2C versions are available with the RW1063 controller.
The module measures 116.0 x 37.0 x 13.9 mm, with a viewing area (VA) of 85.0 x 18.6 mm and an active area (AA) of 73.5 x 11.5 mm. The default logic supply voltage is 5V, with a 3V version also available. Negative voltage operation is supported only with the 3V configuration. The operating temperature range is -20°C to +70°C, and the storage temperature range is -30°C to +80°C.
The WH2002A series is available with multiple LCD display modes, including positive gray, positive yellow-green, negative blue, and positive or negative FSTN options. LED backlight options include yellow-green, blue, green, white, amber, red, and RGB.
Versions using the ST7066 controller are available with multiple character font sets, including English/Japanese, Western European, Eastern European, Scandinavian European, Cyrillic (Russian), and Hebrew/Arabic, allowing the font set to be selected according to the required display content.
WH2002A uses a 16-pin connection by default. The 6800 interface includes RS, R/W, E, and DB0–DB7 signal lines, with the backlight power connected through the A/K pins.
| Item | Dimension | Unit |
|---|---|---|
| Number of Characters | 20 Characters x 2 Lines | － |
| Module dimension | 116.0 x 37.0 x 13.9 (MAX) | mm |
| View area | 85.0 x 18.6 | mm |
| Active area | 73.5 x 11.5 | mm |
| Dot size | 0.60 x 0.65 | mm |
| Dot pitch | 0.65 x 0.70 | mm |
| Character size | 3.20 x 5.55 | mm |
| Character pitch | 3.70 x 5.95 | mm |
| Duty | 1/16 | |
| Backlight Type | LED | |
| IC | ST7066U | |
| Interface | 6800 | |
| Item | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Operating Temperature | TOP | -20 | － | +70 | ℃ |
| Storage Temperature | TST | -30 | － | +80 | ℃ |
| Input Voltage | VI | VSS | － | VDD | V |
| Supply Voltage For Logic | VDD-VSS | -0.3 | － | 7 | V |
| Supply Voltage For LCD | VDD-Vo | -0.3 | － | 13 | 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-V0 | Ta=-20℃ Ta=25℃ Ta=70℃ |
－ 4.2 3.8 |
－ 4.35 － |
5.7 4.5 － |
V V V |
| Input High Volt. | VIH | － | 0.7 VDD | － | VDD | V |
| Input Low Volt. | VIL | － | Vss | － | 0.6 | V |
| Output High Volt. | VOH | － | 3.9 | － | VDD | V |
| Output Low Volt. | VOL | － | 0 | － | 0.4 | V |
| Supply Current | IDD | VDD=5.0V | 1.0 | 1.2 | 1.5 | 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 | RS | H/L | H: DATA, L: Instruction code |
| 5 | R/W | H/L | H: Read L: Write |
| 6 | E | H,H→L | Chip 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 | A | － | Power supply for B/L + |
| 16 | K | － | Power supply for B/L - |
By clicking "Allow All Cookies", you agree to the storing of cookies on your device to enhance site navigation, analyse site usage, and assist in our marketing and performance efforts. You can find further information this subject in our policy.
